Troubleshooting - Emerson PACMotion IC830M21C Installation And User Manual

PACMotion™ Rotary Servo Motors Installation and User Manual
GFK-3169C
Section 6:
The following table is to be seen as a "First Aid" box. There can be a large number of different reasons for a
fault, depending on the particular conditions in your system. The fault causes described below are
mostly those which directly influence the motor. Peculiarities which show up in the control loop
behavior can usually be traced back to an error in the parameterization of the servo amplifier. The
documentation for the servo amplifier and the setup software provides information on these matters.
For multi-axis systems there may be further hidden reasons for faults.
Fault
Motor doesn't
rotate
Motor runs
away
Motor
oscillates
Error message:
brake
Error message:
output stage
fault
Error message:
resolver
Error message:
motor tem-
perature
Brake does not
grip

Troubleshooting

Troubleshooting
Possible cause
- Servoamplifier not enabled
- Break in setpoint lead
- Motor phases in wrong sequence
- Brake not released
- Drive is mechanically blocked
- Motor phases in wrong sequence
- Break in the shielding of the resolver
cable amplifier gain too high
- Short-circuit in the supply voltage
lead to the motor holding brake
- Faulty motor holding brake
- Motor cable has short-circuit or
earth short
- Motor has short-circuit or earth
short
- Resolver connector is not properly
plugged in
- Break in resolver cable, cable
crushed or similar
- Motor thermosensor has switched
- Loose resolver connector or break in
resolver cable
- Required holding torque too high
- Brake faulty
- Motor shaft axially overloaded
Section 6
Measures to remove the cause
of the fault
- Supply ENABLE signal
- Check setpoint lead
- Correct the phase sequence
- Check brake controls
- Check mechanism
- Correct the phase sequence
- Replace resolver cable use
motor default values
- Remove the short-circuit
- Replace motor
- Replace cable
- Replace motor
- Check connector
- Check cables
- Wait until the motor has
cooled down. Then investigate
why the motor becomes so
hot.
- Check connector, replace
resolver cable if necessary
- Check the dimensioning
- Replace motor
- Check the axial load, reduce
it. Replace motor, since the
bear- ings have been damaged
Mar 2021
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