10/1/2009 8:28 AM | |
Joined: 7/8/2009 Last visit: 8/5/2024 Posts: 1976 Rating: (477) |
Dear all, I am working in one of the System House. One of our customer has a problem inMasterdrive. Application is Main Hoist in EOT crane. Drive is frequently tripping on F011 fault. Main thing is to be noted here is that drive trips mainly during Lowering and on NO LOAD. It is not triping during Hoisting. Current in r004 is about 120Amp which is normal for NO LOAD. Drive MLFB is 6se7032-6eg60 Motor Rated current is 180 Amp. And max current limit set in P128 is 270Amp. Drive is in Vector Control Mode with Encoder feedback. Here by I attached Drive Parameter set also. AttachmentMain Hoist.pdf (341 Downloads) |
I dont Like people driving Fast, thats the reason I overtake them ;) |
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10/14/2009 7:58 AM | |
Joined: 7/8/2009 Last visit: 8/5/2024 Posts: 1976 Rating: (477) |
The fault is not coming regularly. It comes 3-4 times in a day and 5-6 times during night period. So it is not possible practically to sit against drive and wait for trip to take trace. 2-3 Days ago, the frequency of this fault increassed so I changed operating mode of drive to v/f to trace the problem. I found that in v/f mode, there was not any tripping. So I suggested client to check Encoder for any damage. Now drive is again in Vector Control mode. This trip occurs mainly above 40 Hz speed so client has reduced its max freq to 40 Hz temperorily. I havea doubt regarding encoder. Following thread leads me to think for that /tf/WW/en/Posts/17566#top Whats your openion for that?? |
I dont Like people driving Fast, thats the reason I overtake them ;) |
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6/30/2013 11:18 AM | |
Joined: 7/8/2009 Last visit: 8/5/2024 Posts: 1976 Rating: (477)
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During search for something, I encountered my old post Here is what i found i checked encoder feedback as per my this post Trouble shooting in Vector Control Mode And what i found was, when we moved CT and taken it to one end, it was running very nice, then at second end, encoder feedback was checked and found variation in signal after 40Hz On further checking we observed there is HT line passing near to that end so what we suspected was, its magnatic field is influencing encoder feedback Finally we kept max speed to 40Hz only because, we tried everything like shielding and all but not suceeded in avoiding this disturbance Regards, Devesh Vithani |
I dont Like people driving Fast, thats the reason I overtake them ;) |
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