Step What to do How to do it
ohm slidewire). This voltage should remain steady as the
motor moves.
2) Measure between the + and the – terminals (across just
the wiper section). This voltage should be somewhere
between 0.002 and 0.200 volts, depending upon the total
slidewire resistance and the current position of the
slidewire. This voltage should vary smoothly as the motor
moves and the wiper travels across the slidewire. If the
voltage jumps at a particular position while the motor is
moving, this could indicate a “deadspot” and mean that the
slidewire may be worn out and need replacing. Refer to the
motor manufacturer’s instructions.
7 Make sure the
output relays are
actuating
properly.
Put the controller into Manual mode. Vary the output above
and below the present value. Observe “OUT” indicators and
the output value (“OUT”) on the lower display. When the
“OUT 1” indicator is on, the output value should be
increasing. When the “OUT 2” indicator is on, the output
value should be decreasing.
If these are not working properly, check the field wiring,
then go to Step 5.
If they are, go to Step 8.
8 Recalibrate the
controller.
See Output Calibration for more information.
9 Change the two
Output Relays or
the Dual Relay
Board
(depending upon
unit)
Installation instructions supplied with the new relays or
board.
270
Chapter 8 - Troubleshooting/Service
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