![Detroit Diesel DDEC VI Application And Installation Download Page 373](http://html.mh-extra.com/html/detroit-diesel/ddec-vi/ddec-vi_application-and-installation_2488033373.webp)
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
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
Group
Parameter
Description
Options
Default
Access
3
Max Road Speed
Maximum vehicle speed.
Alternate Road Speed
Limiter 0 cannot exceed
this speed.
10 – 152 km/hr
152 km/hr
VEPS, DRS or
DDDL 7.0
5
Limiter0 Max
Road Spd
Enabled
Maximum vehicle speed
when CPC pin 1/11 is
connected to ground.
0 – 152 km/hr
152 km/hr
VEPS, DRS or
DDDL 7.0
5
Limiter1 Max
Road Spd
Enabled
Maximum vehicle speed
when CPC pin 2/11 is
connected to ground.
0 – 152 km/hr
152 km/hr
VEPS, DRS or
DDDL 7.0
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)
5-161
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION