ACS355 max. speed?

Dear Sir,
I bought a ACS355-03E-03A and have a problem to get the max. speed with the motor.
Motor Data : 2830 min, 50Hz, 1.1Kw (see picture)

ACS355 parameters: 9906=2.5A, 9907=50Hz, 9908=2830 rpm, 9909 1.1Kw
If I set the parameter 1105 and 2008 to 50Hz the motor do run to the max. speed. I think only about 50%!
I have to setup the 1105 and 2008 to about 120-130 Hz to get the max. speed. The display then show me a rpm from about 7400!
Do I make a wrong setup with the motor ?

Many thanks for your help
Otto Haldi

How are you measuring the speed? Just the display, or are you using a tachometer of some sort? Are you saying that at settings of 50Hz, it is only running at half speed? Is that RPM measured or frequency output? Run in local only to make sure you motor is set up correctly. Be sure to set 2002 to a reasonable value so your motor doesn't come apart.

Does 9905 match motor voltage? 400V
9906 shoudl be set for 2.66A (as on motor plate), not 2.5A

Are you using the ABB Standard Macro? 9902
Is 9904 set for 3 (Scalar:Freq)?
Are you using 2 wire start/stop for control?

If you want to control speed according to analog input is you analog input wired to AI1 or Ai2??


I am a little confused on using 1105 (REF1 max) and 2008 (REF2 max)? Which REF are you using for analog in?
What is 1103 and 1106 set for?
1105 (REF1 max) tends to let me believe you are using an analog input.
What is 1104 (REF1 Min) set for and what is 2007(REF2 Max)?
Is the analog input for 4-20ma in for speed or 0-20ma? IS the dip switch

info,
stick with default except motor Volt/RPM/A for test run
select LOCAL or REMOTE

Basically first...
what is your analog in signal for speed (0-10 Vdc, 0-20 mA or 4-20 mA) and what terminals do you have it wired to?

And what is dip switch S1 set at?
This selects voltage or current for the analog inputs.
It is a small dip switch to the left of terminal 9 on the strip.

Default settings are voltage on AI1 and current on AI2.

Many thanks to all for your help.
I just have some switch on the EL1-5 inputs (see picture).

> Does 9905 match motor voltage? 400V
I will check it tomorrow.

>9906 shoudl be set for 2.66A (as on motor plate), not 2.5A
OK, I will change it

>Is 9904 set for 3 (Scalar:Freq)?
yes

>Are you using 2 wire start / stop for control?
>Which REF are you using for analog in?
no and I'm not using analog input (see picture).

>How are you measuring the speed?
I don't measure the speed!

>I am a little confused on using 1105 (REF1 max) and 2008 (REF2 max)?
The reseller of my ACS told me to do this!

>Be sure to set 2002 to a reasonable value so your motor doesn't come apart.
I set it to 3, because I don’t want to wait too long to get the max. speed.

>And what is dip switch S1 set at?
I will check it tomorrow.

If I set the value 1105 and 2008 to 50Hz same as the Motor 9907, the display
show me the following value:
A 1.7-1.8
% 33-35
rpm 2830




Hope this answer can help?
Regards
Otto

So you are using the wiring showing in the Picture?
DO yo want to change speed up and down? By how much?

Odd..your manual is different than mine...I do not show an EL1-5 but Di inputs.
And you program DI for different command functions.

Do you want the EL1 -EL5 settings to do what you have shown...And are you wired to EL1-El5 a shown? I assume you are using relays to operate EL1-El5?
Start
Speed UP
Speed dN
Reverse
Slow right (low speed)

Another thing to check is the motor wiring. You may have the motor connected for 230V but you are giving it 400V. What will happen is that the motor will saturate and the current will go very high. The drive may then be going into current limit, which it accomplishes by overriding your speed command and artificially lowering it, because reducing the speed reduces the current. It's actually a more common mistake than many people realize.

Once again, many thanks to all for your help.
I checked the asked parameters

> Does 9905 match motor voltage? 400V
Yes, I have 400V

>9906 shoudl be set for 2.66A (as on motor plate), not 2.5A
I changed it to 2.7A

>And what is dip switch S1 set at?
switch 1 is OFF, switch 2 is ON.

> What ist 1103 and 1106 set for?
1103 = 11 and 1106 = 2

The change of the value 9906 didn’t change my max. speed problem!
It is really strange that I have to set Parameters 1105 & 2008 to 120 Hz to get a high speed.
Regards
Otto

post no#7 layout for Motor Potentiometer Macro

what application you try to do.

The ACS355 is capable of running in open loop V/Hz or in Sensorless Vector. These are selected in 99.04, Motor Control Mode.

When V/Hz (Scalar) is selected, the rpm limits in 2001 and 2002 are ignored and 2007 and 2008 are used for frequency limits. When Vector is selected, 2007 and 2008 are ignored and 2001 and 2002 are used for rpm limits.

That's likely the problem here.

Maybe it would help if you explain how you want to control speed of the motor and what its function is.

Then I can help you more with settings.

"The change of the value 9906 didn’t change my max. speed problem!"
I know...I just thought the parameters of the drive should match the motor.

The Group 99 Parameters MUST match the motor nameplate data. You set the overall drive/motor limits with 20.01 and 20.02 if in Vector mode and with 20.07 and 20.08 if in Scalar V/Hz mode.

Then you set the desired min/max for Analog Input 1 in Group 11. Note that Analog Input 2 can have different min/max settings also in Group 11. The Analog Input settings must be within the limits set in Group 20.

Note that when in Local Mode and using the Keypad, the limits will be whatever is set in Group 20. There are no separate limits or scaling available for the keypad.

Again, make sure the Group 99 parameters match the actual motor nameplate. If they don't, there is no way the VFD can properly protect the motor or even operate it properly.

DickDV said:

The Group 99 Parameters MUST match the motor nameplate data. You set the overall drive/motor limits with 20.01 and 20.02 if in Vector mode and with 20.07 and 20.08 if in Scalar V/Hz mode.

Then you set the desired min/max for Analog Input 1 in Group 11. Note that Analog Input 2 can have different min/max settings also in Group 11. The Analog Input settings must be within the limits set in Group 20.

Note that when in Local Mode and using the Keypad, the limits will be whatever is set in Group 20. There are no separate limits or scaling available for the keypad.

Again, make sure the Group 99 parameters match the actual motor nameplate. If they don't, there is no way the VFD can properly protect the motor or even operate it properly.

Click to expand...

From what I understand...from previous post
He is not using any analog in. Only inputs for start,/stop and speed.