Variable Power Supply Control

[jenk00001]

Hello,
I am currently working on a project that requires the equipment to vary DC power output during cycle. I need to vary from ~30VDC to ~90VDC. Using a Compact Logix controller but havent seen any ethernet IP programmable power supplies out there. Anyone have a similar application or ideas? Thanks in advance.

Jenk

 

[Ken Roach]

Welcome to the PLCTalk forum community !

The most obvious solution is a PSU with an analog reference like 0-10V or 4-20 mA, and an analog output channel from an analog output module.

What is the purpose of the variable PSU voltage ? Is there a feedback loop or is this just a set-and-run open loop application ?

 

[jenk00001]

Welcome to the PLCTalk forum community !

The most obvious solution is a PSU with an analog reference like 0-10V or 4-20 mA, and an analog output channel from an analog output module.

What is the purpose of the variable PSU voltage ? Is there a feedback loop or is this just a set-and-run open loop application ?

This will be powering a battery operated tool and needs to simulate varying voltages while the tool is undergoing the main function of the machine which is a dyno. I saw a few power supplies with analog inputs but was hoping there was a unit out there to communicate over ethernet.

 

[L33er]

Check with Raytheon/Sorensen now Ametek.

 

[danw]

TDK-Lambda has some programmable power supplies


"Programmable" for the test equipment market is usually IEEE, the old parallel port control protocol.

But there are some models with optional EtherCat or Modbus/TCP.


Some form of proprietary control is probably available through 232/485/USB or whatever Iso-Analog is.

https://www.us.lambda.tdk.com/products/programmable-power/

 

[dwoodlock]

We have some Magna-power electronics supplies here and I just did a quick look up on their site and it appears they have what you're looking for.

I can also say at a previous employer we used a ton of Delta Electronica supplies for 12V automotive related testing. These had a profibus interface, and were definitely not a high maintenance item, but they were probably 10-15 year old design, so I would guess without looking them up that they probably have ethernet options these days.

 

[L33er]

Another missing piece of info is MAx Amp.