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Electronic Suspended Pedal
The WM-540 electronic suspended pedal is firewall
mounted and designed to provide an electrical signal to
an engine control module in response to the operator's
demand for engine power.
The WM-540 is equipped with a Hall-effect, non-contact
sensor that can be programmed for analog output and/or
integrated switches. The electronics are IP67 sealed and
highly EMI resistant (SAE J1113). In addition, the unit can
be customized with contact or PWM output sensors.
The robust design includes corrosion resistant cast
aluminum housing and a coated steel mounting bracket.
Brackets can be modified to meet different mounting
requirements.
Standard bent steel lever rods can accommodate a
variety of pedal placements, and a customized 3/16” steel
plate lever is available for high static load requirements.
SPECIFICATIONS
PRODUCT LIFE
Full Travel Cycles
5,000,000
ELECTRONICS
Seal Integrity
EMI
Electronics IP67 sealed (IEC 60529)
SAE J1113 Compliant
ELECTRICAL
Operating Voltage
Output Signal
5V and 12V-24V
Dual APS, Dual PWM, APS, PWM, APS/IVS
PEDAL ANGLE
Degrees
Operating force
19.5° Angular Rotation
Neutral = 55N, Full Travel = 75N
MECHANICAL
Static Load
Vibration
1500N
3 hour, 3-axis, random broadband up to 4g
ENVIRONMENTAL
Operating Temp Range
Storage Temp Range
Humidity
Sand/Dust
-40°C to 85°C
-40°C to 85°C
95% RH for 120 hours, 27°C to 75°C
Tested to SAE J1455
MATERIALS
Foot treadle & base plate
Treadle cover
Body castings
Corrosion Resistant Plated Steel
NBR Rubber
Die-cast Aluminum
Industrial Group
MECHANICAL DIMENSIONS (mm)
TYPICAL OUTPUT CHARACTERISTICS (other outputs are available)
© 2014 Curtiss-Wright. All rights reserved. Specifications are subject to change without notice.
All trademarks are property of their respective owners.
USA
Portland
Oregon
T: +1.509.684.8600
F: +1.503.684.3879
[email protected]
www.cw-industrialgroup.com
Europe
Christchurch
United Kingdom
T: +44.1425.271444
F: +44.1425.272655
[email protected]
www.cw-industrialgroup.com
WM5
Asia
Shanghai
China
T: +86.213.3310670
40-11/14
[email protected]
www.cw-industrialgroup.com
WCS-131507
Williams Customer Specification
Original Release: 01/25/08
Original Project #: 328
•
1.0
Compliant with SEE SECTION 8.0
Features:
•
•
•
•
•
•
•
•
•
•
•
2.0
19.5° Angular Rotation
Single Ratiometric APS output
Isolated APS/IVS functions
Form C IVS output
IP66 Sealed Sensor
+5V Operation
-40°C to + 85°C Operation
Interfaces with Metripak 150-series
Connector #12066317 with terminal
pins #12103881-L
Protected against Electrical
Misconnection (indefinite duration)
Steel Rod Lever Arm
Steel Mounting Bracket
Connector Pin Configuration
Applications:
•
•
•
3.0
The Celect ESPA is a firewallmounted Electronic Suspended Pedal
Assembly.
The application is for Diesel Trucks
and Buses.
Commonly applied to the following
engines:
• Cummins
• Detroit Diesel III, IV, & V
• International
• Mack
• MB NAFTA
A
B
C
D
E
F
View Facing Connector End
Pin
A
B
C
Function
APSOUT
APSGND
APSVCC
Pin
D
E
F
Function
IVS2NO
IVS1NC
IVSCOM
Description:
The Celect ESPA is designed to provide an electrical signal to the engine control module in
response to the operator’s demand for engine power. A sensor provides a linear voltage output
proportional to the pedal angular displacement. It also provides an independent switched output
that closes when the sensor is in the IDLE POSITION and a second output that closes ON
THROTTLE ACTIVE.
PROCEDURE NAME:
DEPT:
030
Williams Customer Specification Form
DOCUMENT NUMBER:
QEMS Representative
WQF-030-021
Mary Knight
REVISION LEVEL:
Process Owner
1
A
DATE EFFECTIVE:
Michael Cooper
11/13/07
DAF#
Department Manager
Scott Thiel
00396
WCS-131507
Absolute Maximum Electrical/Mechanical Ratings
APS Circuit:
Supply Voltage (VCC1, VCC2)
Output Current (APS1, APS2 output)
Short Circuit Duration – to GND or VCC
+/-5.5V
+/-10 mA
Indefinite
IVS Circuit:
Supply Voltage
Output Current (IVS output)
Operating Temperature
Storage Temperature
Static Load Limit
+/-5.5V
+/-10 mA
-40°C to +85°C
-40°C to +85°C
489 N at the treadle pivot pin, centered horizontally
on the treadle and normal to Pedal Rotation
Operation of this device beyond absolute maximum ratings may result in permanent damage.
Environmental Validation
Thermal Cycle:
Thermal Stress:
Thermal Shock:
Humidity:
Vibration:
Salt Fog:
Dust Exposure:
Chemical Immersion:
Pressure Wash:
Mechanical Shock:
Refer to Williams Spec WDS-010
Mechanical Validation
5x106
1 Hz
Full Stroke Cycles:
Cycle Rate:
PROCEDURE NAME:
DEPT:
030
Williams Customer Specification Form
DOCUMENT NUMBER:
QEMS Representative
WQF-030-021
Mary Knight
REVISION LEVEL:
Process Owner
2
A
DATE EFFECTIVE:
Michael Cooper
11/13/07
DAF#
00396
Department Manager
Scott Thiel
WCS-131507
Typical Output Characteristics
PROCEDURE NAME:
DEPT:
030
Williams Customer Specification Form
DOCUMENT NUMBER:
QEMS Representative
WQF-030-021
Mary Knight
REVISION LEVEL:
Process Owner
3
A
DATE EFFECTIVE:
Michael Cooper
11/13/07
DAF#
00396
Department Manager
Scott Thiel
WCS-131507
Mechanical Dimensions and Characteristics (for reference only)
PROCEDURE NAME:
DEPT:
030
Williams Customer Specification Form
DOCUMENT NUMBER:
QEMS Representative
WQF-030-021
Mary Knight
REVISION LEVEL:
Process Owner
4
A
DATE EFFECTIVE:
Michael Cooper
11/13/07
DAF#
00396
Department Manager
Scott Thiel
WCS-131507
Applications Information:
Referenced Documents:
•
•
Williams Controls DWG #131507
Williams Controls Specification # WDS-010
Revision History
Rev
A
Date
01/18/08
ECN#
41818
Checked
WJ
Approved
D. Holt
Changes/Comments
Initial Release
Williams Controls
14100 S.W. 72nd Avenue
Portland, OR. 97224
Phone (503) 684-8600
Fax (503) 624-3812
Email [email protected]
PROCEDURE NAME:
DEPT:
030
Williams Customer Specification Form
DOCUMENT NUMBER:
QEMS Representative
WQF-030-021
Mary Knight
REVISION LEVEL:
Process Owner
5
A
DATE EFFECTIVE:
Michael Cooper
11/13/07
DAF#
00396
Department Manager
Scott Thiel