1769-OF8V output Voltage

francisanthony

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• May 14, 2012

• #1

A simple question when I use the external 24VDC suppy to 1769OF8V analog output card, is it ok to bridge the ANLG Com and the dc NEUT.

 

rdrast

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• May 15, 2012

• #2

Yes.

 

francisanthony

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• Jun 18, 2012

• #3

Running powerflex 40 with Compactlogix L32E

Iam trying to run my Inverter through the ethernet using 22comm-e card. I did a test bench setup with a .75Kw motor and everthing worked well. But when Itransfered all the setup to the real 4KW motor( My inverter is a 5HP motor), the frequency will start picking up and when it reaches 10Hz it will drop down to zero and then it starts going up to 10. This just keeps happening all the time. When I connect the small motor there it reaches my set Hz.
When I control the same inverter dirct from the keypad without the card or PLC, it works fine.

Any Idea?

 

jkerekes

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• Jun 18, 2012

• #4

Sounds like its current limiting by cutting back the speed. Did you enter the correct motor data in the drive?

 

francisanthony

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• Jun 18, 2012

• #5

I just reset to factory default first and changes the 2 parameters needed for the comm port operation, assuming the factory default will load the necessary parameters for 5HP(4kw) motor.

 

jkerekes

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• Jun 18, 2012

• #6

I think you need to enter the motor data manually. Voltage, FLA, etc. Do you get any meesages on the HIM? What amps was it running?

 

joseph_e2

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• Jun 18, 2012

• #7

The booklet that came with the drive should show you the default values for each parameter. Which model drive is it?

 

mellis

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• Jun 18, 2012

• #8

Pretty sure that factory defaults for overload is the minimum value it can be set for. There should be a "quick start" manual with the drive that shows the steps to set up a new drive. Motor nameplate data must be entered for proper operation.

 

A353322

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• Jun 18, 2012

• #9

Is this a PowerFlex 4 or 40? Either way, I've got to agree with everyone and say that you have to manually input all motor info.

 

francisanthony

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• Jun 19, 2012

• #10

Powerflex 40 with Compactlogix L32E

Hi Everyone.
Thanks for the responses. I have only Saturdays to try this out again as the plant is running with a different Inverter right now and the plant is in production.

When we shutdown on Saturday I am going to go through every parameters necessary and set it up manually.

I will keep the outcome posted after that.

 

rdrast

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• Jun 19, 2012

• #11

No matter what "Default" parameters are, you are going to have to do a motor identification run on the inverter, after setting the basic required motor parameters.

The manual does cover "Start-up" procedures, it is a good idea to at least give a shot at following them.