Maintenance
Troubleshooting
MagneMover LITE User Manual
15
Rockwell Automation Publication MMI-UM002E-EN-P - March 2016
After power cycling the propul-
sion power line multiple times the
motor controller will not clear the
under-voltage fault.
The PTC used to limit inrush cur-
rent eventually heats up enough
that it goes to a high resistance
state and does not allow the motor
controller to power up enough to
clear the under-voltage.
Turn off the power supply for a
few minutes to allow the PTC to
cool down sufficiently to allow
proper resumption of operation
upon re-application of the propul-
sion power source.
Motor reports ‘Not in operational
mode’.
All motors currently enter this
state for 100 ms, and then auto-
matically exit. This is to let sam-
pled A/D inputs and observers
settle before using this data. There
is currently no lockout of behav-
ior based on this fault, this fault is
informational only.
Wait 100 ms after reset or power
on before sending any commands
to the motor.
Reset of switch and Paths associ-
ated with the switch fails when
propulsion power is turned off.
Propulsion power is required for
homing of the switch’s flipper.
Allow the reset to fail on the 1
st
try with the propulsion power dis-
abled. Enable the propulsion
power as no vehicles will move
because there are no vehicle
records. Issue a reset to the Paths
that failed so they can complete
including the homing of the
switch’s flipper.
The motor reports a soft start not
complete fault
The motor’s internal power bus is
below +27 VDC.
The fault will clear once the
power bus rises above +32 VDC.
The motor reports an under-volt-
age fault.
Power being supplied to the
motor is below +27 VDC.
Verify the voltage output from the
power supply.
Reduce power cable resistance
between motors that share a com-
mon +36 VDC power supply.
Verify the voltage at the motor.
Verify all power wiring is suffi-
cient to carry all loads and deliver
the proper power to the motors.
The fault will clear once the
power bus rises above +28 VDC.
Table 7-4: Power Related Troubleshooting (Continued)
Symptom
Problem Description
Corrective Action