7.3 Alarm cause and handling
137
Err11 (Power module over-current)
Potential cause Check Handle
Short circuit between motor
connection U、V、W
Check U、V、W wiring Properly connected U、V、W wiring
Motor winding insulation
damage
Check the servomotor Replace the servo motor
Drive damage Check driver
No problem with motor, power on again
or alarm, may be drive damage
Bad earth Check the ground wire Correct grounding
Be disturbed
Check the source of
interference
Add line filter, away from interference
source
Err12 (Over-current)
Potential cause Check Handle
Short circuit between motor
connection U、V、W
Check U、V、W wiring Properly connected U、V、W wiring
Motor winding insulation
damage
Check the servomotor Replace the servo motor
Drive damage Check driver
No problem with motor, power on again
or alarm, may be drive damage
Err13 (Over-load)
Potential cause Check Handle
Excess the rated load for
continuous duty operation
Check the load factor
Reduce load or replace the servo driver
with bigger one.
System unstable
Check the oscillation when
servomotor is in running
Reduce the gains of the system
Acceleration/deceleration is too
short
Check the smoothness when
servomotor is in running
Increase the acceleration and
deceleration time
Encoder zero point changes Check the encoder zero point
Install the encoder again and adjust the
zero point.