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9/20/2011 4:11 PM	Rate (0)
Vick Regular Member Joined: 8/3/2011 Last visit: 11/10/2025 Posts: 4 Rating: (0)	Dear Experts, I have a problem with a MASTERDRIVE MC 6SE7012 – 0TP50 that I connected to a motor ( 1LA 7080 – 4AA60) for testing.Motor is no load and after commisioning i make identification. Why current during operation is higher than the rated current? I read the value of current with Drive monitor and after 30 min the MASTERDRIVE tripped in F021. I run the drive at rated speed.

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9/21/2011 12:18 PM	Rate (0)
Graeme Platinum Expert Joined: 6/4/2008 Last visit: 11/25/2025 Posts: 1521 Rating: (327)	Hi, please check you have wired the motor terminals as per the voltage you are running at. i.e. for 400VAC, you would require star configuration. Motor is a 0.55kW, so should easily be able to be driven by the 0.75kW drive. Regards, Graeme

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9/21/2011 1:09 PM	Rate (0)
Vick Regular Member Joined: 8/3/2011 Last visit: 11/10/2025 Posts: 4 Rating: (0)	Thanks for answer I check again that, but this motor in star connection has 690v. The connections are good. Rated current for this motor is 1.46A and DRIVE MONITOR show 1.5 ...1.6 A at rated speed.

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9/22/2011 3:54 PM	Rate (0)
DenisMor Posts: 344 Rating: (50)	Which mode are you running the motor in: V/Hz or closed loop speed control?
DenisMor Posts: 344 Rating: (50)
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9/27/2011 9:15 AM	Rate (0)
Vick Regular Member Joined: 8/3/2011 Last visit: 11/10/2025 Posts: 4 Rating: (0)	I run the motor in V/F without encoder.

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