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Are the motor specifications (poles, volt-
Motor run-
age) correct?
ning speed
Is the gear ratio correct?
too high or
Is the setting of the highest output fre-
too low
quency correct?
Is the load too heavy?
Motor speed
Does the load vary largely?
varies unusu-
ally
Is the input power lack of phase?
Emotron AB 01-3990-11r3
Confirm the motor's specifications.
Confirm the gear ratio.
Confirm the highest output frequency.
Reduce the load.
Minimize the variation of the load.
Increase capacities of the VSD and the
motor.
Check wiring if using three-phase
power.
Troubleshooting and maintenance
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