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Field current problem.

5/22/2014 10:33 AM	Rate (0)
PISCEAN 2010 Posts: 8092 Rating: (884)	What is the speed feedback device? How set point or reference is fed? Have you monitored both when you face the problem?
PISCEAN 2010 Posts: 8092 Rating: (884)
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5/22/2014 11:01 AM	Rate (0)
V.Manivannan Posts: 29 Rating: (0)	Encoder is used for feedback and reference coming from PLC through Profibus. There is no variation in set point.
V.Manivannan Posts: 29 Rating: (0)
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5/22/2014 11:37 AM	Rate (0)
KSN Diamond Expert Joined: 8/25/2006 Last visit: 12/30/2025 Posts: 2221 Rating: (282)	You need to measure field current when speed is lower than rated speed of motor, i.e. when drive is not in field weakening. So check at what speed you measure. Otherwise you can compare field current setpoint and actual value in r035, r036.

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5/25/2014 6:22 PM	Rate (0)
metwally mustafa Silver Member Joined: 10/10/2010 Last visit: 7/5/2025 Posts: 309 Rating: (15)	check the connection of the field from the drive to the motor , i think the connection is defective try to fasten the field terminals toughly for both sides motor and drive

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