R&M Materials Handling VARIABLE SPEED CONTROLS ControlMaster Select Service Manual - Manual (Page 32)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
32/46
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
8.3 Inverter fault codes
If any of the following failures is found, the inverter displays the fault code and closes the mechanical
brake causing the movement to stop. If several faults occur one after another, the latest one is displayed,
the others are stored to fault history page.
When inverter fault supervision trips, the FAULT indicator turns on and the blinking fault code “Fx xx“ (x=
fault accounting number, xx = fault code number) appears on the display.
The drive includes an automatic fault reset operation; the fault code stays on the display until the fault is
removed and the controller released back to 0-position. Some of the fault codes require to switch the
power off before run is possible, for example F1 (overcurrent).
All faults are stored in the Fault History menu except F51 Stop-Limit, from there they can be seen if
necessary. The fault history store the last 5 fault codes.
Fault code is at the right side of the display.
Example in picture: Fault code in fault history, F5.X. XX.
X = fault number, XX = Fault code
Example in picture: Active fault code, FX XX
X = fault number, XX = Fault code
Fault
code Fault
Possible cause
Checking
A B
F 1 Overcurrent Inverter has measured too high current (over 4*I
N
peak
or over 2.8* I
N
rms) in the motor output:
sudden heavy load increase
short circuit in the motor or cable
not suitable motor
wrong motor parameters
Reset: switch power off and restart after the lamps of
display are off.
Check:
brake operation
motor type and power rating
parameters
motor cable connection
motor insulation
motor loading X
F 2 Overvoltage DC-bus voltage has exceeded 135% maximum level,
911Vdc
deceleration time is too short
supply voltage raised >1.35 x Un (high overvoltage
spikes at mains or not sinusoidal wave form) Reset has an additional 5s time delay.
Check:
adjust the deceleration time P1.1.3 longer
measure main supply voltage level and wave form
while not driving
braking resistor cable
braking resistor type and resistance
braking chopper operation X
F 3 Earth fault Current measurement has sensed unbalance in motor
phase currents. Supervision level is 5% of inverter
nominal current
not symmetric load
insulation failure in the motor or the cable Reset has an additional 5s time delay.
Check:
motor insulation
motor cable insulation (phase-ground, phase-phase) X
F 6 External Stop ES signal inactive
Check:
ES external connections
Control mode selection P1.1.11
State of input DID5, V2.3.
Thermal protection of motor is normally connected to X