Detroit Diesel DDEC VI Application And Installation page 339

5.22.5 INSTALLATION INFORMATION
A Vehicle Speed Sensor (VSS) must be installed. It must be enabled, and all proper calculations
entered into the ECU with DRS, DDDL 7.0, or VEPS. Refer to section 3.6.6, "Vehicle Speed
Sensor," for additional information.
The Spec Manager program should be utilized to determine maximum vehicle speed for low range
#1 and #2. If the maximum engine speed and maximum vehicle speed coincide, the Progressive
Shift logic may not correctly compensate faster or slower on either side of the maximum vehicle
speed. Spec Manager can alert the programmer to this dilemma and advise accordingly on
maximum vehicle speed set points.
Example: If the maximum vehicle speed #1 was 12 MPH (approximately 19.5 kmh), the
Progressive Shift logic may not determine if the maximum engine speed is 1400 or 1600 RPM.
Spec Manager would advise moving the maximum vehicle speed #1 plus or minus 2 MPH
(approximately 3.2 kmh) to eliminate any possible confusion.
5.22.6 PROGRAMMING FLEXIBILITY
Enabling all areas required for Progressive Shift can be performed with DDDL 7.0, VEPS, or
DRS.
The Progressive Shift option has two sets of low gear and one set of high gear parameters as
listed in Table 5-70.
Parameter
Parameter
Group
Progressive Shift
23
Enable
PS Low Gear 1 Max
23
Vehicle Spd
PS Low Gear 1
23
RPM Limit
PS Low Gear 1 Max
23
RPM Limit
PS Low Gear 2 Max
23
Vehicle Spd
PS Low Gear 2
23
RPM Limit
PS Low Gear 2 Max
23
RPM Limit
PS High Gear On
23
Vehicle Spd
PS High Gear RPM
23
Limit
Table 5-70 Progressive Shift Programming
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
Indicates the enabled/dis-
abled status of the progres-
sive shift feature.
Sets the low gear #1 turn off
speed.
Sets the low gear #1 RPM
limit.
Sets the low gear #1
maximum RPM limit.
Sets the low gear #2 turn off
speed.
Sets the low gear #2 RPM
limit.
Sets the low gear #2
maximum RPM limit.
Sets the high gear turn on
speed.
Sets the high gear RPM limit.
Range Default
0 = Disabled
0 = Disabled
1 = Enabled
0–250 km/h 19.3 km/h
0–4000 RPM 1400 RPM
0–4000 RPM 1800 RPM
0–250 km/h 43.5 km/h
0–4000 RPM 1600 RPM
0–4000 RPM 1800 RPM
0–250 km/h 80.5 km/h
0–4000 RPM 1650 RPM
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