rookieprogrammer Posted March 15, 2013 Report Share Posted March 15, 2013 I have a 24v V570 with a negative chassis ground. For my analog inputs on the v200 snap in, it shows 0-10v input using ACM as the common. Nothing is shown on the unitronics cut sheet that shows a connection from the "CM" connection. Should I connect the "CM" to ground (negative)? Should I jumper ACM to CM to ground? Thanks! Link to comment Share on other sites More sharing options...
Walkerok Posted March 29, 2013 Report Share Posted March 29, 2013 I noticed that you did not get an answer to your question. I am assuming that you have a V200-18-e3xb type snap in module given how you asked your question. No, ACM and CM should not be jumpered. CM is to be used only if you are using a 100 Ohm PT temperature input as where you land the 3rd wire of your RTD input. ACM is to be used for analog input commons only (0-10Vdc, 0-20ma, 4-20ma). If you were to use thermocouple inputs then you would land those on the Input + and input - terminals on the E3XB. Thanks Keith Link to comment Share on other sites More sharing options...
rookieprogrammer Posted May 20, 2013 Author Report Share Posted May 20, 2013 Thanks. I had given up on Unitronics. I'm actually having quite the hard time getting support. I've got a PID problem no one can seem to help me with. Will try another post. Have spoken to you guys in MA, and I'm told there is a PID "guru" in Israel, but they won't get them involved. I'm running a PID that needs to output a PWM signal to a stepper. Got the program written by a veteran programmer, but I think this might be a little beyond his experience level. Link to comment Share on other sites More sharing options...
Emil Posted May 21, 2013 Report Share Posted May 21, 2013 Please contact me with e-mail to support@unitronics.com with some details of your application and the problem you face. I'll make my best to help you ASAP. Link to comment Share on other sites More sharing options...
Cara Bereck Levy Posted May 21, 2013 Report Share Posted May 21, 2013 Rookieprogrammer, Emil is the PID expert, so please do contact him. I apologize for the inconvenience; unfortunately you posted during national holidays here...and I guess it got piled under the backlog. I am sure Emil will get you up and running in short order. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now