different control sources powerflex 525

Prayder · Apr 23, 2019

we have a powerflex 525 speed reference 1 set to 0-10 v input and speed reference 2 set to ethernet ip but when enabled in the program the drive still runs off the set speed of the potentiometer. We are wanting the main control source to be the pot but when a foot switch is pushed for the outfeed frequency to change to a preset speed we determine in the plc. The pot is wired directly to the drive.

janner_10 · Apr 23, 2019

Piece on the Knowledge Base:

Everyone can view.

https://rockwellautomation.custhelp.com/app/answers/detail/a_id/587522

Change to suit your requirements.

tarik1978 · Apr 23, 2019

check this technote

owerFlex 520-Series drives: switching speed reference sources
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/634225

Prayder · Apr 24, 2019

Unfortunately none of those have worked for me. I am at a loss. I know there is a way to control drive speed from a potentiometer(main) and through ethernet(alternate).

g.mccormick · Apr 24, 2019

Is the foot pedal going into the drives DI that is set to change source1 to source2? If so, stupid question, but have you verified that the DI is wired correctly, the DI is set to source select, and that the DI is actually getting turned on when you push the pedal.

tarik1978 · Apr 24, 2019

Try this: PowerFlex 525 changing frequency command source over a Ethernet network
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/887849

Prayder · Apr 24, 2019

g.mccormick said:
Is the foot pedal going into the drives DI that is set to change source1 to source2? If so, stupid question, but have you verified that the DI is wired correctly, the DI is set to source select, and that the DI is actually getting turned on when you push the pedal.

Not sure what you mean by drives DI.

Robobob · Apr 24, 2019

Digital Input on the drive There are 4 available.

Rson · Apr 24, 2019

Is the footswitch going into a PLC?

If not, and you can wire up the footswitch to the drive, I know that anything you have wired to the DI terminals will override the POT on the drive.

Prayder · Apr 29, 2019

The foot switch is wired as an input to the PLC.

g.mccormick · Apr 29, 2019

If the switch is going to the PLC. How are you telling the drive to switch to source1 or source2?
It would be either:
1. A DO from the PLC toggles a DI on the drive. The drive DI is then programmed to be source 1/2 selector.
2. Communications from the PLC sets the source 1/2 selection in the drive.

different control sources powerflex 525

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