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Forums13
Topics7,385
Posts40,939
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Most Online3,137
Apr 9th, 2026
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Joined: Feb 2016
Posts: 24
stranger
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stranger
Joined: Feb 2016
Posts: 24 |
I have a TAC50-04 that is giving me a 1021 & 1687 faults. I changed the communication line to a spare shield. The elevator would run and then randomly stop and throw those faults along with a 1684 fault. Not the elevator won’t run. When trying to run on controller inspection it will fault out. On Automatic I have my INCTM & INHAM inputs active. However when I try to run it everything clicks and it tries to run but then faults out and all the Cartop inspection I/Os come on and off. Any help is appreciated.
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Joined: Dec 2015
Posts: 1,766 Likes: 11
ElevatorPractitioner
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ElevatorPractitioner
Joined: Dec 2015
Posts: 1,766 Likes: 11 |
If you’re seeing just the car top inspect I/O drop out but not INHAM then I’d try just replacing the S24 card that runs those inputs. I’d also be curious if your P24 is on that board is dipping or dropping out when this happens. Maybe a short pulling down P24.
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Joined: Apr 2019
Posts: 10
stranger
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stranger
Joined: Apr 2019
Posts: 10 |
I've had to change the ethernet cables also.
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Joined: Mar 2012
Posts: 57
wpeakjr
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wpeakjr
Joined: Mar 2012
Posts: 57 |
So this wound up being excess noise on the comm channel due to a faulty CNA card in the door controller. It would intermittently disrupt the communications with the CNA cards so it wouldn't recognize the I/O's on the cartop board. Replaced it and problem went away!
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Joined: May 2011
Posts: 487
addict
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addict
Joined: May 2011
Posts: 487 |
Wow. What kind of door controller? BiParting?
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HW PM
by Chris, January 13
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