vm-5 series monitor model vm-5c eccentricity

Transcription

MANUAL NO. 29603E4.0
Published in Jun.1996
Revised in Aug. 2009
VM-5 SERIES MONITOR
MODEL VM-5C ECCENTRICITY MONITOR
INSTRUCTION MANUAL
SAFETY CONVENTIONS
VM-5C
For safe operation.....
Thank you for using our VM-5 Series Monitor. SHINKAWA Sensor Technology applies strict quality control
and inspections to ensure the high reliability of its products.
This instruction manual contains descriptive information, specifications, and operating, setting, and adjusting
procedures.
Please study the contents of this manual and related manuals thoroughly before installing or operating the
equipment, and keep it handy for future reference.
"Safety Conventions"
Please thoroughly study the following section entitled "Safety Conventions" before operating the
equipment.
The safety symbols explained in this section are placed outside the left margin next to the text to which they
apply.
This unit is designed for use by specialists or persons thoroughly familiar with the field.
Make sure that the end user receives the Instruction Manual delivered with this unit.
Before use.....
When the unit is received, inspect it for damage suffered in transport and check
whether it is the item you ordered. In the unlikely event that it was damaged in transport
or does not function according to specifications, please contact the SHINKAWA Office
or dealer nearest you.
Store the unit under the ambient conditions given in the specification.
Avoid places where it is exposed to high humidity or corrosive gases.
i
SAFETY CONVENTIONS
VM-5C
Make it a rule to follow the instructions given in this manual.
This manual contains important information designed to prevent personal injury and property damage, and
ensure safe operation of the equipment.
Familiarize yourself with the signs and symbols explained below before proceeding to read the manual, and
observe the instructions given.
■ Explanation of signs
Symbols
Explanation
Indicates a potentially hazardous situation which, if not avoided, could result in death
WARNING or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to permit for property-damage-only accidents.
◊ "Serious injury" refers to such injuries as loss of eyesight, injuries, burns (due to heat or cold), electric
shock, fractures, and poisoning, that have permanent aftereffects and require hospitalization or long-term
outpatient treatment.
◊ "Moderate or minor injury" refers to such injuries as burns and electric shock that do not require
hospitalization or long-term outpatient treatment.
"Property-damage-only accidents" refers to
consequential damage related to destruction of property and damage to the equipment.
■ Explanation of symbols
Symbols
Explanation
Indicates a prohibited action.
Details are given in the text next to the symbol.
Indicates a mandatory action.
Details are given in the text next to the symbol.
ii
SAFETY CONVENTIONS
VM-5C
To ensure safe use of this equipment, strictly observe the safety precautions provided in this manual, as well
as installation methods and methods of use stipulated by laws and regulations. SHINKAWA Sensor
Technology will not be liable for damage, etc. due to methods of use contravening to the instructions provided
here.
■ Safe use
WARNING
Make sure to ground.
May cause electric shock or malfunction.
Connect earth wire
Make sure to turn the power off before any wiring work.
PROHIBITION
Will cause electric shock.
CAUTION
Connect the input signal within the voltage range described in the
specification to the input terminals.
MANDATORY
Will cause damage and malfunction of the instrument.
Install the monitor unit and its relay module unit in the same location in the
instrument rack.
MANDATORY
MANDATORY
Will cause damage to the instrument and malfunction of the turbine monitoring system.
A printed circuit board and electronic products may receive damage with
the static electricity of a human body.
Touch the metal part once and discharge your static electricity before
dealing with it.
Do not touch parts and soldered surfaces of the monitor unit.
PROHIBITION
The monitor unit is a precision instrument.
Take care not to expose it to excessive shock or vibration.
PROHIBITION
Do not change the parameter settings during operation.
May cause unexpected alarm output.
PROHIBITION
Do not pull out the face plate during operation.
Will cause damage to the instrument and malfunction of the turbine monitoring system.
PROHIBITION
PROHIBITION
Do not measure insulation resistance and dielectric strength other than
those at places specified.
Will cause damage to the instrument.
Do not remodel this monitor unit without permission.
Otherwise the guarantee can not be made.
PROHIBITION
iii
SAFETY CONVENTIONS
VM-5C
■ EMC(Electro-magnetic compatibility)
The EMC of each VM-5 Series monitor is evaluated by various noise tests.
However, its characteristics may vary with on environmental conditions such as the magnitude of noise,
ambient temperature, humidity and the arrangement of equipment.
For the above reason, when operating the monitor, please observe the following CAUTION.
CAUTION
MANDATORY
MANDATORY
MANDATORY
MANDATORY
The monitor unit should be operated by specialists or personnel who have
knowledge of it.
When a shielded cable is used, the length of the unshielded cable section
should be less than 100mm.
For each relay used near this monitor unit, devices related to this monitor
unit or signal cables connecting the monitor unit and these devices, install
a surge killer.
Firmly tighten each screw used for mounting each unit. In additional,
always close the face plate for the monitor unit, then fix it with knurled
screws.
In order to prevent the system from its malfunction when the monitor unit
fails, provide the systematic interlock function.
MANDATORY
PROHIBITION
Do not wire input signal cables in parallel with control and power cables.
It is recommended that separated wire ducts be used for these cables.
Do not use any radio equipment near the monitor unit.
PROHIBITION
■ Noise filter
Noise transmitted through in each cable may be rejected to some extent by inserting a ferrite core in the cable
(note 1).
If the cable passes through noisy surroundings, it is recommended that such a noise prevention device is used.
(note 1)
ZCAT3050-1330
:
TDK
iv
TABLE OF CONTENTS
VM-5C
1. GENERAL INFORMATION
---------------------------------------------------------------------------------------------------
1
2. SPECIFICATIONS
---------------------------------------------------------------------------------------------------
2
3. OUTLINE DRAWING
---------------------------------------------------------------------------------------------------
4
4. INTERCONNECTION
4-1
INTRINSIC SAFETY EXPLOSION-PROOF CONSTRUCTION
----------------
4-2
NON-INTRINSIC SAFETY EXPLOSION-PROOF CONSTRUCTION
6
--------- 10
5. DESCRIPTION OF FUNCTIONS
5-1
DISPLAY
-------------------------------------------------------------------------------------- 14
5-2
ALARM FUNCTIONS
5-3
DANGER(DAN)ALARM
5-4
ALERT(ALE)ALARM
5-5
OK(INPUT ABNORMAL)ALARM
5-6
ZERO SHIFT FUNCTION
5-7
ALARM DELAY FUNCTION
5-8
FIRSTOUT DISPLAY
----------------------------------------------------------------------- 15
5-9
BYPASS FUNCTION
----------------------------------------------------------------------- 15
---------------------------------------------------------------------- 14
-------------------------------------------------------------------- 14
----------------------------------------------------------------------- 14
-------------------------------------------------------- 14
----------------------------------------------------------------- 14
5-10 POWER ON TIMER MODE
-------------------------------------------------------------- 14
-------------------------------------------------------------- 15
5-11 ALARM RELAY MODE
-------------------------------------------------------------------- 16
5-12 ALARM RESET MODE
-------------------------------------------------------------------- 16
5-13 MONITOR OUTPUT / PULSE OUTPUT
5-14 RECORDER OUTPUT
--------------------------------------------------------------------- 16
5-15 SELF-DIAGNOSTIC FUNCTION
5-16 POWER SEQUENCE
------------------------------------------------------- 16
---------------------------------------------------------------------- 17
5-17 TIMED OK CHANNEL DEFEAT
5-18 TRIGGER FUNCTION
---------------------------------------------- 16
--------------------------------------------------------- 17
--------------------------------------------------------------------- 17
5-19 SUPPRESSION FUNCTION
------------------------------------------------------------- 17
6. DESCRIPTION OF PARTS
6-1
DESCRIPTION OF FRONT PANEL/SIDE VIEW
6-2
DESCRIPTION OF PARTS
6-3
DESCRIPTION OF LCD DISPLAY
----------------------------------- 18
--------------------------------------------------------------- 19
v
----------------------------------------------------- 20
TABLE OF CONTENTS
VM-5C
7. PARAMETER SETTING
7-1
WITHDRAWAL OF FACE PLATE
------------------------------------------------------ 21
7-2
BASIC KEY OPERATIONS
7-3
DIP SWITCH SETTING
7-4
PARAMETER SETTING 1
---------------------------------------------------------------- 26
7-5
PARAMETER SETTING 2
---------------------------------------------------------------- 35
7-6
TRIGGER LEVEL AND HYSTERESIS
7-7
GEAR TOOTH FORM SUITABLE FOR DETECTION
7-8
TRIGGER MODE SELECTION
7-9
SETTING PROCEDURE FOR MANUAL TRIGGER
--------------------------------------------------------------- 23
------------------------------------------------------------------- 25
------------------------------- 48
------------------------------------------------- 49
------------------------------------------------------------------ 50
7-12 MONITOR OUTPUT / PULSE OUTPUT SELECTION
7-13 ADJUSTMENT OF ZERO SHIFT
8.
----------------------------- 45
---------------------------------------------------------- 47
7-10 DETERMINATION OF HYSTERESIS
7-11 HYSTERESIS SETTING
------------------------------------------------ 43
---------------------------- 51
------------------------------------------------------- 52
FUNCTIONAL DIAGRAM
8-1
BLOCK DIAGRAM
-------------------------------------------------------------------------- 53
8-2
FUNCTIONAL BLOCK DIAGRAM
------------------------------------------------------ 54
9. MAINTENANCE
9-1
RECOMMENDED MAINTENANCE EQUIPMENT
--------------------------------- 56
9-2
VERIFICATION OF OK(INPUT ABNORMAL ALARM) OPERATION
9-3
VERIFICATION OF DANGER(DAN)/
ALERT(ALE)ALARM OPERATION
----------- 60
9-4
VERIFICATION OF MEASURED VALUE AND RECORDER OUTPUT
9-5
ADJUSTMENT OF MEASURED VALUE AND
RECORDER OUTPUT ZERO SPAN
10.
--------- 57
------ 63
---------- 65
9-6
REPLACEMENT OF ALUMINUM ELECTROLYTIC CAPACITOR
------------ 68
9-7
REPLACEMENT OF LCD UNIT
9-8
LCD CONTRAST ADJUSTMENT
------------------------------------------------------- 70
9-9
LCD BACKLIGHT ADJUSTMENT
------------------------------------------------------ 71
--------------------------------------------------------- 69
TROUBLESHOOTING
10-1 LCD DISPLAY CONTENT ABNORMAL
10-2 OK DISPLAY FLASHES
---------------------------------------------- 72
------------------------------------------------------------------- 73
10-3 MEASURED VALUE ABNORMAL
------------------------------------------------------ 74
10-4 OK(INPUT ABNORMAL ALARM)DOES NOT OPERATE
10-5 ALERT(ALE)ALARM DOES NOT OPERATE
------------------------ 75
--------------------------------------- 75
10-6 DANGER(DAN)ALARM DOES NOT OPERATE
------------------------------------ 76
10-7 ERRORNEOUS OPERATION OF DANGER(DAN)/
ALERT(ALE)ALARM
10-8 NO RECORDER OUTPUT
---------- 76
--------------------------------------------------------------- 77
vi
1.
GENERAL INFORMATION
VM-5C
OVERVIEW
This is a highly reliable monitor which monitors the amount of shaft deflection (eccentricity pk-pk)
at machine start-up.
Both a 10-slot rack mounting type and a single-unit independent type with a built-in power supply
are available so that it can respond flexibly to any system design from medium and small scale
rotating machinery to TSI. The monitor inputs eccentricity pk-pk signals from the VK Series
Vibration Transducers and phase-marker phase reference signals to measure the peak value of
eccentricity per revolution and displays them on LCD. It can also set ALERT and DANGER alarm
levels independently to detect machine failures early on and inform the operator of abnormal
conditions such as contact due to excessive shaft deflection, etc.
It has a built-in self-diagnostic function to inform the operator of input transducer failures, thereby
preventing rotating machinery from false shutdowns.
FEATURES
•
Conforms to API St’d 670
•
Auto Zero Shift function automatically shifts the zero point in response to rotor
displacement.
•
The monitor is available as a single unit independent type or a rack mounting type.
•
Has a self-diagnostic function.
•
Allows the operator to change each setting even in the field.
•
Important information such as measured value, alarm set value and gap voltage is normally
displayed.
•
Can isolate recorder output (option).
•
LED display / contact output (DANGER / ALERT alarm).
•
LED display / contact output (Input abnormal alarm).
•
For alarm output wiring proceed as described in the instruction manuals for the
VM-5G Single Unit Instrument Rack and VM-5Y Relay Module Unit used in
Mandatory
combination with this monitor unit.
•
Caution
If megger test is made on the signal cable between transducer and monitor,
disconnect the cable from transducer and monitor.
Be sure to discharge the charged electric load before connecting the cable to the
transducer and monitor.
If this caution is not adhered to, the transducer and monitor could be damaged.
-1-
2.
SPECIFICATIONS
VM-5C
Model Code / Additional Spec. Code(
No entry if additional
spec. code is not specified.
)
VM-5CMonitor range
pk-pk
1
2
3
4
5
6
7
8
A
B
Note)
Monitor range
direct
Input signal
(Rotor pulse:CH1)
Input signal
(Ecc:CH2)
0 to 100µ m pk-pk
-50 to 0 to +50µ m
1
VK-202A,VK-202P *1
1 VK-202A,VK-202P,FK-202F
0 to 200µ m pk-pk -100 to 0 to +100µ m 2
RD,FK Series
2
VK-302P
MS Series
0 to 250µ m pk-pk -125 to 0 to +125µ m 3
3
VK-452A,FK-452F
4 or more pulses per
0 to 500µ m pk-pk -250 to 0 to +250µ m
4
VK-602P
revolution with even duty
0 to 1000µ m pk-pk -500 to 0 to +500µ m
5
VC Series
0 to 5mils pk-pk
-2.5 to 0 to +2.5mils
Note) *2 VK Direct eccentricity polarity
0 to 10mils pk-pk
-5 to 0 to +5mils
Indication and rec. output
0 to 20mils pk-pk
-10 to 0 to +10mils
Polarity
Toward sensor
Away from sensor
0 to 30mils pk-pk
-15 to 0 to +15mils
Direct
Increase
Decrease
0 to 50mils pk-pk
-25 to 0 to +25mils
Reverse
Decrease
Increase
*1 VK transducer can not detect the wire break in the
sensor system, so RD tacho driver which can detect
the wire break shall be recommended.
-
-
-
Direct
Eccentricity
Measurement range *3
polarity *2
1
Direct
1
1 to approx.300rpm
2 Reverse 2
1 to approx.600rpm
Note) *3 The measurement range for
direct eccentricity is
less than 12rpm.
VC Direct eccentricity polarity
Polarity
Direct
Reverse
Recorder
output
0
1
2
Indication and rec. output
Toward sensor
Away from sensor
Decrease
Increase
Increase
Decrease
-
Hysteresis set value
Alarm reset
Alarm reset
Alarm reset
Relay mode
Relay mode
Relay mode
First out
(shaped waveform circuit)
(DANGER)
(ALERT)
(OK)
(DANGER)
(ALERT)
(OK)
*4
NORMALLY
0
NORMALLY
0
NORMALLY
0
1.0V
0 AUTO-RESET 0 AUTO-RESET 0 AUTO-RESET 0
0 OFF
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED 1 ON
1
0.1V
1 SELF-HOLD 1 SELF-HOLD 1 SELF-HOLD
1
NORMALLY
1
NORMALLY
1
NORMALLY
2
0.2V
ENERGIZED
ENERGIZED
ENERGIZED
3
0.5V
/(IS
or RE
)/5G
/TRP/EX
4 to 20mADC
1 to 5VDC
Output card
/IS or /RE
option
Phase marker
input
0 CH1(VM-5C)
1 CH1(VM-5P)
/CEM
Input power supply
Tropical
Sensitivity
Recorder option
Isolate output
CE marking
output
requirements
spec.
correction
0
4 to 20mADC
2
0 to -10VDC
0
85 to 264VAC
1
TIIS(IEC)
1
1 to 5VDC
3
0 to 10VDC
1
24VDC
2
FM
2
0 to -10VDC
4
0 to -5VDC
2
110VDC
4
CSA
3
0 to 10VDC
5
0 to 5VDC
5
ATEX
Note) *4 It is necessary to set all monitor units in the same rack in first out function ON when it is used first
4
0 to -5VDC
out function.
5
0 to 5VDC
When recorder output code 2 is selected, Note) Input abnormal alarm is not applicable in case of VC input signal.
specify this option code.
Short circuit is not detectable in case of MS input signal.
Ordering Information
ALARM SET VALUE
Standard Specifications
ALARM OUTPUT
DANGER1
:
ALERT1
:
H-DANGER2 :
H-ALERT2
:
L-ALERT2
:
L-DANGER2 :
DANGER1,ALERT1 : For eccentricity pk-pk
DANGER2,ALERT2 : For direct
Unless specified otherwise, preset to :
DANGER1
:
100% of monitor range
ALERT1
:
90% of monitor range
H-DANGER2 :
Invalid
H-ALERT2
:
Invalid
L-ALERT2
:
Invalid
L-DANGER2 :
Invalid
pulse(1 to 120 pulse)
Preset to 1 pulse unless specified otherwise.
INPUT PULSE/1RPM
DIMENSION OF TARGET
(Model VK,RD,FK)
BA
D
A
D
C
MEASURED VALUE
ALAMR INDICATOR
ABNOR. ALAMR
INDICATOR
BYPASS INDICATOR
TRANSDUCER INPUT
B
D
C
C
Note) To detect a projection (gear), provide surface A of the projection with a concentric curve.
VK-202A
Do not make it flat.
Input RD-05A VK-452A
VK-302P
FK-202F FK-452F
A=
B=
C=
D=
mm
mm
mm
mm
Dimension of
target
[recommended](mm)
Set gap
[recommended](mm)
SUPPRESSION
FUNCTION SET VALUE
A
B
C
D
≥6
≥7
≥ 2.5
≥16
1.0 to 1.5
≥16
≥20
≥ 4.5
≥36
2.5 to 3.5
≥8
≥8
≥ 2.5
≥20
1.0 to 1.5
:
0.0 to 10.0 % of monitor range (0.1 % step)
Preset to 2.0 % unless specified otherwise.
CAUTION : When the measurement value is not more than
suppression function set value, indication and recorder
output value shall be as 0 %.
Standard Specifications
ALARM SET POINT
ALARM SET RANGE
ALARM SET ACCURACY
ALARM SET
REPEATABILITY
Others
Eccentricity pk-pk : 2 points (DANGER1,AELRT1)
Direct : 4 points (H-DANGER2,H-ALERT2,L-ALERT2,L-DANGER2)
0 to 110% of monitor range (eccentricity p-pk)
-10 to +110% of monitor range (direct)
±1.0% of F.S. or less
±0.1% of F.S. or less
INPUT IMPEDANCE
TRIGGER MODE
EXTERNAL CONTACT
INPUT
(FROM REAR PANEL)
BAR GRAPH METER
ZERO SHIFT
DIGITAL METER
RECORDER OUTPUT
CONVERSION
ACCURACY
LOOP ACCURACY FOR
MONITOR+SENSOR
(if calibrated as a loop)
RECORDER OUTPUT
(FROM REAR PANEL)
MONITOR/PULSE
OUTPUT
(FROM FRONT,REAR
PANEL)
TEMPERATURE RANGE
MATERIAL AND FINISH
MASS
-2-
5 points (DANGER1,ALERT1,DANGER2,ALERT2,OK) or
6 points (DANGER1,ALERT1,DANGER2,ALERT2,OK1,OK2)
(H,L are OR output)
LCD digital meter with 5 digits
(7 segments,with back light)
LCD bar graph meter
(40 segments,with back light)
* Measurement value and alarm set value are indicated on the
digital meter and bar graph meter simultaneously.
DANGER :
(red LED)
ALERT
:
(yellow LED)
OK
:
(green LED)
BYPASS :
(red LED)
VK-202A,VK-202P,FK-202F,VK-302P(only eccentricity),
VK-452A,FK-452F,VK-602P(only eccentricity),
VC Series(only eccentricity)
RD-05A(only phase marker),MS Series(only phase marker)
Number of input points : 2 points(phase marker,eccentricity)
Approx.50kΩ
AUTO, MANUAL (selectable) (prior to shipment, MANUAL)
In case of auto trigger mode, input pulse duty ratio should be between
10 and 90% and input pulse frequency should be 1Hz and over.
Contact type : Dry contact
Contact for external reset
Recorder output conversion accuracy
0 to 100% of monitor range
Recorder output conversion accuracy
± 1.0% of F.S. at 25°C
± 2.0% of F.S. at 0 to 65°C
± 2.5% of F.S.
± 1.0% of F.S.
± 5% of F.S. or less
Voltage or current output proportional to monitor range
1 to 5VDC (output impedance : 250Ω)
4 to 20mADC (max. load resistance : 500Ω)
0 to -10VDC*,0 to 10VDC*,0 to -5VDC*,0 to 5VDC*
(output impedance : 100Ω) (*option)
Number of output points : 2 points(eccentricity pk-pk,direct)
Monitor output/Pulse output, selectable
(preset to CH1 : Pulse output, CH2 : Monitor output)
Monitor output : Input signal is output via a buffer amplifier.
Signal level : -0.8 to -22VDC (VK,RD),± 15V (MS),
0 to 5VDC(VC)
Pulse output
: Shaped pulse signal is output via a buffer
amplifier.
Signal level : -1 to +1V(PL),4 to 6V(PH)
Output impedance : Approx.100Ω (load resistance 50kΩ or more)
Operating temperature
: 0 to 65°C (32 to 149°F REF.)
Storage temperature
: -30 to +85°C (-22 to +185°F REF.)
Relative humidity
: 20 to 95%RH (noncondensing)
Face plate :
Aluminum Munsell N-4.0 (equiv.)
Monitor : max.0.7kg
(including single unit instrument rack : max.2.5kg)
39505E4.7
2.
SPECIFICATIONS
* Direct eccentricity polarity
Relationship between
direct eccentricity and sensor
VM-5C
Polarity
Toward Sensor
Display, Recorder output
LCD display
Output
Recorder output
Increment
Direct
Sensor
Time
LCD display
Output
Recorder output
Decrement
Reverse
Time
Away from Sensor
LCD display
Output
Recorder output
Decrement
Direct
Sensor
Time
LCD display
Reverse
Output
Recorder output
Increment
Time
•
Mandatory
After having mounted and adjusted the sensor, make sure to check the polarity of the
monitor display by moving the rotor, inserting a thin metal plate or the like between
sensor and target.
-3-
3.
OUTLINE DRAWING
VM-5C
No.
Name
No.
Name
1
LCD display
8
Tag, Ser.No. plate
2
DANGER lamp
9
LCD board
3
ALERT lamp
10
Slide frame
4
OK lamp
11
Main board frame
5
BYPASS lamp
12
Main board
6
Monitor output connector
13
DIN connector (64pin)
7
Name plate
---
Finish
Face plate : Munsell N-4.0 (equiv.)
Mass
Max. 0.7kg (Max. 1.6lb REF.)
Unless otherwise specified, units are in millimeters (mm) and grams (g).
Reference dimensions in parentheses are in inches (in) and pounds (lb)
-4-
----------
4.
INTERCONNECTION
•
VM-5C
Do not use the blank terminals.
Prohibition
INTERCONNECTION OF TRANSMISSION CABLE
Connection of signal transmission cable
•
Mandatory
For interconnection between the VK driver and the monitor, or between the VK
driver and safety barrier, and safety barrier and monitor, make sure to use 3-core
shielded cables or pair shielded standard 3-wire instrument cables, since the signal
transmitted is weak.
(Do not use unshielded cables or non-pair shielded multicore cables as the
measured values could be affected by external noise.)
Recommended cables
Cable
Recommended
CVVS
(3-core shielded cable)
Recommended cabling as
per API st’d 670
Normal:
Silver-plated braid
Conduit pipe
Excellent
Shielded wire
Conduit pipe
Outside shielded
Good
Shielded wire
Mandatory
Recommended:
Copper tape shielded
(Core wire: Soft copper wire)
Use conduit pipe (cable rack) for
wiring.
INSTRUMENT CABLE
(Pair shielded standard 3-wire)
•
Note
Although vibration and displacement
signals can be transmitted in one
instrument cable, use separate
cables, because a high vibration
signal exerts injurious influence over
other displacement and vibration
signals.
Recommended:
Outside shield of aluminum or
copper tape.
Provide separate cabling for pulse signals (phase marker, revolution) and for
displacement and vibration signals.
•
Avoid running signal transmission cables together with control and power cables.
•
Install all cables in conduit pipes or on cable racks.
-5-
4.
INTERCONNECTION
VM-5C
4-1 INTRINSIC SAFETY EXPLOSION-PROOF CONSTRUCTION
4-1-1 MODEL VK AND VM-5G OR VM-5Y1,2,3
VK-202A input : TIIS Ex ia IIC T6
Safety Barrier Terminals
Signal name
Wire no.
Monitor Terminals
Hazardous area
Safe area
No.
No.
Terminal name
1ch
No.
Terminal name
2ch
No.
Output
A
4
2
IN
A1
IN
B1
Common, Shield
B, D
Earth
Earth
COM
A2
COM
B2
Power
C
3
1
PWR
A3
PWR
B3
-6-
4.
INTERCONNECTION
•
VM-5C
Be sure to observe the following cautions at the time of interconnection.
Mandantory
Note No.
in drawing
Caution
Use flexible armored cables as sensor cables and extension cables, unless these
cables are not at risk for damage.
Allowable bending radius
Without armor : 30 mm (1.18 in REF.)
With armor :
50 mm (1.97 in REF.)
Allowable tension : 98.1N (10 kgf REF.)
1)
2)
To insulate the connector, cover it with the supplied shrink tube (insulating
sleeve) or insulating tape.
Take measures to prevent oil or water from entering the insulating sleeve or
tape.
3)
Make sure to fix the terminal cover on the terminal block of the VK driver.
Install the driver in the driver housing and fix the cable securely with a clamp
near the teminal block.
4)
Keep the unshielded portion of cables at connecting parts as short as possible.
(less than 100mm recommended.)
Connect the shielded wires to the COM terminal.
5)
Use a 3-core shielded cable with AWG No. 14 to No. 18 gage stranded
conductors for wiring between the VK driver and the safety barrier, and
between the safety barrier and the monitor (max. length 500 m (max. length
1,640ft REF.) [Cw ≤ 0.134µF, Lw ≤ 0.71mH]).
In the case of other Intrinsic Safety, refer to an Instruction Manual of each
Transducer.
Keep wiring away from power and control lines to prevent noise interference.
6)
•
Install the safety barrier in the enclosure.
Make sure to turn the power off before wiring work to prevent accidents due to
electric shock.
Warning
•
If wired according to this drawing, the resistance of the safety barrier causes the
input voltage of the monitor to drop by about 1%.
-7-
4.
INTERCONNECTION
VM-5C
4-1-2 MODEL FK AND VM-5G OR VM-5Y1,2,3
FK-202F input : TIIS Ex ia IIC T4
Safety Barrier Terminals
Signal name
Wire no.
Monitor Terminals
Hazardous area
Safe area
No.
No.
Terminal name
1ch
No.
Terminal name
2ch
No.
OUT
A
4
2
IN
A1
IN
B1
COM
B
Earth
Earth
COM
A2
COM
B2
-24V
C
3
1
PWR
A3
PWR
B3
Shield (COM)
D
Earth
Earth
COM
A2
COM
B2
-8-
4.
INTERCONNECTION
•
VM-5C
Mandantory
Note No.
in drawing
1)
Caution
tape.
Use flexible armored cables as sensor cables and extension cables, unless these
cables are not at risk for damage.
Without armor
With armor
With fluoro resin coating armor
Allowable tension
2)
3)
4)
: 30 mm (1.18 in REF.)
: 50 mm (1.97 in REF.)
: 75mm
: 98.1N (10 kgf REF.)
conductors for wiring between the FK driver and the safety barrier, and
between the safety barrier and the monitor (max. length 500 m (max. length
1,640ft REF.) [Cw ≤ 0.09µF, Lw ≤ 1.84mH]).
In the case of other Intrinsic Safety, refer to an Instruction Manual of each
Transducer.
Keep wiring away from power and control lines to prevent noise interference.
•
5)
Install the safety barrier in the enclosure.
6)
Remove the insulation so there is 9mm of exposed wire, and twist the wire.
Do not finish terminals of the wire with solder.
electric shock.
Warning
•
If wired according to this drawing, the resistance of the safety barrier causes the
input voltage of the monitor to drop by about 1%.
-9-
4.
INTERCONNECTION
VM-5C
4-2 NON-INTRINSIC SAFETY EXPLOSION-PROOF CONSTRUCTION
4-2-1 MODEL VK AND VM-5G OR VM-5Y1,2,3
Connected terminals
Signal name
Wire no.
CH1
Terminal name
CH2
No.
Terminal name
No.
Output
A
IN
A1
IN
B1
Common, Shield
B, D
COM
A2
COM
B2
Power
C
PWR
A3
PWR
B3
-10-
4.
INTERCONNECTION
•
VM-5C
Mandantory
Note No.
in drawing
1)
•
Warning
Caution
tape.
Without armor : 30 mm (1.18 in REF.)
With armor :
50 mm (1.97 in REF.)
Allowable tension : 98.1N (10 kgf REF.)
2)
3)
conductors for wiring between the VK driver and the monitor.
Do not wire the cables together in high tension ducts.
electric shock.
-11-
4.
INTERCONNECTION
4-2-2
VM-5C
MODEL FK AND VM-5G OR VM-5Y1,2,3
Connected terminals
Signal name
Wire no.
CH1
CH2
Terminal name
No.
Terminal name
No.
B1
OUT
A
IN
A1
IN
COM
B
COM
A2
COM
B2
-24V
C
PWR
A3
PWR
B3
Shield (COM)
D
COM
A2
COM
B2
-12-
4.
INTERCONNECTION
•
VM-5C
Mandantory
Note No.
in drawing
Caution
tape.
1)
•
Warning
Without armor
With armor
With fluoro resin coating armor
:
:
:
30 mm (1.18 in REF.)
50 mm (1.97 in REF.)
75mm
Allowable tension
:
98.1N (10 kgf REF.)
2)
3)
conductors for wiring between the FK driver and the monitor.
Do not wire the cables together in high tension ducts.
4)
Remove the insulation so there is 9mm of exposed wire, and twist the wire.
Do not finish terminals of the wire with solder.
electric shock.
-13-
5.
DESCRIPTION OF FUNCTIONS
VM-5C
5-1 DISPLAY
Measured eccentricity values, alarm set values, and sensor set gap voltage are normally displayed
on LCDs.
When the measured value lies outside the measurement range (1 - approx. 300rpm, 1 -
approx. 600rpm), the eccentricity pk-pk value is indicated as 0%.
The direct eccentricity output is also the case when the revolution exceeds 12rpm.
5-2 ALARM FUNCTIONS
ALERT alarm, DANGER alarm and
OK (input abnormal) alarm are contact-output and
displayed on LEDs.
5-3 DANGER (DAN) ALARM
A measured value exceeding the DAN alarm set values causes alarm output at the DAN contact
and DAN alarm display.
For details refer to 7. PARAMETER SETTING on page 21.
5-4 ALERT (ALE) ALARM
A measured value exceeding the ALE alarm set values causes alarm output at the ALE contact and
ALE alarm display.
5-5 OK (INPUT ABNORMAL) ALARM
When the level of the signal from the transducer becomes abnormal, OK alarm outputs and LCD is
flashing. This condition is maintained by the off-delay timer for approx. 15 sec. after the level of
the transducer signal has returned to normal.
Once OK alarm is reset, display and recorder output resume after elapse of a time equal to one to
two times the input synchronizing phase pulse interval.
Input type
Detectable input abnormal conditions
VK Transducer
Sensor is short-circuited or broken (broken wire in CH2).
Extension cable is short-circuited or broken (broken wire in CH2).
Sensor set gap is too small or too large (only CH2).
Cable is short-circuited or broken between transducer and monitor.
RD Tacho Driver
Sensor is short-circuited or broken.
Extension cable is short-circuited or broken.
Sensor set gap is too small.
Cable is short-circuited or broken between transducer and monitor.
5-6 ZERO SHIFT FUNCTION
Shifts the direct eccentricity on the LCD display to the desired position.
5-7 ALARM DELAY FUNCTION
To prevent output of false DAN/ALE alarm due to noise, etc., a delay time can be specified
separately for each channel.
-14-
5.
VM-5C
5-8 FIRSTOUT DISPLAY
•
Installation in VM-5H3, 5W1 Instrument Rack
Causes the alarm lamp of the channel that first output alarm to flash.
•
Installation in VM-5G Single Unit Instrument Rack
Causes the lamp of the alarm first output to flash.
•
An alarm lamp set flashing by the First-out Display function cannot be reset by
pressing the RES (RESET) key.
(Reset by shorting between the RES and COM terminals.)
5-9 BYPASS FUNCTION
Used to disable alarm output while setting the alarm parameters, or during maintenance/inspection
work. The alarm BYPASS lamp flashes or lights during this operation. Set by turning the BYPASS
switch to ON.
•
While BYPASS FUNCTION is in operation, the machine is not protected.
Warning
5-9-1 DANGER BYPASS
Cuts off DANGER alarm.
While cut off, the DANGER alarm and BYPASS lamps are flashing.
This function is activated by means of the DANGER BYPASS switch.
•
If mounted in the VM-5H3 or VM-5W1 Instrument Rack, all units in the instrument
rack can be set collectively to DANGER BYPASS.
For details refer to VM-5H3 or VM-5W1 Instrument Rack instruction manual.
5-9-2 CH1 BYPASS, CH2 BYPASS
DANGER alarm, ALERT alarm, OK alarm, display and recorder output are cut off. While cut off,
the OK lamp goes off and the BYPASS lamp lights.
This function can be activated by means of the BYPASS switch.
5-10 POWER ON TIMER MODE
Operates for approx. 100 sec. after the power is turned on. In this mode, all alarm functions are
disabled and the BYPASS and OK lamps flash.
-15-
5.
VM-5C
5-11 ALARM RELAY MODE
Each alarm contact can be set to either normally de-energized or normally energized.
Alarm contact operation
Monitor power ON
Monitor power
OFF
Normal state
Alarm state
NO contact NORMALLY DE-ENERGIZED
OPEN
OPEN
CLOSE
NO contact NORMALLY ENERGIZED
OPEN
CLOSE
OPEN
NC contact NORMALLY DE-ENERGIZED
CLOSE
CLOSE
OPEN
NC contact NORMALLY ENERGIZED
CLOSE
OPEN
CLOSE
5-12 ALARM RESET MODE
The automatic reset of all alarm output and alarm lamps can be set when the measured value or
input signal return to normal.
In addition to above, the self-holding function can be also set for
each alarm output that holds the alarm condition until reset by setting RES key (inside of the front
panel) or by shorting between RES and COM terminal.
•
Alarm reset is not possible until the output condition has been released.
5-13 MONITOR OUTPUT / PULSE OUTPUT
CH1 : The input signal from the sensor or the internally shaped pulse signal is output from the
BNC connector on the monitor front panel and buffer output terminal on the rear panel
(VM-5G Single Unit Instrument Rack, VM-5Y Relay Module Unit).
CH2 : A vibration waveform signal for vibration signal analysis is output through the output
amplifier.
5-14 RECORDER OUTPUT
An analog signal proportional to the measured value is output from the terminal block.
When the
measured value lies outside the measurement range (1 - approx. 300rpm, 1 - approx. 600rpm) the
eccentricity pk-pk recorder output becomes 0% (1V or 4mA).
The direct eccentricity recorder output
also becomes 0% (3V or 12mA) when the revolution
exceeds 12rpm.
5-15 SELF-DIAGNOSTIC FUNCTION
Any failures in the input system, such as sensor broken or imperfect connections are detected, then
an input abnormal alarm is contact-output and (simultaneously), ALERT and DANGER alarm
circuits are cut off.
-16-
5.
VM-5C
5-16 POWER SEQUENCE
If mounted in the VM-5G Single Unit Instrument Rack, the secondary power supply can be cut off
by shorting between the P-S (POWER SEQUENCE) and COM terminals.
•
This function can be used for pulling out or pulling in the monitor unit at the
emergency time.
Caution
However, do not use for long time shorting of more than one (1)
minute or turning on and off repeatedly.
Also, the parallel connection for the two (2) or more monitors should not be allowed.
5-17 TIMED OK CHANNEL DEFEAT
When OK alarm is output, DANGER alarm, ALERT alarm, display, and recorder output are
disabled.
5-18 TRIGGER FUNCTION
It is possible to select between automatic setting of the optimum trigger for the input waveform and
manual trigger (default). The trigger mode can be selected by means of the mode switch located
inside the unit.
•
Use manual trigger for normal monitoring.
5-19 SUPPRESSION FUNCTION
This function can suppress the measurement around zero measurement point of the monitor by the
effect of the piping vibration or electric noise, etc. during the machine stopping.
The suppression can be set at 0.0 to 10.0 % (0.1% step) of the monitor range.
ex.) If the suppression is set at 2.0%, monitor measurement less than 2.0% shall be output as 0.0%.
-17-
6.
VM-5C
6-1 DESCRIPTION OF FRONT PANEL/SIDE VIEW
No.
Name
No.
Name
1
LCD display
8
Tag, Ser.No. plate
2
DANGER lamp
9
LCD board
3
ALERT lamp
10
Slide frame
4
OK lamp
11
Main board frame
5
BYPASS lamp
12
Main board
6
Monitor output connector
13
DIN connector (64pin)
7
Name plate
---
-18-
----------
6.
VM-5C
6-2 DESCRIPTION OF PARTS
1 LCD display
This LCD display serves for display of measured values, alarm set values, sensor set gap
voltage value and other set values.
2 DANGER alarm lamp
Lit when DANGER alarm is output.
3 ALERT alarm lamp
Lit when ALERT alarm is output.
4 OK lamp
Flashes (steady light in normal condition) when OK (input abnormal) alarm is output.
5 BYPASS lamp
Flashes during DANGER bypass and lights during CHANNEL bypass.
6 Monitor output connector
This is a BNC output connector for connection of an oscilloscope to observe the waveform, or
for output to other devices such as an analyzer.
The input signals from the transducers or the internally shaped pulse signals are output
through a buffer amplifier.
•
Mandatory
Make sure to insulate the monitor output against earth.
If not insulated, a 2-point earth system results, which may cause noise interference.
7 Name plate
8 Tag, Ser. No. plate
The TAG NO. and SER.NO. are entered on this plate.
9 LCD board
10 Slide frame
11 Main board frame
12 Main board
13 DIN connector (64pin)
Connector for connection to the VM-5G Single Unit Instrument Rack or
VM-5H3 or VM-5W1 Instrument Rack.
-19-
6.
VM-5C
6-3 DESCRIPTION OF LCD DISPLAY
NO.
NAME
NO.
NAME
1
Measured eccentricity pk-pk value (digital)
6
Measured direct pk-pk value (digital)
2
Measured eccentricity pk-pk value (bar graph)
7
Measured direct pk-pk value (bar graph)
3
CH1 sensor set gap voltage value
8
CH2 sensor set gap voltage value
4
DANGER alarm set value(for eccentricity pk-pk)
9
H-DANGER alarm set value(for direct eccentricity)
5
ALERT alarm set value(for eccentricity pk-pk)
10
H-ALERT alarm set value(for direct eccentricity)
---
-------------------------------
11
L-ALERT alarm set value(for direct eccentricity)
---
-------------------------------
12
L-DANGER alarm set value(for direct eccentricity)
1
6
MEAS1
%
4
MEAS2
9
%
□□□MEAS2
MEAS1
5
100
%
20
V
100
%
10
7
3
80
16
80
60
12
60
40
8
40
2
11
12
20
4
20
0
0
0
LCD display
-20-
7.
PARAMETER SETTING
VM-5C
7-1 WITHDRAWAL OF FACE PLATE
•
Pull out the face plate to gain access to the keys and DIP switches for setting the
parameters located inside the unit.
1) Evenly loosen the knurled screw at the top and bottom of face plate.
•
Should screw manually.
Do not use any tools.
Prohibition
2) Pull out the face plate.
•
Do not pull out beyond the depth of the slide frame.
•
Make sure not to touch internal chassis.
•
Failure to turn off the power before pulling the monitor unit out of the rack will result
Prohibition
Prohibition
Caution
in serious damage and accidents.
-21-
7.
PARAMETER SETTING
VM-5C
3) Open the face plate toward the right.
•
Make sure not to touch internal printed circuit board.
Prohibition
4) The keys and DIP switches for setting the parameters are located inside the unit.
Specification set keys
SET
RES
CHK
1 2 3 4 5 6
ON
DIP switches
-22-
1BY
2BY
DBY
MS1
MS2
N•A
7.
PARAMETER SETTING
VM-5C
7-2 BASIC KEY OPERATIONS
• SET
(SET) key
:
Used to change the display mode of the LCD display and to
finalize input.
•
(UP) key
:
Used to change parameters and increment set values.
•
(DOWN) key :
Used to change parameters and decrement set values.
• RES
(RESET) key :
Used to reset alarms set to self-holding.
•
Alarm reset is not possible until the output condition has been released.
•
An alarm lamp set flashing by the First-out Display function cannot be reset.
(Reset by shorting between the RES and COM terminals.)
• CHK
(CHECK) key :
The CHECK key is used to adjust the gain while changing set
values with the UP and DOWN keys.
For example, if the CHECK key is pressed while the value 0.1
appears on the MEAS 2 LED display, a value corresponding to the
measurement range × 0.1 can be set.
•
Each operation of the CHECK key will multiply the multiplier by 10.
:
When the CHECK key is pressed during normal monitoring, the
monitor will go through self-diagnosis in the following sequence :
(1) LCD, LED display test (all lamps light)
(2) Self-diagnosis
(3) Display of diagnosis result
•
(Normal)
(Abnormal)
The diagnosis result for CH1 is indicated on the MEAS 1 display and that for CH2 on
the MEAS 2 display.
•
If an abnormality is found as a result of self-diagnosis, the error content is displayed
after approx. 3 seconds.
•
In case of more than one abnormality, error contents are displayed at 3-second
intervals.
-23-
7.
PARAMETER SETTING
VM-5C
Error content display
Items
CH1 OK (input abnormal) alarm HIGH
CH2 OK (input abnormal) alarm HIGH
CH1 OK(input abnormal) alarm LOW
CH2 OK(input abnormal) alarm LOW
CH1 H-SPEED
CH2 H-SPEED
CH1 L-SPEED
CH2 L-SPEED
CH1 A/D input 5V side over
-24-
Display
7.
PARAMETER SETTING
VM-5C
7-3 DIP SWITCH SETTING
OFF
ON
1
1) 1BY(1CH BYPASS) S.W.
2
2) 2BY(2CH BYPASS) S.W.
3
3) DBY(DANGER BYPASS) S.W.
4
4) MS1(MODE-SELECT1) S.W. (normally OFF)
5
5) MS2(MODE-SELECT2) S.W.
6
6) N·A(not available)
DIP Switches
1) 1BY (CH1 BYPASS) Switch
"ON"
To select CH1 BYPASS function.
"OFF" Normal monitoring
2) 2BY (CH2 BYPASS) Switch
"ON"
To select CH2 BYPASS function.
3) DBY (DANGER BYPASS) Switch
"ON"
To select DANGER BYPASS function.
4) MS1 (MODE-SELECT1) Switch (normally OFF)
•
Set normally to “OFF”. Parameter setting mode is disabled.
5) MS2 (MODE-SELECT2) Switch
“ON”
For setting the alarm reset mode, alarm delay time, alarm relay mode, first-out display,
and timed OK channel defeat.
Also enables setting the address when used in combination with the VM-5H3 or 5W1
Instrument Rack and VM-5P1,2 Communication/Phase Marker Unit or VM-53 Dual
Communication Unit.
To PARAMETER SETTING 1.
“OFF”
For changing the set values for DANGER alarm and ALERT alarm, and adjusting
trigger level zero shift, measured value zero span, and recorder output zero span.
To PARAMETER SETTING 2.
-25-
7.
PARAMETER SETTING
VM-5C
7-4 PARAMETER SETTING 1
7-4-1 PARAMETER SETTING 1
•
Setting the parameters for alarm reset mode, alarm delay time, alarm relay mode,
first-out display, and timed OK channel defeat is enabled.
•
Setting the address for use in combination with the VM-5H3 or VM-5W1 Instrument
Rack and VM-5P1,2 Communication/Phase Marker Unit or VM-53 Dual
Communication Unit is enabled.
7-4-2 MODE SELECT SWITCH SETTING
OFF
ON
1
1)1BY(CH1 BYPASS) S.W.
2
2)2BY(CH2 BYPASS) S.W.
3
4
5
6
DIP switches
Confirm that the MS1 (MODE-SELECT1) switch is "OFF".
Place the MS2 (MODE-SELECT2) switch in "ON" position.
•
Setting other than the above are not enabled to set the parameters.
-26-
7.
PARAMETER SETTING
VM-5C
7-4-3 DISPLAY SCREEN HIERARCHY
The flow chart shows the hierarchy of the PARAMETER SETTING 1 display.
PARAMETER SETTING 1
2
DANGER alarm reset mode set (for eccentricity pk-pk)
DANGER alarm reset mode set (for direct eccentricity)
ALERT alarm reset mode set (for eccentricity pk-pk)
ALERT alarm reset mode set (for direct eccentricity)
CH1 OK alarm reset mode set
CH2 OK alarm reset mode set
DANGER alarm delay time set (for eccentricity pk-pk)
DANGER alarm delay time set (for direct eccentricity)
ALERT alarm delay time set (for eccentricity pk-pk)
ALERT alarm delay time set (for direct eccentricity)
CH1 OK alarm delay time set
CH2 OK alarm delay time set
1
-27-
7.
PARAMETER SETTING
VM-5C
1
DANGER alarm relay mode set (for eccentricity pk-pk)
DANGER alarm relay mode set (for direct eccentricity)
ALERT alarm relay mode set (for eccentricity pk-pk)
ALERT alarm relay mode set (for direct eccentricity)
CH1 OK alarm relay mode set
CH2 OK alarm relay mode set
First-out display set
Timed OK channel defeat set
Address set
2
-28-
Display only if used in
combination with the
VM-5Y3,4,5,6 Relay Module Unit.
7.
PARAMETER SETTING
VM-5C
7-4-4 DISPLAY CONTENT
The characters and numerals indicated on the LCD display when setting the parameters represent
the following parameters and their status.
MEAS 1 .... Displays the parameters that can be set.
MEAS 1
Display
Parameter
DANGER alarm reset(for eccentricity pk-pk)
DANGER alarm reset(for direct eccentricity)
MEAS1
%
ALERT alarm reset(for eccentricity pk-pk)
%
ALERT alarm reset(for direct eccentricity)
MEAS2
□□□MEAS2
MEAS1
100
%
20
V
100
%
CH1 OK alarm reset
CH2 OK alarm reset
80
16
DANGER alarm delay time(for eccentricity pk-pk)
80
DANGER alarm delay time(for direct eccentricity)
ALERT alarm delay time(for eccentricity pk-pk)
60
12
60
ALERT alarm delay time(for direct eccentricity)
CH1 OK alarm delay time
40
8
CH2 OK alarm delay time
40
DANGER alarm relay mode(for eccentricity pk-pk)
20
4
DANGER alarm relay mode(for direct eccentricity)
20
ALERT alarm relay mode(for eccentricity pk-pk)
ALERT alarm relay mode(for direct eccentricity)
0
0
0
CH1 OK alarm relay mode
CH2 OK alarm relay mode
LCD display
First-out display
Timed OK channel defeat
Address (communication address ID (1 to 10))
-29-
7.
PARAMETER SETTING
VM-5C
MEAS 2 .... Displays the status of each parameter.
Display
LATCH self-hold
MEAS 2
NON LATCH auto-reset
Alarm delay time None
MEAS1
%
MEAS2
ENERGIZED ALARM
(Normally DE-ENERGIZED)
%
□□□MEAS2
MEAS1
100
%
20
V
100
%
16
80
Parameter status
DE-ENERGIZED ALARM
(Normally ENERGIZED)
OFF
80
ON
Alarm delay time 1 sec.
60
12
60
40
8
40
20
4
20
0
0
0
LCD display
-30-
7.
PARAMETER SETTING
VM-5C
7-4-5 KEY OPERATIONS
The chart below describes the key operations for PARAMETER SETTING 1.
•
The display is reset to normal if there is no key operation for approx. 60 sec.
LCD display
Procedure
1
Key operation
SET
SET
SET
SET
9
SET
SET
13
Present
status
Press SET key.
SET
Specify DANGER alarm
reset mode (for direct
eccentricity).
Specify ALERT alarm reset
mode (for eccentricity
pk-pk).
Select latch or non-latch with
UP or DOWN key.
Present
status
Press SET key.
Specify ALERT alarm reset
mode (for direct
eccentricity).
UP or DOWN key.
Present
status
Press SET key.
Specify CH1 OK (input
abnormal) alarm reset mode.
UP or DOWN key.
Present
status
Press SET key.
Press UP or
DOWN key.
12
reset mode (for eccentricity
pk-pk).
UP or DOWN key.
Press UP or
DOWN key.
10
11
Present
status
Press SET key.
Press UP or
DOWN key.
8
Remarks
UP or DOWN key.
Press UP or
DOWN key.
6
7
Present
status
Press UP or
DOWN key.
4
5
Press SET key
more than 5 sec.
MEAS 2
(Parameter
Status)
Press UP or
DOWN key.
2
3
MEAS 1
(Parameter)
abnormal) alarm reset mode.
UP or DOWN key.
Present
status
Press SET key.
-31-
delay time (for eccentricity
pk-pk).
7.
PARAMETER SETTING
VM-5C
LCD display
Procedure
Key operation
SET
SET
19
SET
SET
23
SET
•
Present
status
Press SET key.
SET
Specify ALERT alarm delay
time (for eccentricity pk-pk).
Select NON (none), 1 sec., 3
sec., or 6 sec. with UP or
DOWN key.
Present
status
Press SET key.
Specify ALERT alarm delay
time (for direct eccentricity).
DOWN key.
Present
status
Press SET key.
abnormal) alarm delay time.
Select NON (none) with UP
or DOWN key.
Present
status
Press SET key.
abnormal) alarm delay time.
Select NON (none) with UP
or DOWN key.
Press UP or
DOWN key.
24
25
DOWN key.
Press UP or
DOWN key.
22
delay time (for direct
eccentricity).
Press UP or
DOWN key.
20
21
Present
status
Press SET key.
Press UP or
DOWN key.
18
Remarks
DOWN key.
Press UP or
DOWN key.
16
17
MEAS 2
(Parameter
Status)
Press UP or
DOWN key.
14
15
MEAS 1
(Parameter)
Present
status
Press SET key.
To set OK alarm delay time, select NON (none).
-32-
relay mode (for eccentricity
pk-pk).
7.
PARAMETER SETTING
VM-5C
LCD display
Procedure
Key operation
SET
SET
31
Press SET key.
SET
SET
35
36
•
Present
status
SET
Specify ALERT alarm relay
mode (for eccentricity
pk-pk).
Select ENERGIZED or
DEENERGIZED with UP or
DOWN key.
Present
status
Specify ALERT alarm relay
mode (for direct
eccentricity).
Select ENERGIZED or
DOWN key.
Present
status
Press SET key.
abnormal) alarm relay mode.
Select ENERGIZED or
Press UP or
DOWN key.
34
relay mode (for direct
eccentricity).
DOWN key.
Press UP or
DOWN key.
32
Select ENERGIZED or
Press SET key.
30
33
Present
status
Press SET key.
Press UP or
DOWN key.
Remarks
Select ENERGIZED or
DOWN key.
Press UP or
DOWN key.
28
29
MEAS 2
(Parameter
Status)
Press UP or
DOWN key.
26
27
MEAS 1
(Parameter)
DOWN key.
Present
status
Press SET key.
abnormal) alarm relay mode.
Select ENERGIZED or
DOWN key.
Press UP or
DOWN key.
Procedures 35 and 36 are displayed only when using the monitor in combination
with the VM-5Y3,4,5,6 Relay Module Unit.
-33-
7.
PARAMETER SETTING
VM-5C
LCD display
Procedure
37
Key operation
SET
SET
SET
•
SET
Remarks
Specify first-out display.
Select ON (enable) or OFF
(disable) with UP or DOWN
key.
Present
status
Press SET key.
Specify timed OK channel
defeat.
Select ON (enable) or OFF
(disable) with UP or DOWN
key.
Present
status
Press SET key.
• Specify address.
Select address between
1 and 10 with UP or DOWN
key.
Press UP or
DOWN key.
42
43
Present
status
Press SET key.
Press UP or
DOWN key.
40
41
MEAS 2
(Parameter
Status)
Press UP or
DOWN key.
38
39
MEAS 1
(Parameter)
Present
status
Press SET key.
Return to procedure 1.
Make sure to assign a unique address for use with the VM-5P1,2 Communication/
Phase Marker unit and VM-5H3 or VM-5W1 Instrument rack or VM-53 Dual
Mandatory
Communication Unit.
Same address number is not allowed in the same rack.
•
The display is reset to normal approx. 60 sec. after setting is completed.
-34-
7.
PARAMETER SETTING
VM-5C
7-5 PARAMETER SETTING 2
7-5-1 PARAMETER SETTING 2
•
This chapter describes how to change the DANGER and ALERT alarm set values
and set trigger level, adjust zero shift, measured value zero span, and recorder
output zero span.
•
For adjustment of measured value zero span and recorder output zero span refer to
page 57 "MAINTENANCE".
7-5-2 MODE SELECT SWITCH SETTING
OFF
ON
1
1) 1BY(CH1 BYPASS) S.W.
2
2) 2BY(CH2 BYPASS) S.W.
3
4
5
6
DIP switches
Confirm that the MS1 (MODE-SELECT1) switch is "OFF".
Place the MS2 (MODE-SELECT2) switch in "OFF" position.
•
Setting other than the above are not enabled to set the parameters.
-35-
7.
PARAMETER SETTING
VM-5C
7-5-3 DISPLAY HIERARCHY
The flow chart shows the hierarchy of the PARAMETER SETTING 2 display.
PARAMETER SETTING 2
4
DANGER alarm (for eccentricity pk-pk)
Set range : 0 to 110% of monitor range or ineffective
H-DANGER alarm (for direct eccentricity)
ALERT alarm (for eccentricity pk-pk)
H-ALERT alarm (for direct eccentricity)
L-ALERT alarm (for direct eccentricity)
L-DANGER alarm (for direct eccentricity)
CH1 trigger level set
Set range : 0.0 to 24.0V (Absolute value displayed)
CH2 zero shift adjustment
0 to 100% of monitor range
3
Refer to Maintenance for more detail.
-36-
7.
PARAMETER SETTING
VM-5C
3
Measured value zero adjustment(for direct eccentricity)
Adjustment range:±5% of monitor range
Measured value span adjustment(for direct eccentricity)
Recorder output zero adjustment(for eccentricity pk-pk)
Recorder output zero adjustment(for direct eccentricity)
Recorder output span adjustment(for eccentricity pk-pk)
Recorder output span adjustment(for direct eccentricity)
Suppression set
Adjustment range: 0 to 10% of monitor range
4
-37-
7.
PARAMETER SETTING
VM-5C
7-5-4 DISPLAY CONTENT
The characters and numerals indicated on the LCD display when setting the parameters represent
the following parameters and their status.
MEAS 1····Displays the parameters that can be set.
Display
MEAS 1
Parameter
DANGER alarm set
(for eccentricity pk-pk)
H-DANGER alarm set
(for direct eccentricity)
MEAS1
%
ALERT alarm set
MEAS2
%
H-ALERT alarm set
□□□MEAS2
MEAS1
100
%
20
V
100
%
L-ALERT alarm set
80
16
L-DANGER alarm set
80
CH1 trigger level set
60
12
CH2 zero shift adjustment
60
Measured value zero adjustment
40
8
Measured value span adjustment
40
Recorder output zero adjustment
20
4
Recorder output zero adjustment
20
Recorder output span adjustment
0
0
Recorder output span adjustment
0
Suppression set
LCD display
-38-
7.
PARAMETER SETTING
VM-5C
MEAS 2 .... Displays the status of each parameter.
Display
Parameter status
Disable
MEAS 2
MEAS1
Error
%
MEAS2
%
□□□MEAS2
MEAS1
100
%
20
V
100
%
80
16
80
60
12
60
40
8
40
20
4
20
0
0
0
LCD display
•
The limit value specified for DANGER alarm must be higher than that for
ALERT alarm.
•
The limit value specified for H-DANGER alarm must be higher than that for
H-ALERT alarm.
•
The limit value specified for L-DANGER alarm must be lower than that for
L-ALERT alarm.
•
The limit value specified for H-ALERT alarm must be higher than that for
L-ALERT alarm.
-39-
7.
PARAMETER SETTING
VM-5C
7-5-5 KEY OPERATIONS
The chart below describes the key operations for PARAMETER SETTING 2.
•
LCD display
Procedure
1
Key operation
SET
CHK
2
3
SET
CHK
4
5
6
7
SET
CHK
SET
CHK
8
9
10
11
SET
CHK
SET
MEAS 1
(Parameter)
MEAS 2
(Parameter
Status)
Remarks
Press SET key
more than 5 sec.
Present status
(for eccentricity pk-pk).
Press CHECK
0 to 110% of
Fix digit with CHECK key
and UP or
DOWN key.
monitor range and specify value with UP or
Disabled
DOWN key.
Press SET key.
Present status
Specify H-DANGER alarm
(for direct eccentricity).
Press CHECK
0 to 110% of
and UP or
DOWN key.
Disabled
DOWN key.
Press SET key.
Present status
Specify ALERT alarm (for
eccentricity pk-pk).
Press CHECK
0 to 110% of
and UP or
DOWN key.
Disabled
DOWN key.
Press SET key.
Present status
Specify ALERT alarm (for
direct eccentricity).
Press CHECK
0 to 110% of
and UP or
DOWN key.
Disabled
DOWN key.
Press SET key.
Present status
Specify L-ALERT alarm
Press CHECK
0 to 110% of
and UP or
DOWN key.
Disabled
DOWN key.
Press SET key.
Present status
-40-
Specify L-DANGER alarm
7.
PARAMETER SETTING
VM-5C
LCD display
Procedure
Key operation
CHK
12
13
SET
CHK
14
15
SET
MEAS 1
(Parameter)
CHK
-10 to 110% of Fix digit with CHECK key
Press SET key.
Present status Specify CH1 trigger level.
monitor range
Disabled
Press CHECK
0.0 to 24.0V
and UP or
DOWN key.
18
19
SET
CHK
SET
CHK
20
•
and specify value with UP or
DOWN key.
(Absolute value and specify value with UP or
displayed)
A/D
input value
Press SET key.
A/D
input value
key for approx.
5sec.
Present
17
Remarks
Press CHECK
and UP or
DOWN key.
Press CHECK
16
MEAS 2
(Parameter
Status)
Press SET key.
measured
value
Present
Press UP or
DOWN key.
DOWN key.
Adjust CH2 zero shift.
For Auto Zero Shift, press
CHECK key for approx. 5
sec.
Specify measured value zero
adjustment
Adjust with CHECK key.
measured
value
(Make sure to adjust the zero
point after zero shift
adjustment.)
Present
Specify measured value span
Press SET key.
measured
value
Press CHECK
Present
Set gain with CHECK key
measured
value
and adjust span with UP or
DOWN key.
and UP or
DOWN key.
adjustment
If zero shift is not performed, proceed to the next step by pressing the SET key.
-41-
7.
PARAMETER SETTING
VM-5C
LCD display
Procedure
21
Key operation
SET
CHK
22
MEAS 1
(Parameter)
MEAS 2
(Parameter
Status)
Press SET key.
Present
measured
value
Specify recorder output (for
eccentricity pk-pk) zero
adjustment.
Press CHECK
Present
measured
value
and adjust recorder output
with UP or DOWN key.
and UP or
DOWN key.
Present
23
24
SET
CHK
Press SET key.
measured
value
Press CHECK
and UP or
DOWN key.
26
SET
CHK
SET
CHK
28
29
SET
30
31
•
SET
direct eccentricity) zero
adjustment.
Present
Press SET key.
measured
value
Press CHECK
Present
measured
value
and UP or
DOWN key.
Present
27
measured
value
Present
25
Remarks
Press SET key.
measured
value
Press CHECK
and UP or
DOWN key.
Press SET key.
eccentricity pk-pk) span
adjustment.
direct eccentricity) span
adjustment.
Present
measured
value
Present status Specify suppression set value.
Press UP and
DOWN key.
monitor range
Press SET key.
Present status Return to procedure 1.
0 to 10% of
Specify value with UP or
DOWN key.
-42-
7.
PARAMETER SETTING
VM-5C
7-6 TRIGGER LEVEL AND HYSTERESIS
A pulse-like analog signal is output by a sensor inside the VM-5C (CH1) and compared with a
standard DC voltage to shape the waveform. The input signal from the sensor or the shaped pulse
signal can be observed at the BNC connector on the monitor front panel and buffer output terminal
on the relay panel (VM-5G Single Unit Instrument Rack, VM-5Y Relay Module Unit).
The level of the above standard voltage is different in the ON and OFF state to prevent
malfunctioning due to noise. It is referred to as the trigger level set voltage and the difference
between ON and OFF voltage, as hysteresis. If these voltages are set to a level so as to traverse the
waveform, a shaped pulse is produced as shown in Fig. 7-6-1 with which the rotation speed can be
measured. However, if they are set to the level shown in Fig. 7-6-2, this is interpreted as
there being no tachometer output because a shaped pulse is not produced. Also note that
measuring error will be caused if the hysteresis is smaller than the noise contained in the
input waveform as shown in Fig. 7-6-3. For these reasons, setting of the above levels is of
great importance.
Monitor Output
0V
t
Trigger Level
Setting Voltage
Hysteresis
-20V
5V
0V
t
Pulse Output
Fig. 7-6-1
-43-
7.
PARAMETER SETTING
VM-5C
Monitor Output
0V
t
Trigger Level
Setting Voltage
Hysteresis
-20V
5V
0V
t
Pulse Output
Fig. 7-6-2
Monitor Output
0V
t
Trigger Level
Setting Voltage
Hysteresis
-20V
5V
0V
t
Pulse Output
Fig.7-6-3
-44-
7.
PARAMETER SETTING
VM-5C
7-7 GEAR TOOTH FORM SUITABLE FOR DETECTION
The recommended tooth form and dimensions are shown in the drawing below (for VK Series and
RD-05A). If the teeth are smaller than the below dimensions , the amplitude of the detection signal
becomes so small that detection error may result.
(1) Gear
BA
D
C
(2) Projection
D
A
C
•
Mandatory
To detect a projection (gear), provide surface A of the projection with a concentric
curve. Do not make it flat.
(3) Key groove
D
B
C
(4) Target for rotor speed detection
VK-202A
Input
VK-452A VK-302P VK-602P
RD-05A
A
≥6
≥16
≥8
≥18
Dimension of
B
≥7
≥20
≥8
≥20
target
[Recommended]
C
≥2.5
≥4.5
≥2.5
≥5.0
(mm)
D
≥16
≥36
≥20
≥40
Set gap
[Recommended]
-1.0 to 1.5 2.5 to 3.5 1.0 to 1.5 2.5 to 3.5
(mm)
-45-
7.
PARAMETER SETTING
•
VM-5C
When the target shifts in the axial direction caused by differential expansion, add the
amount of target shift to the ”D” value to consider so that the target surface is not
Mandatory
dislocated from the sensor.
•
A circular projection or circular hole if used as a target may easily cause a pitch error
or measurement error due to shaft eccentricity, displacement in the axial direction,
etc. which are not appropriate for rotor speed detection.
•
Install the sensor so that it is located at the center of the target width direction.
•
A gear with uneven tooth gap can cause the monitor to malfunction. Therefore,
make sure to use a gear with even tooth gap.
D
-46-
7.
PARAMETER SETTING
VM-5C
7-8 TRIGGER MODE SELECTION
(1) Remove the monitor unit from the rack.
•
Refer to the instruction manual of the instrument rack in which the monitor is
installed.
Mandatory
(2) The Trigger Mode switch is located on the trigger card on the main board. Set this switch to the
right for Manual Trigger.
S1
CH1 TRG. MODE
AUTO
MAN.
CH1
HYS. SET
0.1V
0.2V
0.5V
1.0V
VM-5
TRIGGER
CARD
•
J1
VM-5 TRIGGER CARD
Do not touch any parts not specifically mentioned.
Mandatory
(3) After verifying the trigger mode selected, reinstall the monitor unit in the rack.
•
Mandatory
installed.
-47-
7.
PARAMETER SETTING
VM-5C
7-9 SETTING PROCEDURE FOR MANUAL TRIGGER
(1) Select Manual Trigger mode.
Refer to "7-8 TRIGGER MODE SELECTION" on page 47.
(2) Select the monitor output referring to "7-12 MONITOR OUTPUT/PULSE OUTPUT
SELECTION" on page 51.
(3) Allow to warm up for at least 15 minutes after power-up.
(4) Connect an oscilloscope to the BNC connector on the monitor front panel.
Oscilloscope
VM-5C
(5) Record the monitor output waveform over the full speed range.
•
Mandatory
With an eddy current type transducer, the input waveform may deteriorate in the
high speed range due to the influence of variations of the set gap, etc. Therefore,
make sure to record the waveform over the full speed range.
(6) Determine the optimum trigger level value from the recorded waveform.
Example)
If the input waveform changes as shown below over the full
speed range, the optimum value for the trigger level is -18V.
Monitor input
voltage
Proper trigger level : -18V
Monitor output
-20V
High speed
Medium speed
Low speed
0V
Gap
(7) Display Trigger Level Set referring to "7-5 PARAMETER SETTING 2" on page 35.
(8) Fix the digit with the CHECK key and use the UP or DOWN key to specify the trigger level
value on the MEAS 2 display (Parameter Status). Finalize the input by pressing the SET key.
(9) Select pulse output and verify the output waveform referring to "7-12 MONITOR
OUTPUT/PULSE OUTPUT SELECTION" on page 51.
-48-
7.
PARAMETER SETTING
VM-5C
7-10 DETERMINATION OF HYSTERESIS
The hysteresis can be set by means of the jumper pins on the circuit board to 0.1V, 0.2V 0.5V or
1.0V. It is preset to 1.0V at the factory, but may have to be changed if any of the following
conditions apply.
•
The input signal level from the sensor (minimum level over the full speed range) is
lower than 3Vpk-pk.
•
The internal noise of the input signal from the sensor (maximum level over the full
speed range) is higher than 0.5Vpk-pk.
Setting Conditions
•
If you have to set the hysteresis, make sure that the following conditions are met.
Otherwise correct measurement is not possible.
Mandatory
Input Waveform
b: Max. Internal
Noise Value
Condition (1)
a-(hysteresis set value)>2V
Condition (2)
(hysteresis set value)-b>0.5V
a: Min. Value of
Input Signal
If these conditions cannot be met, the following measures must be taken.
To meet Condition (1) :
•
Select a narrow set gap and a high input signal amplitude.
•
Select a larger shaped speed detection target and a high input signal amplitude.
To meet Condition (2) :
•
Take measures against noise to reduce the internal noise level.
•
The higher the values in conditions (1) and (2), the higher the measuring stability.
We recommend that you make the values as high as possible.
-49-
7.
PARAMETER SETTING
VM-5C
7-11 HYSTERESIS SETTING
•
installed.
Mandatory
(2) The jumper pins for hysteresis setting are located on the trigger card on the main board.
S1
Connect the jumper in the desired position (marked 0.1V, 0.2V, 0.5V and 1.0V).
CH1
HYS. SET
0.1V
0.2V
0.5V
1.0V
VM-5
TRIGGER
CARD
•
J1
VM-5 TRIGGER CARD
Mandatory
(3) After verifying the set value, reinstall the monitor unit in the rack.
•
Mandatory
installed.
-50-
7.
PARAMETER SETTING
VM-5C
7-12 MONITOR OUTPUT / PULSE OUTPUT SELECTION
•
installed.
Mandatory
(2) The jumper pins for selecting between monitor and pulse output are located in the center of the
main board.
Connect the jumper to obtain the desired output (PUL or BUF).
PUL1
J305
BUF1
VM-5
TRIGGER
CARD
Detail
•
PUL
The internally shaped pulse signal is output through a buffer amplifier.
•
BUF
The input signal from the sensor is output through a buffer amplifier.
•
Mandatory
(3) After verifying the set value, reinstall the monitor unit in the rack.
•
Mandatory
installed.
-51-
7.
PARAMETER SETTING
VM-5C
7-13 ZERO SHIFT ADJUSTMENT
When the shaft revolution exceeds 1 rpm, the central value of the monitor's eccentricity input is
automatically zero shifted to the zero point (2.5V) of the A/D converter. This ensures continuous
measurement even if the shaft is substantially displaced in radial direction so that it comes to lie
outside the measurement range.
For this reason, manual zero shift is not always necessary, but if the zero point deviates
considerably from the default value, it may take some time until the monitor is ready to start
measurement. In this case, it is recommended to perform zero shift adjustment before measurement
according to the procedure described below.
•
Mandatory
When the alarm of the direct eccentricity is monitored, the following manual zero
shift adjustment shall be performed before measurement without fail.
MANUAL ZERO SHIFT ADJUSTMENT
Shift the direct eccentricity reference position (0%) to the zero point (2.5V) of the monitor's
built-in A/D converter, and set this point as the direct eccentricity zero point. Adjustment range is 0
to 100% of monitor range. (The recorder output is zero-shifted simultaneously.)
(1) Position the sensor so that the sensor set gap is as shown by B in the drawing.
(2) Display CH2 ZERO SHIFT ADJUSTMENT referring to "7-5 PARAMETER SETTING 2" on
page 35, and select direct eccentricity.
(3) Press the CHECK key for approx. 5 sec. A few seconds after search has been activated, the zero
point is shifted automatically to the zero point (2.5V) of the A/D converter.
(4) Press the SET key to display MEASURED VALUE ZERO ADJUSTMENT (for direct
eccentricity), then press the CHECK key. MEAS 2 will display zero, indicating that the direct
eccentricity value has been zero-shifted.
•
Make sure to stop the machine before carrying out manual zero shift adjustment.
•
If the zero point is shifted too much due to an inappropriate sensor set gap, it comes
to lie outside the linear range of the input transducer. This makes measurement
impossible and causes abnormal alarm output within the monitor range.
Set the sensor set gap so that zero point comes around the center of the linear
range of the input transducer.
Mandatory
Mandatory
•
C
Reference position of
direct eccentricity
A : Shafteccentricityrange
B : Sensorsetgap
C : Transducerlinearrange
B
Shaft
D : Input range of the monitor's
A/D converter
-50%
0.5
0.5
0 +50%
A
2.5
D
A/D converter input range before
4.5V
A/D converter input range after
4.5V
Zero point of A/D converter
-52-
8.
FUNCTIONAL DIAGRAM
VM-5C
8-1 BLOCK DIAGRAM
-53-
8.
FUNCTIONAL DIAGRAM
VM-5C
8-2 FUNCTIONAL BLOCK DIAGRAM
1
Input amplifier
Buffer amplifier for input signals.
2
LPF
Cuts off the high frequency range.
3
HPF (Enabled for VM-5K, 5U, 5B and 5M)
Cuts off the low frequency range.
4
Integrator (Enabled for VM-5U, 5B and 5M)
Integrates the input signal to convert acceleration to velocity or velocity to displacement.
5
Output amplifier
Buffer amplifier for monitor output from the BNC connector on the monitor front panel and to
the terminal block on the rear panel (VM-5G Single Unit Instrument Rack, VM-5Y Relay
Module Unit).
6
Integrator (Enabled for VM-5T, 5D, 5N, 5E, 5A, 5L, 5J and 5C)
Integrates the PWM (pulse width modulation) signal, and converts it to a DC voltage
proportional to the measured value.
7
Zero shift
(Enabled for VM-5T, 5D, 5N, 5E, 5A, 5L and 5J. For VM-5C, only enabled on CH2.)
The input signal is zero-shifted by the DC voltage output from the integrator.
8
Programmable Gain Amplifier
Converts the input signal to the voltage level required by the detection circuit.
9
Detection circuit (Enabled for VM-5K, 5U, 5B and 5M)
Detects the input signal, and converts it to a DC voltage proportional to the vibration.
• P-P detection
Peak-to-peak detection
• AVE detection
Average value detection
• RMS detection (option)
Effective value detection
-54-
8.
FUNCTIONAL DIAGRAM
VM-5C
10 Level adjustment
Converts the DC input voltage to the level required by the A/D converter.
11 A/D
10-bit A/D converter for conversion of analog to digital signals.
12 Counter (Enabled for VM-5C, 5S, and 5R)
Counts the pulse input from the trigger card.
13 CPU
16-bit CPU used.
14 PWM
Performs pulse width modulation in proportion to the measured value.
15 SIO
Handles internal communication with the VM-5P1,2 Communication/Phase Marker Unit.
16 PIO
Inputs signals for key operations and remote contact input, and outputs signals for driving the
LCD cards and alarm relays.
17 Integrator
Integrates the PWM (pulse width modulation) signal, and converts it to a DC voltage
proportional to the measured value.
18 Output amplifier
Converts the output to the 1 to 5VDC or 4 to 20mA signal required for the recorder, etc.
19 Filter card (option)
Available as option, if a still sharper filter performance is required.
20 Trigger card (Enabled for VM-5C, 5S, and 5R)
Converts the input signal to the pulse waveform.
21 Isolated output card, voltage conversion card (option)
(0 to -10VDC, 0 to +10VDC, 0 to -5VDC, 0 to +5VDC)
•
Isolated output card :
This isolated output card is used for isolation from other circuits.
•
Recorder option output card :
A recorder option output card for applications where an other than standard recorder output
is required.
-55-
9.
MAINTENANCE
VM-5C
9-1 RECOMMENDED MAINTENANCE EQUIPMENT
The recommended maintenance equipments listed below should be used to perform the procedures
in this manual.
•
Digital Multimeter (DMM)
Agilent Technologies 3466A or equivalent
•
DC voltage generator
Yokogawa Electric Corporation 2554 or equivalent
•
Tester
•
For alarm output wiring proceed as described in the instruction manuals for the
VM-5G Single Unit Instrument Rack and VM-5Y Relay Module Unit used in
Mandatory
combination with this monitor unit.
•
electric shock.
Warning
•
Input the signal for the phase marker to CH1 and the signal for eccentricity
measurement to CH2.
•
Note that the eccentricity pk-pk value will not be indicated, if the trigger level for CH1
is not set properly.
•
Mandatory
Set the trigger mode to Auto Trigger for maintenance tests, but remember to return it
to Manual Trigger after the tests.
-56-
9.
MAINTENANCE
VM-5C
9-2 VERIFICATION OF OK (INPUT ABNORMAL ALARM) OPERATION
This clause is used to test the display and contact output of OK (INPUT ABNORMAL ALARM).
•
circuit between the alarm contacts and the connected system if necessary.
Mandatory
Warning
Since OK (INPUT ABNORMAL ALARM) will be output during the test, open the
•
Set each Alarm Bypass Switch to “OFF” position.
•
The machine is not protected during operation test.
•
To verify OK ALARM contact operation on one channel, none of the other channels
must be in alarm output condition, except when using the VM-5Y3,4,5,6 Relay
Module Unit.
•
ALERT alarm operates after the specified alarm delay time has elapsed.
9-2-1 INTERCONNECTION (ex. VM-5G SINGLE UNIT INSTRUMENT RACK)
Connect a function generator to the CH1 input terminal and a DC voltage generator to the CH2
input terminal of the VM-5G Single Unit Instrument Rack and check the circuit of OK ALARM
contact points.
•
Connect to the input/output terminals of the channel under operation test.
•
Refer to “4. INTERCONNECTION” on page 3.
IN
IN
COM.
COM.
Function generator
DC voltage generator
NC
OK
NO
A1 B1
IN
IN
A2 B2
COM COM
A3 B3
PWR PWR
A4 B4
REC REC
A5 B5
REC- REC
A6 B6
BUF BUF
A7 B7
COM COM
B8
A8
NC
NC
B9
A9
DAN
DAN
B10
A10
NO
NO
B11
A11
NC
NC
B12
A12
ALE
ALE
B13
A13
NO
NO
B14
A14
SEQ
NC
B15
A15
COM
OK
B16
A16
P-S
NO
B17
A17
RES
L1
B18
A18
COM
L2
B19
A19
FLT
FG
Tester
VM-5G Single Unit Instrument Rack
Input/output terminal block
-57-
9.
MAINTENANCE
VM-5C
9-2-2 VERIFICATION OF OPERATION
(1) OK (INPUT ABNORMAL ALARM) limit values
The OK (INPUT ABNORMAL ALARM) limit values vary with the type of the transducer.
The set voltages given in the table below apply in the case that the monitor is calibrated for the
sensitivity of the transducer to the specific target.
A situation where the input voltage from transducers to monitors lies outside the LOW - HIGH
limit value range is interpreted as INPUT ABNORMAL by the OK (INPUT ABNORMAL
ALARM) function and will cause alarm output.
The limit values for CH1 (phase) must lie LOW (-1.4VDC).
Table of OK (INPUT ABNORMAL ALARM) limit values
Input transducer
VK-202A
VK-302P
VK-452A
VK-602P
LOW limit
HIGH limit
(VDC)
(VDC)
-1.4
-18.8
---
-1.4
-17.0
Barrier used
-1.4
-18.0
---
-1.4
-15.4
Barrier used
-1.4
-20.0
---
-1.4
-17.6
Barrier used
-1.4
-17.6
---
-1.4
-16.4
Barrier used
Note
Target material
SCM440
(2) Trigger Mode selection
Set the Trigger Mode to Auto Trigger referring to "7-8 TRIGGER MODE SELECTION" on
page 47.
(3) Reference Voltage Input
CH1 (phase): Use the function generator to apply a frequency equivalent to 6rpm and a square
wave with an amplitude of 2Vpk-pk.
Make the offset voltage -4VDC.
CH2 (eccentricity): Apply -9VDC with the DC voltage generator.
(4) Testing CH1 OK (input abnormal alarm) LOW limit operation
Apply the reference voltage to CH1 and CH2.
When the POWER ON TIMER period has elapsed, adjust the offset voltage of the function
generator to a value in the neighborhood of the LOW limit value.
Verify that the OK (input abnormal alarm) function operates at the point where the voltage
exceeds the LOW limit value. At the same time, test the OK contact points for connection.
Next apply the reference voltage and verify that OK (input abnormal alarm) is released when
the key is reset after more than 15 sec. (in self-holding alarm reset mode).
In auto-reset mode, OK is reset automatically after approx. 15 sec.
-58-
9.
MAINTENANCE
VM-5C
(5) Testing CH2 OK (input abnormal alarm) HIGH limit operation
Adjust the voltage of the DC voltage generator until it is close to the HIGH limit value.
exceeds the HIGH limit value. At the same time, test the OK contact points for connection.
the key is reset after more than 15 sec. (in self-holding alarm reset mode).In auto-reset mode,
OK is reset automatically after approx. 15 sec.
(6) Testing CH2 OK (input abnormal alarm) LOW limit operation
Adjust the voltage of the DC voltage generator until it is close to the LOW limit value.
exceeds the LOW limit value. At the same time, test the OK contact points for connection.
the key is reset after more than 15 sec. (in self-holding alarm reset mode).
In auto-reset mode, OK is reset automatically after approx. 15 sec.
-59-
9.
MAINTENANCE
VM-5C
9-3 VERIFICATION OF DANGER (DAN)/ALERT (ALE) ALARM OPERATION
This clause is used to test the display and contact output of DANGER (DAN)/ALERT (ALE)
alarm.
•
Mandatory
•
•
Warning
Since DANGER (DAN)/ALERT (ALE) alarm will be output during the test, open the
circuit between the alarm contacts and the connected system if necessary.
Set each Bypass Switch to “OFF” position.
When mounting this monitor unit in VM-5H3 or VM-5W1 Instrument Rack, set the
DANGER Bypass switch to “DISABL” position.
•
•
DANGER (DAN)/ALERT (ALE) alarm operates after the specified alarm delay time
has elapsed.
Connect a function generator to the input/output terminals of the VM-5G Single Unit Instrument
Rack and test for connection between the DANGER (DAN) / ALERT (ALE) alarm contact output
terminals.
•
•
IN
COM.
IN
COM.
Function generator
NC
DAN
NO
NC
ALE
NO
Tester
A1 B1
IN
IN
A2 B2
COM
COM
A3 B3
PWR PWR
A4 B4
REC REC
A5 B5
REC- REC
A6 B6
BUF BUF
A7 B7
COM COM
B8
A8
NC
NC
B9
A9
DAN
DAN
B10
A10
NO
NO
B11
A11
NC
NC
B12
A12
ALE
ALE
B13
A13
NO
NO
B14
A14
SEQ
NC
B15
A15
COM
OK
B16
A16
P-S
NO
B17
A17
RES
L1
B18
A18
COM
L2
B19
A19
FG
FLT
Tester
-60-
9.
MAINTENANCE
VM-5C
9-3-2 VERIFICATION OF OPERATION (for eccentricity pk-pk)
page 47.
(2) Input of Reference Voltage
CH2 (eccentricity): Use the function generator to apply the reference sine wave voltage
indicated on the nameplate and a frequency equivalent to 6rpm.
Perform zero shift adjustment if necessary.
(3) Verification of Alarm Operation
Apply the reference voltage to CH1 and CH2. (The reference sine wave applied to CH2 should
then be 0mVrms.) When the POWER ON TIMER period has elapsed, gradually raise the sine
wave voltage applied with the function generator.
Verify that ALERT (ALE) alarm is output after elapse of the preset alarm delay time, when the
input value exceeds the ALERT (ALE) alarm set value. At the same time, verify operation by
testing the ALERT (ALE) alarm contact points for connection with a tester. Continue to
increase the input voltage.
Verify that DANGER (DAN) alarm is output after elapse of the preset alarm delay time, when
the input exceeds the DANGER (DAN) alarm set value. At the same time, verify operation by
testing the DANGER (DAN) alarm contact points for connection with a tester.
(4) Alarm Reset
Once the DANGER alarm set value has been exceeded, gradually decrease the reference sine
wave voltage. When the input voltage is below the DANGER (DAN) alarm set value, reset to
verify that ALERT (ALE) alarm output is released (in self-holding alarm reset mode).
In auto-reset mode, the alarm is reset automatically.
Continue to decrease the input voltage. When the input voltage is below the ALERT (ALE)
alarm set value, reset to verify that ALERT (ALE) alarm is released (in self-holding alarm
reset mode).
-61-
9.
MAINTENANCE
VM-5C
6-3-3 VERIFICATION OF OPERATION (for direct eccentricity)
page 47.
CH2 (eccentricity): Use the function generator to apply a value within the H-ALERT and
L-ALERT alarm set range.
(3) Verification of Alarm Operation
Apply the reference voltage to CH1 and CH2. When the POWER ON TIMER period has
elapsed, gradually raise the voltage applied with the function generator.
Verify that ALERT (ALE) alarm is output after elapse of the preset alarm delay time, when the
input value exceeds the ALERT (ALE) alarm set value. At the same time, verify operation by
testing the ALERT (ALE) alarm contact points for connection with a tester. Continue to
increase the input voltage.
Verify that DANGER (DAN) alarm is output after elapse of the preset alarm delay time, when
the input exceeds the DANGER (DAN) alarm set value. At the same time, verify operation by
testing the DANGER (DAN) alarm contact points for connection with a tester.
•
Verify the operation of both HIGH and LOW alarm in the same manner.
(4) Alarm Reset
Once the DANGER (DAN) alarm limit value has been exceeded, gradually decrease the input
voltage of the channel under test.
When the input voltage is below the DANGER (DAN)
alarm set value, reset to verify that ALERT (ALE) alarm output is released (in self-holding
alarm reset mode).
Continue to decrease the input voltage. When the input voltage is below the ALERT (ALE)
alarm set value, reset to verify that ALERT (ALE) alarm is released (in self-holding alarm
reset mode).
•
Verify the operation of both HIGH and LOW alarm in the same manner.
-62-
9.
MAINTENANCE
VM-5C
9-4 VERIFICATION OF MEASURED VALUE AND RECORDER OUTPUT
This clause is used to test the measured value and recorder output.
•
Since DANGER(DAN)/ALERT(ALE)/OK alarm will be output during the test, open
the circuit between the DANGER(DAN)/ALERT(ALE)/OK alarm contacts and the
Mandatory
connected system if necessary.
•
Bypass DANGER alarm output by setting the DANGER Bypass Switch to "ON"
position.
•
When mounting this monitor unit in the VM-5H3 or VM-5W1 Instrument Rack, set
the DANGER Bypass switch to “ENBL” position.
•
Warning
Connect a function generator to the input/output terminals of the VM-5G Single Unit Instrument
Rack and measure the recorder output with a DMM.
•
•
IN
COM.
Function generator
IN
COM.
REC+
REC-
DMM
A1 B1
IN
IN
A2 B2
COM COM
A3 B3
PWR PWR
A4 B4
REC REC
A5 B5
REC- REC
A6 B6
BUF BUF
A7 B7
COM COM
B8
A8
NC
NC
B9
A9
DAN
DAN
B10
A10
NO
NO
B11
A11
NC
NC
B12
A12
ALE
ALE
B13
A13
NO
NO
B14
A14
SEQ
NC
B15
A15
COM
OK
B16
A16
P-S
NO
B17
A17
RES
L1
B18
A18
COM
L2
B19
A19
FLT
FG
-63-
9.
MAINTENANCE
VM-5C
9-4-2 VERIFICATION OF OPERATION (for eccentricity pk-pk)
page 47.
(3) Verification of Measured Value
When the POWER ON TIMER period has elapsed, input the reference sine wave voltage from
the function generator to CH2 (eccentricity) in 20% increments, and verify that the measured
value (eccentricity pk-pk) displayed on the LCD and the input value agree within the allowable
range.
(4) Verification of Recorder Output
Measure the recorder output with a DMM, and verify that it agrees with the input value from
the function generator and lies within the tolerance range.
9-4-3 VERIFICATION OF OPERATION (for direct eccentricity pk-pk)
CH1 (phase): Apply -4VDC with the function generator.
CH2 (eccentricity): Use the function generator to apply the 0% value indicated on the
nameplate.
(2) Verification of Measured Value
When the POWER ON TIMER period has elapsed, use the function generator to input to CH2
(eccentricity) a DC voltage corresponding to the -50% and 50% values indicated on the
nameplate in 20% increments, and verify that the measured value (direct eccentricity)
displayed on the LCD and the input value agree within the allowable range.
(3) Verification of
Recorder Output
Use the function generator to input to CH2 (eccentricity) a DC voltage corresponding to the
-50% and 50% values indicated on the nameplate in 20% increments, and verify that the value
measured for the recorder output (direct eccentricity) and the input value agree within the
allowable range.
-64-
9.
MAINTENANCE
VM-5C
9-5 ADJUSTMENT OF MEASURED VALUE AND RECORDER OUTPUT ZERO SPAN
This clause is used to adjust the measured value and recorder output.
•
Since DANGER(DAN)/ALERT(ALE)/OK alarm will be output during the test, open
the circuit between the DANGER(DAN)/ALERT(ALE)/OK alarm contacts and the
Mandatory
connected system if necessary.
•
Bypass DANGER alarm output by setting the DANGER Bypass Switch to "ON"
position.
•
When mounting this monitor unit in the VM-5H3 or VM-5W1 Instrument Rack, set
the DANGER Bypass switch to “ENBL” position.
•
Warning
Connect a function generator to the input terminal of the VM-5G Single Unit Instrument Rack and
measure the recorder output with a DMM.
•
Connect to the input/output terminals of the channel being adjusted.
•
IN
COM.
Function generator
IN
COM.
REC+
REC-
DMM
A1 B1
IN
IN
A2 B2
COM COM
A3 B3
PWR PWR
A4 B4
REC REC
A5 B5
REC- REC
A6 B6
BUF BUF
A7 B7
COM COM
B8
A8
NC
NC
B9
A9
DAN
DAN
B10
A10
NO
NO
B11
A11
NC
NC
B12
A12
ALE
ALE
B13
A13
NO
NO
B14
A14
SEQ
NC
B15
A15
COM
OK
B16
A16
P-S
NO
B17
A17
RES
L1
B18
A18
COM
L2
B19
A19
FLT
FG
-65-
9.
MAINTENANCE
VM-5C
9-5-2 ADJUSTMENT
page 47.
wave with an amplitude of 2V pk-pk.
(3) Recorder output zero adjustment
Apply the reference voltage to CH1 and CH2. When the POWER ON TIMER period has
elapsed, display RECORDER OUTPUT (for eccentricity pk-pk) ZERO ADJUSTMENT
referring to page 35 (7-5 PARAMETER SETTING 2), and make the reference sine waveform
input voltage from the function generator 0mVrms.
Then use the UP, DOWN and CHECK
keys to adjust the recorder output measured with the DMM to 0% of output value.
Finalize the adjustment by pressing the SET key.
Adjustable range is ±5% of monitor range.
•
0% output is 1V if the recorder output specifications is 1 to 5VDC, or 4mA if it is 4 to
20mADC.
•
MEAS 2 indicates the measured value.
(4) Recorder output span adjustment
Display RECORDER OUTPUT (for eccentricity pk-pk) SPAN ADJUSTMENT referring to
page 35 (7-5 PARAMETER SETTING 2), and make the reference sine wave input voltage
from the function generator 100%.
Then use the UP, DOWN and CHECK keys to adjust the
recorder output measured with the DMM to 100% of output value.
•
100% output is 5V if the recorder output specifications is 1 to 5VDC, or 20mA if it is
4 to 20mADC.
•
-66-
9.
MAINTENANCE
VM-5C
9-5-3 ADJUSTMENT (for direct eccentricity)
CH1 (phase): Apply -4VDC with the function generator.
CH2 (eccentricity): Use the function generator to apply the 0% value indicated on the
nameplate.
(2) Zero adjustment
When the POWER ON TIMER period has elapsed, adjust referring to "7-13 ZERO SHIFT
ADJUSTMENT" on page 52.
(3) Measured value span adjustment
Display MEASURED VALUE SPAN ADJUSTMENT (direct eccentricity) on the unit's LCD
display referring to page 35 (7-5 PARAMETER SETTING 2), and adjust the input voltage
from the function generator to CH2 (eccentricity) to the 50% DC voltage value indicated on
the nameplate.
Then use the UP, DOWN and CHECK keys to adjust the MEAS 2 display to
100% of the meter scale.
(4) Recorder output zero adjustment
Display RECORDER OUTPUT (for direct eccentricity) ZERO ADJUSTMENT referring to
page 35 (7-5 PARAMETER SETTING 2), and make the input voltage from the function
generator -50%.
Then use the UP, DOWN and CHECK keys to adjust the recorder output
measured with the DMM to 0% of output value.
Adjustment range is ±5% of monitor range.
•
0% output is 1V if the recorder output specifications is 1 to 5VDC, or 4mA if it is 4 to
20mADC.
•
(5) Recorder output span adjustment
Display RECORDER OUTPUT (for direct eccentricity) SPAN ADJUSTMENT referring to
page 35 (7-5 PARAMETER SETTING 2), and make the input voltage from the function
generator 50%.
Then use the UP, DOWN and CHECK keys to adjust the recorder output
measured with the DMM to 100% of output value.
Adjustment range is ±5% of monitor range.
•
100% output is 5V if the recorder output specifications is 1 to 5VDC, or 20mA if it is
4 to 20mADC.
•
-67-
9.
MAINTENANCE
VM-5C
9-6 REPLACEMENT OF ALUMINUM ELECTROLYTIC CAPACITOR
•
Aluminum electrolytic capacitors are used on the main board, which have a limited
life. Their service life varies according to the conditions of use, but for preventive
maintenance it is recommended to check the capacitors listed below in 5-year cycles
for characteristic deterioration and replace them as necessary.
Replacement by SST is recommended.
Main Board
Component
Type
Manufacturer
Aluminum electrolytic capacitor
C206, C207, C208
UPJ1E101M
Nichicon
Type
Manufacturer
UPJ1C471M
Nichicon
Q’ty
3
Isolation Card
Component
Aluminum electrolytic capacitor
C1
•
Mandatory
Q’ty
1
To remove or install the monitor, proceed according to the instruction manual of the
instrument rack. Failure to turn off the power before pulling the monitor unit out of, or
inserting it into the rack will result in serious damage and accidents.
•
Do not touch the main board with bare hands.
Prohibition
-68-
9.
MAINTENANCE
VM-5C
9-7 REPLACEMENT OF LCD UNIT
•
An LCD unit is used on the face plate, which have a limited life. Their service life
varies according to the conditions of use, but for preventive maintenance it is
recommended to check the LCD listed below in 5-year cycles for characteristic
deterioration and replace them as necessary. Replacement by SST is recommended.
Component
Type
LCD unit with Acrylic cover
Q’ty
SHINKAWA Sensor Technology, Inc.
1
•
To remove or install the monitor, proceed according to the instruction manual of the
instrument rack. Failure to turn off the power before pulling the monitor unit out of, or
inserting it into the rack will result in serious damage and accidents.
•
Do not touch the main board and LCD unit board with bare hands.
Caution
Prohibition
1902BHS
Manufacturer
1 Pull out the monitor unit.
2 Disconnect the connector of the flat cable connecting the LCD unit to the main board.
Unlock two locks at the top and bottom of the connector.
Lock
Connector
Lock
Main board
(soldered side)
Monitor unit
3 Take out three screws fixing the LCD unit to the face plate. The acrylic covers and sleeves
will come off at the same time.
LCD unit
Acrylic cover
Sleeve
Main board
(soldered side)
Monitor unit
4 Replace the LCD unit by reversing the above sequence.
•
Confirm that connector is connected firmly.
Caution
-69-
9.
MAINTENANCE
VM-5C
9-8 LCD CONTRAST ADJUSTMENT
•
The LCD contrast volume is located on the back of the face plate (LCD Unit). Pull
out the face plate referring to “7. PARAMETER SETTING” on page 21.
Mandatory
•
Prohibition
Use a small flat blade screwdriver to set the LCD contrast volume (VR1) on the LCD unit to the
desired contrast level.
VR 1
Flat blade screwdriver
Back of face plate
•
LCD Unit
Be noted that the characteristic of LCD contrast adjustment is as follows.
Contrast
1 turn
-70-
9.
MAINTENANCE
VM-5C
9-9 LCD BACKLIGHT ADJUSTMENT
•
The LCD backlight volume is located on the back of the face plate (LCD Unit). Pull
out the face plate referring to “7. PARAMETER SETTING” on page 21.
Mandatory
•
Prohibition
Use a small flat blade screwdriver to set the LCD backlight volume (VR2) on the LCD unit to the
VR 2
Flat blade screwdriver
LCD Unit
Back of face plate
-71-
VR 1
desired brightness level.
10.
TROUBLESHOOTING
VM-5C
10-1 LCD DISPLAY CONTENT ABNORMAL
Start
Display is abnormal.
Display is blank.
Is power
supply on?
NO
Turn on power supply.
NO
Connect correctly.
NO
Insert Main board
firmly by pushing
Main board frame.
NO
Insert LCD connector
firmly.
NO
Perform LCD
contrast adjustment.
YES
Are
connections to
power supply terminals
correct?
YES
Turn on power supply
again.
Is Main board
inserted firmly to
the rack?
YES
Is LCD
connector inserted
firmly?
YES
Is display normal?
YES
OK
Is display normal?
YES
OK
-72-
NO
Repair VM-5.
10.
TROUBLESHOOTING
VM-5C
10-2 OK DISPLAY FLASHES
Start
Wait approx.15 sec.,
then reset key.
Did flashing stop?
YES
OK
NO
Insert Main board
firmly by pushing
Main board frame.
NO
Is Main board
inserted firmly to
the rack?
YES
Run self-diagnosis
(press CHK key).
Diagnostic findings
OK?
NO
Display
Sensor wire breakage, sensor gap
too lage.
Display
Sensor short-circuit, sensor gap too
small.
YES
Repair VM-5.
Input is outside input range of built-in
A/D converter (H or 5V end).
Display
Check input voltage of
monitor.
Perform zero shift
adjustment.
Input is outside input range of built-in
Display
A/D converter (L or 0V end).
-73-
Check input voltage of
monitor.
Perform zero shift
adjustment.
10.
TROUBLESHOOTING
VM-5C
10-3 MEASURED VALUE ABNORMAL
Start
Check sensor set gap.
Is gap voltage
normal?
NO
Check transducer.
YES
Is Main board
inserted firmly to
the rack?
Check signal cable and
connection.
NO
Insert Main board
firmly by pushing
Main board frame.
NO
Again set trigger level.
NO
Perform zero shift
adjustment.
YES
Noise
countermeasures.
YES
Is trigger
Properly set?
YES
Zero shift
Adjustment
performed?
YES
Noise mixed in?
Check sensor, cable and
driver connection.
NO
Repair VM-5.
-74-
10.
TROUBLESHOOTING
VM-5C
10-4 OK (INPUT ABNORMAL ALARM) DOES NOT OPERATE
Start
Is channel bypass
in operation?
NO
YES
Repair VM-5.
Release channel
bypass.
10-5 ALERT (ALE) ALARM DOES NOT OPERATE
Start
Is sequence
circuit in
operation?
NO
YES
Release sequence
circuit.
Is alarm
limit value set
within measurement
range?
YES
Repair VM-5.
-75-
NO
Set within
measurement range.
10.
TROUBLESHOOTING
VM-5C
10-6 DANGER (DAN) ALARM DOES NOT OPERATE
Start
Is sequence
circuit in peration?
NO
YES
Release sequence
circuit.
Is alarm
limit value set
within measurement
range?
NO
Set within
measurement range.
YES
Is DANGER
bypass in operation?
NO
Repair VM-5.
YES
Release DANGER
bypass.
YES
DANGER alarm in
operation?
NO
YES
OK
10-7 ERRONEOUS OPERATION OF DANGER (DAN) / ALERT (ALE) ALARM
Start
Erroneous operation
due to noise.
Noise
countermeasures.
Increase alarm delay
time.
-76-
10.
TROUBLESHOOTING
VM-5C
10-8 NO RECORDER OUTPUT
Start
Are output
terminals connected
correctly?
NO
Connect correctly.
YES
Repair VM-5.
-77-
Warranty
The warranty period for the delivered product shall be 3 years from the date of delivery from
our factory. But the warranty period for the special order product and software shall be 1 year,
and for the repairing parts shall be 6 months. In the event that the delivered product develops
any defects within the warranty period for which Shinkawa Electric is liable, the defective part
will be replaced or repaired in our factory at our own expense.
In the event that an engineer needs to be dispatched for repair purposes during the warranty
period, travel expenses for the said engineer will be changed in accordance with the above
item. The cost of repair will be borne by Shinkawa Electric.
However, the following are excluded from our warranty:
(1) Any defects due to improper handling or operation by the user.
(2) Any defects, the case of which is not attributable to Shinkawa Electric.
(3) Any modifications or repairs made by others then Shinkawa Electric or persons
commissioned by Shinkawa Electric.
(4) Any handling, storage and operation under severe environmental conditions that exceed
the design specifications.
(5) Any defects due to fire, flood, earthquake, lightning and other Acts of God.
(6) The consumables
(7) Other defects considered not to be attributable to Shinkawa Electric.
This warranty applies exclusively to the delivered product units.
Shinkawa Electric will not be held liable for consequential damage caused either directly or
indirectly through a defect of the delivered product.
The warranty period and scope of machinery and equipment made by manufacturers other
than Shinkawa Electric shall be in accordance with the conditions of the respective
manufacturer, regardless of the provisions made above.
Hiroshima Factory
4-22 Yoshikawa-kogyodanchi, Higashi-hiroshima 739-0153, Japan
Tel. +81-82-429-1118 Fax. +81-82-429-0804
[Field support & Repair Dept] E-Mail : [email protected]

vm-5 series monitor model vm-5c eccentricity

Transcription

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