ACS 880-31 Limits on

Hello,

We are required to use the control panel of the drive in Remote mode as a speed reference using speed reference selection, but when doing so the maximum speed limit is not applied, although it is applied on the control panel speed reference in Local mode.

Thanks,
Mohannad

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mohannad Rank: 2727

Asked 5 months ago

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Hi

not so clear to understand: your drive is in Remote mode (I think for start/stop function) but you set by Control Panel the reference.
In this case, probably you use parameter 22.11 set to Control panel (ref. saved) and with limits set in parameter group 30 - limits.
I not have understand where you have the issue, could you better explain?

BR

Flavio

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by mohannad Rank: 2727 on 7/15/2019 1:48:07 AM | Like (0) | Report

Dear Flavio,
Yes this is exactly what we are doing, the issue now is the limits are not applied, in other words i can use a speed reference higher than maximum speed limit (30.12), but when using the drive in Local mode the limits are applied.

Thanks,
Mohannad

by Flavio Mussolin AKS expert

Rank: 4 on 7/15/2019 2:05:09 AM | Like (0) | Report

Hi
ok, try to set the same limits at parameter 30.14 ( in Hz)

by mohannad Rank: 2727 on 7/15/2019 10:21:20 PM | Like (0) | Report

It's already Done (30.14) is set to 50 Hz.

by Flavio Mussolin AKS expert

Rank: 4 on 7/15/2019 11:25:32 PM | Like (0) | Report

At what value you set parameter 30.12?

by mohannad Rank: 2727 on 7/16/2019 7:26:55 AM | Like (0) | Report

990 rpm and (99.9) is set to 990 rpm also

by Flavio Mussolin AKS expert

Rank: 4 on 7/16/2019 7:46:14 AM | Like (0) | Report

Ok
you are using SCALAR control or DTC? If you are using DTC mode have you done ID run routine?

by Flavio Mussolin AKS expert

Rank: 4 on 7/16/2019 7:49:19 AM | Like (0) | Report

if you can, could you post - even on we transfer - or other web location, the parameter file created with the drive composer SW?

by mohannad Rank: 2727 on 7/17/2019 6:20:33 AM | Like (0) | Report

I uploaded the parameter file on this link

https://www.dropbox.com/s/fzfzav9gg46kons/7E2-190710.dcparamsbak?dl=0

Thanks

by Flavio Mussolin AKS expert

Rank: 4 on 7/17/2019 6:39:27 AM | Like (0) | Report

Hi
you have parameter 22.12 - Adaptive program source - for speed ref source. In fact you have parameter 07.30 one adaptive program running.
Probably in this part of the program - not visible for my - you have the origin of your issue....

by mohannad Rank: 2727 on 7/21/2019 2:26:55 AM | Like (0) | Report

Hi,
apology, the parameter 22.12 is set to Control Panel (ref copied), this back up is taken after we tried to solve the issue using adaptive programming and apply limits by a limit block, by making a data storage as a speed reference so the operator can change from the control panel, al the other parameters are the same.

by Flavio Mussolin AKS expert

Rank: 4 on 7/21/2019 10:24:41 AM | Like (0) | Report

Hi
the drive must operate correctly also without Adaptive program, try to remove it and verify one more time the parameters at group 30

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Flavio Mussolin AKS expert

Rank: 4

Answered 5 months ago

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