PowerPac MCE400 - Page 30

Page 30 of 49 Instructions/Parts list Multi-Dumper MCE400 updated: 04.2021
3,7 Motor Open
Shutdown Motor
Shutdown Main Contactor
Shutdown EM-Brake
Shutdown Throttle
• The motor phase is open.
• Bad crimps or faulty wiring.
The controller detected that the
motor phase is open.

Make sure the motor is
connected to the
M1 and
M2 connectors, then cycle
the keyswitch.
3,8
Main Contactor Welded
Shutdown Motor
Shutdown Main Contactor
Shutdown EM-Brake
Shutdown Throttle
• The main contactor tips are
short circuited.
• Motor phase M1 or M2 is
disconnected or open.
• An alternate
voltage path,
such as an external circuit to
B+, is providing current to
the capacitor bank (B+
connection terminal).
Prior to the main contactor
closing, the capacitor bank
voltage (B+ connection terminal)
was loaded via the motor for a
short time, but the voltage did not
discharge.

Address the possible
causes, then cycle the
keyswitch.
3,9
Main Contactor Did Not
Close
Shutdown Motor
Shutdown Main Contactor
Shutdown EM-Brake
Shutdown Throttle
• The main contactor tips are
oxidized, burnt, or not
making good contact.
•
An external load on the
capacitor bank (B+
connection terminal) is
preventing the capacitor
bank from charging.
• Blown B+ fuse.
• The Pull-
In Voltage and
Holding Voltage parameters
are incorrectly configured.
• The main contactor opened
even though the controller
commanded the contactor
to close.
• The wiring to the contactor’s
coil was removed.
• The coil is defective.
The capacitor bank voltage
(B+ connection terminal) did not
charge to B+ when the main
contactor was commanded to be
closed.
 Contact costumer support
3,10
Throttle Input
ShutdownThrottle
• The throttle’s input voltage
is outside the voltage range
of the throttle’s analog input.
•
The Analog 1 Type
parameter is incorrectly
configured.
The throttle input voltage
is outside the range defined by
the analog input’s Low and High
parameters.
 Contact costumer support