ACS880 starting and stopping remote/local

I am using ACS880 vfd.
If I am controlling the motor in local mode I can start and stop the motor normally and without any problems.
If I am controlling the motor in remote mode - when I give the stop signal it goes to 0.0% torque but I have a constant current of 65 A (about 30% of nominal value) and I need to restart the drive and set it in local mode to start up again. I get start inhibited if I have it still in remote control.

Can anyone please comment?

Thanks in advance,
Bjarni.

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bj Rank: 1980

Asked 24 days ago

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Hi

to give you a correct suggestion, you must let us how you have realized the remote control.
Do you have a 0-10 V as speed input?
Or you have different set the speed reference?
Could you explain how you have set the parameter groups 12 - 20 - 22?

To make us understand better, always write the model / size of your drive
If you give us more information, we can help you better

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by bj Rank: 1980 on 11/20/2018 7:36:47 AM | Like (0) | Report

Hi,
Thank you for your answer.
Speed input is through Fieldbus Profinet-IO. We use FENA-11 (Rev.N SW rev 3.11) Ethernet adapter and GSDML-V2.31-ABB-FENA-20150402 GSD file at the Simatic PLC side.

Profile PPO 4.
CW to start is 16#047F and to stop 16#047E.
Speed reference is variable, currently set at 95.2%.

The drive is set up according to following table, as recommended in FENA-11 manual, except for 50.01 is in slot 3:
Since I can not paste the hole table here I will just give you the Drive parameters for the recommended settings:
50.01, 50.04, 50.07
51.01, 51.02, 51.03, 51.04
52.01, 52.02, 52.03, 52.05
53.01, 53.02, 53.03, 53.05
51.27
19.12

Parameter 12 is for AI and not used as speed ref1 is from fieldbus A.
Parameter 20.01 = 12 fieldbus A. Other parametes in 20 are as default.
Parameter 22.11 = 4 fieldbus A ref1. Other parameters in 22 are as default.

Best regards,
Bjarni.

by bj Rank: 1980 on 11/20/2018 7:38:29 AM | Like (0) | Report

The drive is 110kW/400V w/profibus:
ABB ACS880-01-206A-3+E202+E208+K454

by Flavio Mussolin AKS expert

Rank: 4 on 11/20/2018 7:57:52 AM | Like (0) | Report

Ok
the information that you gave are now more clear to try to understand what happens on your drive.
So, I need to know the situation in this case: when you shift from local to remote, the command on Profinet is 47F? In my experience, when I made one passage from local to remote, I check first do not have any alarm on drive, then I write one reset via ProfiNet - such for example 4FE - and only after I try the new start via Profinet. First the Speed reference, then 47F.

Could you try this method and reply to me?

by bj Rank: 1980 on 11/21/2018 1:07:14 AM | Like (0) | Report

Hi,
If we have a fault signal on the drive we dont try to start it, but reset it manually via the Profinet (Manually from the HMI). When all faults are gone we can start the drive.

First we change from local to remote on the drive. The reference signal is sent continuously to the drive among the CW that is 47E before start. When starting we send CW 047F and the drive starts spinning the motor. Both drives start without failure. When we stop the drives we change the control word to 47E but the without changing the speed reference. One of the drive stops normally coasting to zero but the other stops the pump but remains with ca. 65 A currrent, and around zero torque, inhibiting restart of the pump until we have turned off the power to the drive and repowered it.

Did you reset the drive every time before start or only when you detected change from local to remote?

As the drive is in use it might take some time before we are allowed to stop it.

by Flavio Mussolin AKS expert

Rank: 4 on 11/21/2018 1:31:01 AM | Like (0) | Report

Hi
A small clarification ... are you using ProfiBus or ProfiNet?
In the drive code there is K454 which is ProfiBus, while in your post you write that it is Profinet with FENA-11. There are no big differences, but it's just for clarity.
Next, you have 2 drive. Are the both drive the same size and the both drive functioning with the same program from PLC?
If yes, try to change the adress at the drive and try to verify if the problem is persist at the same unit, or it's move at the new unit.
Other suggestion: try to compare the two program inside the drive, to check if are present different parameters, of course not to the adresses.
It is very strange that if you send the command 47E in the CW, which removes the command Ready to operate on the drive, this will continue to supply current. Try sending the 477 - hex command in the CW and let me know if anything changes

by bj Rank: 1980 on 11/21/2018 3:02:30 AM | Like (0) | Report

Hi
Im sorry the code is incorrect it is 473 NOT 454.
I will make these changes, when it is possible, and see what happens.
Thanks for your help.

by bj Rank: 1980 on 11/22/2018 7:31:52 AM | Like (0) | Report

Hi,
I did the following:
1. Exchanged FENA-11modules. The Profinet name/address moved with the modules. The problem remained at the same drive as before.
2. Exchanged the Profinet address. Drive 1 has the IO address %IW60, drive 2 address %IW72. The control of drive 1 moved to drive 2, and control of drive 2 moved to drive 1. The problem remains at the same dive as before.

Any ideas?

Thanks
Bjarni.

by Flavio Mussolin AKS expert

Rank: 4 on 11/23/2018 1:31:34 AM | Like (0) | Report

Hi
one last test, after this you need to consider probably that the drive have a problem.
Have you tried to send the 477 hex command to the drive? When you have started the both drive, they worked fine for a time or one of them have always the problem that you have described?

by bj Rank: 1980 on 11/23/2018 6:04:15 AM | Like (0) | Report

Hi,
Do you mean 477 to stop the drive and 47F to start it? I.e. force the drive to OPERATION INHIBIT?

by Flavio Mussolin AKS expert

Rank: 4 on 11/23/2018 7:24:35 AM | Like (0) | Report

Yes
exact.

by bj Rank: 1980 on 11/28/2018 12:33:18 AM | Like (0) | Report

Hi,
Is it possible to factory reset the drive?
I wanted to try to factory reset the drive if it does not work to force the drive to operation inhibit.

by Flavio Mussolin AKS expert

Rank: 4 on 11/28/2018 2:13:42 AM | Like (0) | Report

Yes
you can choose different solution in parameter 96.06.
First I suggest you to the set default setting, because in this case you not reset the motor parameter as follow:
All editable parameter values are restored to default values,
except
• motor data and ID run results
• parameter 31.42 Overcurrent fault limit
• control panel/PC communication settings
• I/O extension module settings
• fieldbus adapter settings
• encoder configuration data
• application macro selection and the parameter defaults
implemented by it
• parameter 95.01 Supply voltage
• parameter 95.09 Switch fuse controller
• differentiated defaults implemented by parameters 95.20
HW options word 1 and 95.21 HW options word 2
• user lock configuration parameters 96.100…96.102.

by bj Rank: 1980 on 11/29/2018 2:24:01 AM | Like (0) | Report

Hi,
Is it possible that the display unit, Assistant control panel, could be broken and could cause this behavior?

by Flavio Mussolin AKS expert

Rank: 4 on 11/29/2018 2:33:40 AM | Like (0) | Report

Hi
IMHO no, over all it is possible to run the drive even without a panel ... if you want to try, you must first disable the panel failure at parameter 49.05 -> no action - and then you can use the drive with the panel not connected.

by bj Rank: 1980 on 11/29/2018 3:37:11 AM | Like (0) | Report

Hi,
We tried to use 477 to stop the drive and 47F to start it. It was ok until we tried to start the drive after power on. Then it hangs in SWITCH ON INHIBIT state and waits for CW Bit0 zero.
Then we tried 476 to stop and 47F to start. The drives start and stop ok, and go to READY TO SWITCH ON state after stop and power on

Thanks for your help

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Flavio Mussolin AKS expert

Rank: 4

Answered 24 days ago

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bj Rank: 1980

Answered 24 days ago

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ACS880 starting and stopping remote/local

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