PowerPac MCE400 - Page 29

Page 29 of 49 Instructions/Parts list Multi-Dumper MCE400 updated: 04.2021
2,5 Overvoltage Cutback
Reduced brake torque
• The regen braking current
elevated the battery
voltage.
•
The User Overvoltage
parameter is incorrectly
configured.
• The battery resistance is too
high for the regen current.
•
The battery disconnected
during regen braking.
•
Note: The controller
generates this fault only
during regen braking.
The controller’s capacitor bank
voltage exceeded the
Overvoltage threshold.
 Address the possible
causes, then cycle the
keyswitch.
2,10
Main Driver
Shutdown Motor
Shutdown Main Contactor
Shutdown EM-Brake
Shutdown Throttle
• The main driver is open or
shorted.
• The controller’s or contactor
coil’s connector pins are
dirty.
•
Bad connector crimps or
faulty wiring.
The Main Contactor driver is
either open or shorted.

Repair the wiring and
connections, then cycle the
keyswitch.
3,1 EM-brake Driver
Shutdown EM-Brake
Shutdown Throttle
•
The driver is open or
shorted.
• The controller’s or EM brake
coil’s
connector pins are
dirty.
•
Bad connector crimps or
faulty wiring.
The electromagnetic brake driver
is either open or shorted.

Repair the wiring and
connections, then cycle the
keyswitch.
3,4
AUX 1 Driver
Shut down the assigned driver
•
The driver is open or
shorted.
• The controller’s or contactor
coil’s connector pins are
dirty.
•
Bad connector crimps or
faulty wiring.
The driver for the Aux 1 contactor
is either open or shorted.

Repair the wiring and
connections, then cycle the
keyswitch.
3,5 AUX 2 Driver
Shut down the assigned driver
•
The driver is open or
shorted.
• The controller’s or contactor
coil’s connector pins are
dirty.
•
Bad connector crimps or
faulty wiring.
The driver for the Aux 2 contactor
is either open or shorted.

Repair the wiring and
connections, then cycle the
keyswitch.
3,6
Encoder Fault
Shutdown EM-Brake
Shutdown Throttle
Shutdown Motor
• Motor encoder failure.
•
Bad connector crimps or
faulty wiring.
The controller detected a motor
encoder failure.

Repair the wiring and
connections, then cycle the
keyswitch.