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Input protection fault

Created by: SATISH CHOWDARY at: 5/28/2013 12:30 PM (3 Replies)

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5/28/2013 12:30 PM	Rate (0)
SATISH CHOWDARY Posts: 4 Rating: (0)	Dear all, We have 2500 KV Perfect Hormony Robicaon drive for Bag house fan.In running drive is tripped with "Input Protection fault" and after master reset drive is coming healthy. product name :AC Variable Frequency drive,WCIII, Liquid cooled perfect harmony drive Input :6.6K V and Output :2.5KV Cell size :800-1200 Amps. Plz any one give me solution to sort out the problem. Satish
SATISH CHOWDARY Posts: 4 Rating: (0)
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5/28/2013 5:33 PM	Rate (0)
N. Vijay Silver Member Joined: 3/17/2013 Last visit: 12/19/2024 Posts: 481 Rating: (43)	Could you mail me the SOP file where the fault logic is defined alongwith event and fault logs Normally it is related to your MV IP breaker OFF or fault. It also depends on your drive features like cell bypass and if it has it, it can be due to Over voltage or overcurrent detection during or aftercell bypass or if Excessive Drive losses Flag is set Regards, Vijay

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4/11/2014 5:38 AM	Rate (0)
Bob_Harvey Member Joined: 6/6/2011 Last visit: 11/15/2023 Posts: 8 Rating: (5)	Input Protection faults are a group of faults associated with possible transformer failure or other reasons to trip the incoming HV supply (such as door switches or earthing switch interlocks). You should not clear down an input protection fault without fully understanding why it occured, which would include reading the event log and would probably be best handled by a service call from a Siemens engineer. Some Gen IV drives set input protection faults if the doors are opened, and the method of detecting those and resetting the fault relay should be in the manual.

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7/8/2014 7:40 PM	Rate (0)
Narrator1 Bronze Member Joined: 3/25/2013 Last visit: 3/21/2019 Posts: 176 Rating: (1)	New question split intoNXG perfect harmony drive - humming noise from the transformer during startup. With best regards, Narrator1

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