7
7.0 Troubleshooting
7.1 Follower Arm Applications
Symptom
Possible Cause
Solution or Diagnostic
No DC power.
Verify incoming power is the correct
voltage.
Fuse blown.
Output wires shorted together or
shorted to ground.
Output wires open circuit.
Verify output voltage or current at the
receiving device.
Remote tension adjust
potentiometer turned full
counter clockwise or not
wired properly.
Verify tension pot wiring, turn tension
adjust pot full clockwise and follow
the calibration procedure in section
4.3.
Voltage between terminals 20(+) and
22(-) should be greater than zero and
should change as the DFP or DFP-2
is moved through its travel.
Remote tension
potentiometer resistance
is less than 10 kohms.
Use a 10 kohm potentiometer for the
Remote tension control.
DFP, DFP-2 position
sensor not wired properly
or wires shorted.
Verify position sensor is wired
properly and follow the calibration
procedure in section 4.3.
Voltage between terminals 24 and 26
should be 10 vdc.
Voltage between terminals 25 and 26
should change as the DFP or DFP-2
is moved through its travel.
No output.
Follower Arm not
calibrated.
Follow the calibration procedure in
section 4.3.
RUN/STOP switch not
connected or not wired
properly.
Verify RUN/STOP switch wiring.
Output does not
increase during
stop time.
STOP MULT
iplier
potentiometer not set
properly.
Turn
STOP MULT
potentiometer
clockwise to increase the stopping
torque.
Incorrect type of meter.
Meter should be a current meter with
1 ma full scale and no more than
500 ohm resistance.
Remote meter not
working.
Meter wires shorted or
open.
Disconnect meter wiring at the
DFC-A and check for proper meter
resistance between the wires.
