PID controller with 4-20Ma remote SP

[Larsen]

Hi

I need a PID controller with the abillity to adjust setpoint remotely, with a 4-20Ma current. (Industri standard)

I've got a Siemens LOGO PLC and a lot of modules from a friend, but it can't PID. It's probably the smallest device that can be called a PLC. So I need the external PID controller.

I've searched the net for hours, to either find retired products or insane expensive ones. I can't use he ones that need the SP sat by keys.

Any of you, knows an affordable PID controller with such a property?

Thanks.

Lars

 

[The10mmKid]

Give these a read:

http://www.redlion.net/pid-controllers/t48-p48-series

We use them for their 4-20mA output.

I have no experience with their programming as we don't have nor use that option.

'da Kid

 

[The10mmKid]

http://files.redlion.net/filedepot_download/213/3901

 

[trimixdiver1]

I would look at automation direct then and ditch that Siemens crap

 

[Larsen]

Thanks for your comments.

I was very close to dump the Siemens Logo, and get me something better.

Then my PLC buddy came up with some tricks. It's now tested in water as RIMS, and it hit the SP +- 0.2C and that's fine.

This weekend i brew my Trappist Style 8% ABV Christmas Beer, so hopefully it works as intended.