Not done yet, but here is a quick update.
1st method:
Using the Drive made to run DC motors works well with the electromagnets. The PWM does the job fine. I just use the potentiometer of the drive to test the electromagnets in parallel under 0V-24VDC. I shouldn't see any issues using the 0-10V...
Sorry, I should have been more clear. I was referring to a drive like this one:
https://www.automationdirect.com/adc/Shopping/Catalog/Drives/DC_Drives/Low_Voltage_(%3C_50V)_Open_Frame/GSD1-48-10C
it runs on a potentiometer but can also take 0-10V as input signal.
Thx,
Sylvain.
Thx Keith for you reply and info.
Ok for PWM.
You mentioned the SSR.
The PLC doesn't have a PWM function per say but it can be done in the ladder in few rungs (time proportional control). What period would you recommend? 50ms?
I'll get the SSR and wire a diode to protect from the inrush...
I need to control the force of 3 electromagnets wired in parallel to pick up steel discs that are piled up in a stack.
Discs range from 4" to 42" in diameter of various thicknesses (0.075" to 0.25"). 1/2 lb to 85lbs. About 30 different format total.
One stack is composed of only identical discs...
