I'm almost finished with my retrofit but have hit a snag.
I have the DMM DMB4250-8B breakout board (https://www.dmm-tech.com/DMB4250-8B_main.html)
According to the manual it says D16 and D17 can switch on a relay up to 30vdc @ 50mA (page 12 https://www.dmm-tech.com/Files/DMB42...tVer010106.pdf)
I have 12vdc in the cabinet and don't really want to add another power supply due to space so I'm working with 12 volts as the coil voltage for a magnetic contactor. Problem is, I have been unable to find a magnetic contactor at 12 volts with a coil amperage so low. The smallest one I could find is here (https://www.automationdirect.com/adc...4aAoj4EALw_wcB) and after contacting WEG they say it's 1.7w which puts it at 141mA if my math if right.
Here's my wacky idea. Can I use a small automotive 12v relay, plenty available at 50mA or under, and use that relay to turn on the magnetic contactor? Basically, run 12 volts to both and have the auto relay hooked to the breakout board and the magnetic contactor connected to the relay. BB closes the circuit when prompted, and turns on the small relay which in turn turns on the large relay.
Dumb idea???