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DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
5.5
DUAL SPEED AXLE
The Dual Speed Axle feature allows a digital input to be con
fi
gured to switch between two
axle ratios for calculation of vehicle speed.
5.5.1
OPERATION
When the digital input is open the
fi
rst axle ratio will be used. When the switch is grounded, the
second axle ratio will be used. The vehicle must be stopped before switching the axle ratios.
5.5.2
INSTALLATION
The Dual Speed Axle Switch is pin 1/1 on the CPC.
5.5.3
PROGRAMMING FLEXIBILITY & REQUIREMENTS
The digital input listed in Table 5-10 can be con
fi
gured by VEPS or DRS.
Parameter
Group
Parameter
Options
Default
Access
13
2nd Axle Speed Switch
Con
fi
g
0 = Hardwired
1 = CCVS1
2 = CCVS2
3 = CCVS3
0 = Hardwired
VEPS,
DRS
13
1 01 DI Selection
0 = Disable
1 = Enable Dual Speed Axle
2 = Enable Transmission Retarder Input
3 = FUSO Auxiliary Brake Cut Switch
0 = Disable
VEPS,
DRS
Table 5-10
Dual Speed Axle Digital Input
Both axle ratios listed in Table 5-11 must also be programmed with VEPS, DRS or DDDL 7.0.
Parameter
Group
Parameter
Description
Range
Default
8
Axle Ratio
Indicates the
fi
rst axle ratio
of the vehicle.
1.0 – 20.00
5.29
8
Two Spd Axle
Second Axle Ratio
Indicates the second axle
ratio of the vehicle.
1.0 – 20.00
5.29
Table 5-11
Programming the Axle Ratios
All information subject to change without notice.
(Rev. 01/07)
5-19
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION