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#30199 - 11/19/20 02:04 PM Swift Futura error 24  
Joined: Aug 2016
Posts: 732
Jluff Offline
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Jluff  Offline
old hand

Joined: Aug 2016
Posts: 732
I have a 5 stop swift Futura. Mg.traction It trips out On error 24 only in the down direction. It will stop immediately and level to closest floor. I replaced the scrs. Didn’t fix it. I’m thinking reg board is the problem. Anybody see this before ? 24 is a drive fault. It indicates a tach fault from reg board it occurs with excessive variance between analog demand velocity and analog tach reference velocity

#30201 - 11/19/20 11:58 PM Re: Swift Futura error 24 [Re: Jluff]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
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elmcannic  Offline
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Joined: Dec 2010
Posts: 566
S. Central Utah
You’ve done the first things;
Tape guides.
Encoder/tach coupling (motor and encoder). Assuming the encoder is on the motor end shaft.
Tach/encoder wiring in the drive unit tight.

This happens anywhere in the hoistway in the down direction? High speed or roll off to high speed (acceleration profile)?

No other faults whatsoever?
Can you set the RVU to capture the error 24 and then review the recording?

#30205 - 11/20/20 08:01 PM Re: Swift Futura error 24 [Re: elmcannic]  
Joined: Aug 2016
Posts: 732
Jluff Offline
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Jluff  Offline
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Joined: Aug 2016
Posts: 732
Yes. I did the preliminary checks on guides, coupling etc.. it happens anywhere in the down direction. It happens before it hits high speed. Usually in the first few seconds. There are other faults error 10. Digital tach error. Error 58 fault condition drive Mg or trim / scr

#30210 - 11/23/20 02:42 AM Re: Swift Futura error 24 [Re: Jluff]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
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elmcannic  Offline
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Joined: Dec 2010
Posts: 566
S. Central Utah
First few seconds huh? That’s quick enough to still be in the mid leveling zone id think.
Do you have job prints? Other than the Regulator Board, maybe look at the modules in the down direction high speed circuit.
Do you have a second unit to swap tach with?
No RVU to trap a fault?
Hopefully you’ve got the set up manual for the regulator.

IIRC, 58, 94 almost always show on any fault condition.


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