2200 SRM 1286 General
General
This section describes the Iskra® motor controller
and dash display used in B60Z
AC
, B80Z
AC
,B60Z
HD
,
and B80Z
HD
lift trucks. Procedures are outlined for
controller programming and troubleshooting.
DISCHARGING THE CAPACITORS
WARNING
The capacitor in the transistor controller can
hold an electrical charge after the battery is
disconnected. To prevent electrical shock and
personal injury, discharge the capacitor before
inspecting or repairing any component. Wear
safety glasses. Make certain the battery has
been disconnected. DO NOT use a screwdriver
to discharge the traction motor controller.
WARNING
To avoid personal injury and prevent electrical
shock, perform the following steps before per-
forming any troubleshooting or adjustments,
and connecting or disconnecting a handset or
PC.
CAUTION
To avoid controller damage, always disconnect
the battery. Discharge the capacitor and never
put power to the controller with any power
wire disconnected. Never short any controller
terminal or motor terminal to battery. Make
sure to use proper procedures when servicing
the controller.
1. Move the truck to a safe, level area. Turn the
key switch to the OFF position and disconnect
the battery.
2. Remove the drive unit compartment cover to ac-
cess the controller.
3. Discharge the capacitors in the controllers by
connecting a 200-ohm, 2-watt resistor across the
controller’s B+ and B
terminals. SeeFigure1.
DO NOT short across the motor controller termi-
nals with a screwdriver or jumper wire. Remove
the 200-ohm, 2-watt resistor before reconnecting
the battery.
1. CONTROLLER
2. POSITIVE CONNECTION
3. INSULATED JUMPER WIRES
4. 200-OHM, 2-WATT RESISTOR
5. NEGATIVE CONNECTION
Figure 1. Discharging the Capacitors
1
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