Servomotor series JHN, JHQ, and JL – User Manual
Installation and commissioning
Jetter AG
221
Malfunctions and troubleshooting
8.7.5
Type of error
Error cause
Error handling
The motor is humming
•
Immediately deactivate the
ENABLE signal to prevent the
motor winding from
overheating!
•
Wait until the motor has
cooled off.
•
Check motor and control
parameters.
Neither controller nor motor are
functioning any more
•
The servo amplifier has not
been enabled.
•
Apply ENABLE signal.
•
There is insufficient protection
against interference.
•
To prevent disturbances
caused by the motor, encoder
or brake lines from being
transmitted to the voltage
supply of the controller or to
other sensitive sensors
proceed as follows:
•
Use servo cables from
Jetter AG.
•
Use a separate power
supply unit for the brake
supply voltage.
Motor does not rotate
•
Motor phases are mixed up
•
Connect motor phases
correctly
•
Brake is not released
•
Check brake control
•
Drive mechanism is jammed
•
Check drive mechanism
Motor does not follow the
setpoint
•
Setpoint line is interrupted.
•
Check setpoint line
Motor overspeed
•
Motor phases are mixed up
•
Connect motor phases
correctly
Motor chatters
•
Resolver line shielding has
been interrupted
•
Replace resolver line
•
Gain factor too high
•
Use motor default values
Brake does not grip
•
Brake defective
•
Replace motor
•
Axial motor shaft overload
•
Check and reduce axial load
•
If the bearings are damaged,
replace the motor
•
Required holding torque is too
high
•
Check dimensioning
Error message: Brake
•
Short-circuit in the supply line
of the motor holding brake
•
Eliminate short circuit
•
Motor holding brake is
defective
•
Replace motor
Error message: Output stage
•
Short-circuit or ground fault on
motor line
•
Replace cable
•
Short-circuit or ground fault in
motor
•
Replace motor
Error message: Resolver
•
Resolver connector has not
•
Check plug connection