Greetings All,
I am building out a new CNC router that utilizes the STB4100 USB Motion Control board with Mach3.
I now have all 4 steppers wired, working and verified as well as the Estop, Home, Probe and limit switches.
To keep the initial build cost down I am foregoing an inverter/spindle setup and simply allowing Mach3 to operate the Output pin to power my hand router.
Because the STB4100 has no built in relays, and because I can't find any specs on the output port current capabilities,
I have been worried about frying the board if I use the wrong type of relay.
Maybe I am just overthinking this and all relays are going to have the proper resistance to keep current draw low.
As long as I stick to a 24V DC relay.
I would love to hear from anyone who also used the STB4100 and a simple relay to power out a hand router.
My BOB: https://www.amazon.com/dp/B07KYM15PC
Relays I have been considering: https://www.amazon.com/HiLetgo-Chann.../dp/B00LW2GW7U
My router is spec'd at a 2.4A draw. So these 10A ones should hold the load without issue. One thing that was confusing was that these relays appear to require both a 24V power and a 24V signal pin. Maybe simply jumpering the two would suffice.
I also considered trying this: https://www.amazon.com/LIVISN-Contac.../dp/B0829LP662
If I am right about the signal pin, then that would alleviate that issue. But this list a coil current of 60mA where the first one lists 5mA.
Any advice would be appreciated.
Thanks