Hello,
I am retrofitting a machine going from NCSTUDIO to Mach3. It has a proprietary control card built into the pc and the breakout board is nothing more than an DB15 plug breakout board.
I wired in the Homann Designs MB02 breakout board and the machine works correctly with the step/direction signals.
The proximity sensor limit switches are connected and the LEDs on the board glow dimly, and the corresponding pins in Mach3 flicker randomly.
The limit switches are NPN proximity switches and the connections are 5+ power, ground and signal, the signal being connected to the BoB input. The switches themselves work fine and mach3 sees a good strong signal when the switches are activated.
I should also point out that the tool height setter built in also randomly triggers even when the limits are unplugged.
The limit switch and tool height wiring is not shielded. Could that be the problem?
We separated the limit switch wiring and ran it straight from the switches into the control box without running next to the motor cables and it fixed the issue of false triggering but when the spindle was started the inputs flickered all over the place again.
We had to add in grounding as the 48 volt power supplies were not earthed and none of the metal work on the machine or control box was earthed. The 240 socket's earth was not connected to anything (in Australia the exposed metal should all be earthed).
I would really appreciate some help, I am about to lose the job over this and I have been struggling. I even managed to use an Arduino to process the signal and provide a clean output, but it is a terrible solution, but I was desperate.
thanks in advance,
Ash
I am retrofitting a machine going from NCSTUDIO to Mach3. It has a proprietary control card built into the pc and the breakout board is nothing more than an DB15 plug breakout board.
I wired in the Homann Designs MB02 breakout board and the machine works correctly with the step/direction signals.
The proximity sensor limit switches are connected and the LEDs on the board glow dimly, and the corresponding pins in Mach3 flicker randomly.
The limit switches are NPN proximity switches and the connections are 5+ power, ground and signal, the signal being connected to the BoB input. The switches themselves work fine and mach3 sees a good strong signal when the switches are activated.
I should also point out that the tool height setter built in also randomly triggers even when the limits are unplugged.
The limit switch and tool height wiring is not shielded. Could that be the problem?
We separated the limit switch wiring and ran it straight from the switches into the control box without running next to the motor cables and it fixed the issue of false triggering but when the spindle was started the inputs flickered all over the place again.
We had to add in grounding as the 48 volt power supplies were not earthed and none of the metal work on the machine or control box was earthed. The 240 socket's earth was not connected to anything (in Australia the exposed metal should all be earthed).
I would really appreciate some help, I am about to lose the job over this and I have been struggling. I even managed to use an Arduino to process the signal and provide a clean output, but it is a terrible solution, but I was desperate.
thanks in advance,
Ash