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General Mach Discussion / Limit Switches and Interference
« on: October 13, 2012, 03:23:56 AM »
First real post on the board for me!
I'm setting up the limit switches on my CNC router at the moment. They're just the simple lever type, two per axis, wired in series and normally closed. Yesterday they were working so well I sat back with a coffee to admire my success while watching the LED indicator lights up as expected on the Mach3 Diagnostics tab.
But today I've had a setback
The only difference is that I also wired up the stepper motors and gave them a spin. They worked as expected too. But just when I thought this home made CNC caper was easy, I got an unexpected limit switch trip. I can reproduce it, but it is random.
I'm wondering if the wiring to the limit switches should be shielded? At the moment it's not - could that be my problem?
Thanks.
I'm setting up the limit switches on my CNC router at the moment. They're just the simple lever type, two per axis, wired in series and normally closed. Yesterday they were working so well I sat back with a coffee to admire my success while watching the LED indicator lights up as expected on the Mach3 Diagnostics tab.
But today I've had a setback
The only difference is that I also wired up the stepper motors and gave them a spin. They worked as expected too. But just when I thought this home made CNC caper was easy, I got an unexpected limit switch trip. I can reproduce it, but it is random.I'm wondering if the wiring to the limit switches should be shielded? At the moment it's not - could that be my problem?
Thanks.