Installation 2 - 3
Forklifts and Trucks with 12V, 24V, 36V and 48V Batteries
•
All power wiring must use the supplied 25-159551-03 power cable.
•
One 3AB, 15A, 250V, FST BLO fuse.
•
One 3AG, 0.3A, 250V, FST BLO fuse.
•
Keep the path between the battery and the vehicle computer as short as possible and away from any part of
the ignition high tension system.
Figure 2-1
Wiring Diagram
You can use your old VC5090 power cable. When employing this option, use VC5090 Bridge Cable, PN
25-159553-01. You must also replace the fuses on the red and black wires of the old cable with the new fuses
supplied with the bridge cable kit.
1. Disconnect the vehicle battery.
2. Connect the red wire directly to the vehicle's battery positive terminal. Connect the black wire directly to the
vehicle's battery negative terminal.
VC70
Power Cable
25-159551-03
9-60V DC
Black
Red
Vehicle
Battery
Ignition Switch or Key Switch
15A Fuse
Yellow
Important: If your vehicle is not equipped with an ignition or key switch, connect the yellow wire directly
to the positive terminal of the vehicle’s battery. Failure to comply, will disenable the VC70 operation.
0.3 A Fuse
CAUTION To prevent damage to the VC70, replacing the vehicle battery is forbidden when the ambient
temperature is under -10
°C
. Attempting to replace a battery under -10
°C
will result in a warning
shown on the VC70 screen and prevent the user from switching off the VC70. To replace the battery,
move to a place with temperature is above -10
°C
- the warning screen will disappear.
NOTE The vehicle computer contains an Ignition Sense feature that detects when the ignition switch or key
switch is turned off and shuts the vehicle computer down after a preprogrammed timeout. This feature
allows the operator to use the vehicle computer for a predetermined time period after the ignition switch or
key switch is turned off, then shuts the vehicle computer down automatically to prevent over-discharge of
the forklift battery. The timeout period is adjustable by the user (see Ignition Sensing on page 2-5 for
setting the timeout value). When the vehicle computer enters low power mode using the Ignition Sense
feature, current draw from the vehicle battery is reduced to less than 15mA and the vehicle computer
consumes current from it's internal battery. This feature provides the automatic shutoff functionality of an
external relay, without requiring an actual relay and has the added benefit of allowing the user to work for
a preset time period before shutting down.
NOTE For power drain of the forklift battery under the various power conditions, refer to Power Status on page
3-22.
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