6-1
TROUBLESHOOTING
www.maxcessintl.com
MAGPOWR DFC-90
MI 850A265 1 G
Follower arm applications
Symptom
Possible cause
Solution or diagnostic
No clutch/brake
output
No AC power
Verify incoming power is correct voltage and
frequency.
Fuses blown
Clutch/brake wires shorted together or
shorted to ground.
Clutch/brake wires open circuit
Disconnect clutch/brake wires at the DFC-90
and check for proper clutch/brake resistance
between the wires.
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 beginning on page 4-2.
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 10kΩ
Use a 10kΩ 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 beginning on
page 4-2.
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.
Follower Arm not calibrated
Follow the calibration procedure beginning on
page 4-2.
Clutch/brake
output does not
increase during
stop time
RUN/STOP switch not connected
or not wired properly
Verify RUN/STOP switch wiring.
STOP MULTiplier potentiometer
not set properly
Turn STOP MULT potentiometer clockwise to
increase the stopping torque.
Remote meter not
working
Incorrect type of meter
Meter should be a current meter with 1 mA
full scale and no more than 3kΩ resistance.
Meter wires shorted or open
Disconnect meter wiring at the DFC-90 and
check for proper meter resistance between the
wires.
