Williams Customer Specification
Original Release: 01/25/08
Original Project: 328
FEATURES
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
APPLICATIONS
The Celect ESPA is a firewall-mounted
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
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: WQF-030-021 Revision Level A Date Effective 11/13/07 DAF# 00396
QEMS Representative Mary Knight Process Owner Michael Cooper Department Manager Scott Thiel
WCS-131507 | Williams Customer Specification
ABSOLUTE MAXIMUM ELECTRICAL/MECHANICAL RATINGS
APS Circuit
Supply Voltage (VCC1, VCC2) +/-5.5V
Output Current (APS1, APS2 output) +/- 10mA
Short Circuit Duration – to GND or VCC Indefinite
IVS Circuit
Supply Voltage +/-5.5V
Output Current (IVS output) +/-10mA
Operating Temperature -40°C to +85°C
Storage Temperature -40°C to +85°C
Static Load Limit 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
Refer to Williams Spec WDS-010
Salt Fog
Dust Exposure
Chemical Immersion
Pressure Wash
Mechanical Shock
MECHANICAL VALIDATION
Full Stroke Cycles: 5x106
Cycle Rate: 1 Hz
PROCEDURE NAME: DEPT: 030
Williams Customer Specification Form
DOCUMENT NUMBER: WQF-030-021 Revision Level A Date Effective 11/13/07 DAF# 00396
QEMS Representative Mary Knight Process Owner Michael Cooper Department Manager Scott Thiel
WCS-131507 | Williams Customer Specification
TYPICAL OUTPUT CHARACTERISTICS
PROCEDURE NAME: DEPT: 030
Williams Customer Specification Form
DOCUMENT NUMBER: WQF-030-021 Revision Level A Date Effective 11/13/07 DAF# 00396
QEMS Representative Mary Knight Process Owner Michael Cooper Department Manager Scott Thiel
WCS-131507 | Williams Customer Specification
MECHANICAL DIMENSIONS AND CHARACTERISTICS (FOR REFENCE ONLY)
Measurements in mm
PROCEDURE NAME: DEPT: 030
Williams Customer Specification Form
DOCUMENT NUMBER: WQF-030-021 Revision Level A Date Effective 11/13/07 DAF# 00396
QEMS Representative Mary Knight Process Owner Michael Cooper Department Manager Scott Thiel
WCS-131507 | Williams Customer Specification
APPLICATIONS INFORMATION:
REFERENCED DOCUMENTS
Williams Controls DWG #131507
Williams Controls Specification #WDS-010
REVISION HISTORY
Rev Date ECN# Checked Approved Changes/Comments
A 01/18/08 41818 WJ D. Holt Initial Release
USA Portland Europe Garching Asia Shanghai
Oregon Germany China
T: +1.503.684.8600 T: +44.89.5404.100.0 T: +86.213.3310670
cwig.us@curtisswright.com cwig.de@curtisswright.com cwig.cn@curtisswright.com
www.cw-industrialgroup.com www.cw-industrialgroup.com www.cw-industrialgroup.com
PROCEDURE NAME: DEPT: 030
Williams Customer Specification Form
DOCUMENT NUMBER: WQF-030-021 Revision Level A Date Effective 11/13/07 DAF# 00396
QEMS Representative Mary Knight Process Owner Michael Cooper Department Manager Scott Thiel
