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Forums13
Topics7,385
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Apr 9th, 2026
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Joined: Sep 2012
Posts: 12
stranger
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stranger
Joined: Sep 2012
Posts: 12 |
Can anyone help on a miprom 21 problem. Keep getting 41 fault. Car runs but only makes floor to floor runs and throws 41 faults. Already changed encoder and speed boards.
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Joined: Jan 2012
Posts: 419
addict
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addict
Joined: Jan 2012
Posts: 419 |
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Joined: Mar 2010
Posts: 366
enthusiast
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enthusiast
Joined: Mar 2010
Posts: 366 |
41-saw the intermediate speed (67%) out of tolerance. May be a problem with the tach on the motor or an issue with the ETS board (not uncommon) Make sure your TM switch is correct and or your hoistway slow downs are correct.
Last edited by E311; 09/07/12 09:41 PM.
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Joined: Sep 2012
Posts: 12
stranger
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stranger
Joined: Sep 2012
Posts: 12 |
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Joined: Sep 2012
Posts: 12
stranger
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stranger
Joined: Sep 2012
Posts: 12 |
Replaced ETS and NTS boards. Ran set up and they are in tolerance.
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Joined: Jan 2012
Posts: 419
addict
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addict
Joined: Jan 2012
Posts: 419 |
Still doing it? Allen Bradley 1336 digital drive or Baldor 914 analog? (Both are the only AC's I know that are installed on this equipment. If 1336 No NTS board. Done internally on the motion adapter board.
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Joined: Jan 2012
Posts: 909
4 Ever Learning.
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4 Ever Learning.
Joined: Jan 2012
Posts: 909 |
You may want to check the ets switches in the shaft. Make sure RL2 on the ets board is operating correctly.
Make good choices,
JKH
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Joined: Sep 2009
Posts: 404
Administrator
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Administrator
Joined: Sep 2009
Posts: 404 |
Is this problem happening consistently or intermittently? This must be an analog AC if you have changed the speed boards. If you have a scope meter you can check your signal coming from the encoder to make sure it's clean back to the drive boards.
Just went through this with a car that had a bad governor shaft causing intermittent encoder faults. Also, check the encoder power supply to make sure it's clean. Good Luck!!
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Joined: Sep 2012
Posts: 12
stranger
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stranger
Joined: Sep 2012
Posts: 12 |
Its a Baldor 18H drive. RL2 is working properly. It happens on every run.
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Joined: Jan 2012
Posts: 909
4 Ever Learning.
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4 Ever Learning.
Joined: Jan 2012
Posts: 909 |
Garmin how did you make out with this one?
Make good choices,
JKH
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Joined: Jan 2012
Posts: 419
addict
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addict
Joined: Jan 2012
Posts: 419 |
Probably a Baldor 914 originally. Obsolete, so drive was changed to 18H Its a Baldor 18H drive. RL2 is working properly. It happens on every run. Have you checked your motion averages? (And your dictation voltage?)
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HW PM
by Chris, January 13
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