Originally Posted by
turkeh
Just got a used CNC table using a Gecko G540 and a Proma THC 150 for z control. Everything seems to be working fine except the THC, it reads voltage fine but doesn't output anything or light up the arc/up/down lights on the front of the unit. Same result in test mode, voltage goes up and down but no lights or output with Mach3 showing those three inputs as active high as soon as the THC has power. I'm assuming the worst and have gotten no response from Proma, but I thought maybe someone here knew of a reset procedure or worst case get a recommendation for a new THC. I do have a couple other little things to figure out on the machine, but for now the biggest step is getting a working THC.