Detroit Diesel DDEC VI Application And Installation page 373

5.27 VEHICLE SPEED LIMITING
A Vehicle Speed Sensor is necessary for the Vehicle Speed Limiting feature.
5.27.1 OPERATION
Vehicle Speed Limiting discontinues engine fueling at any vehicle speed above the programmed
limit. The CPC stops fueling when maximum vehicle speed is reached. If the Limiter 0 Switch is
OFF, the Maximum Road Speed Limit will be the limit for the road speed. If the Limiter 0 Switch
is ON, the Alternate Speed Limiter (Limiter 0) Speed will be the limit for the road speed. Setting
any of the limits to the maximum value will disable that road speed limit.
5.27.2 INSTALLATION
An OEM supplied Vehicle Speed Sensor or output shaft speed over the SAE J1939 Data Link is
required. Refer to section 3.6.6, "Vehicle Speed Sensor," for additional information. If the Limiter
0 switch is required, it is wired to CPC pin 1/11. This is a normally open switch.
5.27.3 PROGRAMMING REQUIREMENTS AND FLEXIBILITY
The Vehicle Speed Limit parameters are listed in Table 5-89.
Parameter
Parameter
Group
3
Max Road Speed
Limiter0 Max
5 Road Spd
Enabled
Limiter1 Max
5 Road Spd
Enabled
Table 5-89 Vehicle Speed Limiting Parameters
For more information on limiters, refer to section 5.16, "Limiters."
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
Description
Maximum vehicle speed.
Alternate Road Speed
Limiter 0 cannot exceed
this speed.
Maximum vehicle speed
when CPC pin 1/11 is
connected to ground.
Maximum vehicle speed
when CPC pin 2/11 is
connected to ground.
Options Default
10 – 152 km/hr 152 km/hr
0 – 152 km/hr 152 km/hr
0 – 152 km/hr 152 km/hr
Access
VEPS, DRS or
DDDL 7.0
VEPS, DRS or
DDDL 7.0
VEPS, DRS or
DDDL 7.0
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