Mobile Technology Cab Suspension FDE2

Mobile Technology
Cab Suspension
FDE2-...
1. DESCRIPTION
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1.1. APPLICATIONS
zz Agricultural machinery
zz Construction machinery
zz Special vehicles
1.2. GENERAL
FDE2 is an intelligent
suspension strut for cab
suspension on virtually all
vehicles. The strut reduces the
vibrations which cause driver
strain, without affecting the ride
and operability.
The distinctive feature of this
unit lies in the integration of two
components, the suspension and
the damper, into the strut.
The suspension accumulator
must be sized according to the
requirements of the vehicle in
order to achieve the best system
overall.
1.2. Advantages
zz Greatly reduced acceleration in
the vertical direction
zz Reduced roll and pitch
zz Reduction in movement of the
driver relative to the instruments
zz Improved comfort
zz Contributes to Health & Safety
at Work compliance
2.
2.1.
TECHNICAL SPECIFICATIONS
General data
Mounting position
Optional, must not be subjected to transverse forces
Ambient temperature range
-20 °C to +60 °C
Safe working load range
150 kg – 300 kg per element
Surface protection
Primed, coating thickness approx. 35 µm
Piston rod, hard-chrome plated,
Corrosion protection to ISO 9227 ≥ 72 hours
Evaluation according to ISO 10289 Class 10
2.2 HYDRAULIC SPECIFICATIONS
Hydraulic connection
ISO 6149 M12x1.5
Operating pressure
210 bar
Type of fluid
Mineral oil (HL, HLP);
Other fluids on request
Temperature range of operating fluid
-20 °C to +80 °C
For versions without proportional valve
For versions with proportional valve
Class 21/19/16 to ISO 4406
Class 18/16/13 to ISO 4406
2.3
ELECTRICAL SPECIFICATIONS (for versions with linear measurement system)
Supply voltage
12 VDC +/- 25 %
Maximum current
1.8 A, 100% duty cycle at max. 50 °C
Output signal of linear position system
0.1 – 4.9 V
Protection class
IP 65
2.4.
Circuit diagrams
or
or
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Passive model
2
Semi-active model
2.5.
Characteristics
The innovative feature of this unit lies in the
integration of two components, the suspension
and the damper, into the strut.
2.5.1 Passive model
With its low-friction suspension cylinder specially
developed for the application, the suspension is able
to react extremely quickly. Thanks to the integrated
linear measurement system and the level control, the
full spring travel is always available.
Co-ordination of the spring curve and the damping
produces a suspension system which is adapted to
the vehicle.
2.5.2 Semi-active cab suspension
Up to now, vehicle builders had to define a setting
for spring and damper at the factory which usually
resulted in a compromise.
The FDE from HYDAC does away with the necessity
to compromise. The low frequency spring design
provides the highest level of ride comfort, whilst the
damping rate can simultaneously be adjusted to the
load condition of the vehicle.
2.6 Mechanical load capacity and safety information
Important:
Bump-stop impacts must not be absorbed by
the suspension unit.
For on-board ROPS and FOPS
approvals, mechanical
bump-stop buffers must be provided.
The suspension units must be installed
such that they are not subject to transverse
forces.
2.5.2.1Damping characteristic diagram for semi-active version
2.5.2.2 Pin connections for semi-active model (Deutsch connection DTM6P-BT)
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Not used
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3.
Model code
(also order example)
FDE2 - 1 0 - 075 - 30 - D18 - S09- B00 - 00 - 0
Suspension damping unit
2nd generation
Damping
1 = single-stage (fixed)
2= two-stage (switchable)*
3= variable (proportional)
Linear measurement system
0 = not included
1= included
Accumulator volume
V [cm3 ]
Pre-charge pressure
p0 [bar ]
Orifice size for pressure reducing valve
[mm/10 ]
00 = without orifice
Orifice size for accumulator
[mm/10 ]
00 = without orifice
Orifice size for bypass*
[mm/10 ]
00 = without orifice
Voltage of coil
[V ]
0 = no electrical connection
Modification
0 = no modification
* on request only
Force-travel curve (for illustrative purposes)
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4
Piston travel [mm]
load 300 kg
P0 80 bar
accumulator 0.075 l
Force at the cylinder [KN]
Cylinder pressure [bar]
Force at the cylinder [KN]
load 150 kg
P0 40 bar
accumulator 0.075 l
Cylinder pressure [bar]
4.
Piston travel [mm]
Dimensions
Model shown (according to model code):
FDE2-1-0-50-30-D18-S09-B00-00-0
Accumulator connection:
P0 = 38 bar and 30 bar
in E2 version.
All others in E1 version.
For other versions in
E2 quantity-dependent
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5.
5
Model shown (according to model code)
FDE2-3-1-75-38-D00-S00-B00-12-0
Accumulator connection:
P0 = 38 bar and 30 bar
in E2 version.
All others in E1 version.
For other versions in
E2 quantity-dependent
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6.
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Note
The information in this brochure relates to the operating
conditions and applications described.
For applications or operating conditions not described,
please contact the relevant technical department.
Subject to technical modifications.
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Notes
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