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Troubleshooting
313997A
79
T4C1
Motor Control
High Temp.
The temperature the MCM has
reached a level where product
life will be decreased
drastically and has been
shutdown for protection
Alarm
No power to fan
Check cord to make sure fan has power
Debris is fan or heatsink Clear debris from fan or heatsink
Low air volume from fan
Try to stop fan by lightly pressing on the center with a
pencil eraser. If the fan slows down easily it will need
to be replaced
Motor may be damaged Replace motor
Debris is packed in the
MCM’s heat sink fins
Clear debris from MCM heat sink fins
V4H0
Motor Control
Overvoltage
The voltage to the MCM has
reached an unsafe level and
has been shutdown in an
attempt to prevent damage
Alarm
Supply lines providing
high voltage
Check incoming voltage to ensure it is below the
maximum operating voltage
V1H1
Motor Control
Undervoltage
The voltage to the MCM has
dropped to a level where
performance is greatly affected
Alarm
Tripped circuit breaker
Visually check circuit breaker for a tripped condition
Supply lines providing
low voltage
Check incoming voltage to ensure it is above the
minimum operating voltage
WBH1
Motor
Encoder Fault
An error has been detected on
the motor position sensor
Alarm
Failing sensors
If error persists the motor will need to be replaced
Loose connection
Ensure the d-sub connector to the motor is connected
and the wiring is intact
WMH1
Motor
Controller
Fault
A general fault has occurred
within the MCM
Deviation Internal hardware failure
Cycle power, if the error persists the MCM will need to
be replaced
MBN1
Low Motor
Performance
The motor magnetism has
decreased to the point where
performance is greatly reduced
Advisory
Prolonged exposure to
heat or high voltage
If error persists and performance can no longer
satisfy the user requirements the motor will need to
be replaced
WKH1
High Motor
Speed
The motor has reached a
speed that should not be
reached in normal operation
and was shutdown to prevent
possible damage
Alarm
No power to directional
value
Make sure the directional valve has power
Bad directional valve
connection
Make sure the cord to the directional valve is
connected to the correct port and the cord is not
damaged
Directional valve failure
The directional valve will need to be replaced
Hydraulic power pack
failure
The hydraulic power pack will need repair
Defective encoder
Replace encoder
Motor no longer coupled
to hydraulic pump
Reset coupler per specifications and retighten set
screws
Supply tube from
hydraulic pump to
manifold is loose or
broken
Retighten or replace supply tube
Broken motor shaft
Replace motor
N4A1
Pump Failed
to Move
The MCM attempted to move
the pump but no movement
was detected
Deviation
Motor failure
Visually check to ensure the pump is moving, if not
ensure the motor is wired properly
Hydraulic power pack
failure
If motor is moving but pump is not and pressure is not
building they hydraulic power pack may need
servicing
Loose/bad connection to
the linear position sensor
Check to ensure the linear position sensor is properly
connected to the MCM and the wiring has not be
damaged
Failure of the linear
position sensor
Replace the linear position sensor
Motor no longer coupled
to hydraulic pump
Reset coupler per specifications and retighten set
screws
Supply tube from
hydraulic pump to
manifold is loose or
broken
Retighten or replace supply tube
Broken motor shaft
Replace motor
Over-pressure valve
dumping to tank
Verify that no outside forces are stopping the pump
from moving, then inspect over-pressure valve for
damage or debris
Error
Code
Error Name
Error Description
Error
Type
Cause
Solution