RUN 600 XTPRO: Service & Maintenance Manual - rev. 1.3
Page 6.23
6.5. THE BELT MOTOR IS JERKING
The probable cause of this error is a disconnected phase on the motor or inverter output.
THE BELT
MOTOR IS
JERKING
Are the belt motor windings
short-circuited or open-circuited
YES
Replace the inverter
1
NO
Replace the belt motor
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1) Disconnect the motor cable from the motor and place a tester across its terminals U-V, U-W
and V-W. The measured resistance should be approximately 3.1 Ohm.
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