I am currently working on a simple application with an MicroLogix 1500. There is a need to control a spray head (for silicone) that requires an accurate and repeatable timed output. We need to provide an accurate pulse width to trigger the spray head valve. The resolution has to be at least 5 milliseconds (at least that is what they tell me). Also, the request is that we would like to change the pulse width from an existing touch screen.
So basically I am trying to find an accurate timer that I could remotely control the time duration from the PLC.
I started going down the path of using one of the high speed outputs in PTO mode but I can't get anything longer than 1 second. I was hoping to find something that I can maybe control the timer duration with an analog output from the PLC and just trigger the timer from a regular output.
Any ideas or recommendations?
So basically I am trying to find an accurate timer that I could remotely control the time duration from the PLC.
I started going down the path of using one of the high speed outputs in PTO mode but I can't get anything longer than 1 second. I was hoping to find something that I can maybe control the timer duration with an analog output from the PLC and just trigger the timer from a regular output.
Any ideas or recommendations?