CNC Mahine not working....HELP/ADVICE NEEDED PLEASE!!!!

[1albobs]

Hi.
I've investigated the problem further today. Getting a parallel cable tomorrow to try that BUT I have noticed something else that I'm hoping someone can help me with.
On the G540 control unit, I have the red fault light illuminated but no power light. There is good power to the unit, resulting in no motor movements. Checked all cables and all seem fine. Any ideas please?
Best Regards,
Alan

[Clive S]

Did you do a continuity check of the estop circuit!! How about putting some pics up. ..Clive

[JAZZCNC]

Hi.
I've investigated the problem further today. Getting a parallel cable tomorrow to try that BUT I have noticed something else that I'm hoping someone can help me with.
On the G540 control unit, I have the red fault light illuminated but no power light. There is good power to the unit, resulting in no motor movements. Checked all cables and all seem fine. Any ideas please?
Best Regards,

Alan

Ok well the G540 needs continuity between pins 10 & 12 other wise Motors are disabled and why the Red light comes on, this is normally used for the E-stop circuit with normally closed switch. .!

Easy way to check this is to put a Jumper wire between pins 10 & 12. If this works then you have a broken wire or faulty switch. Pin 10 must go to ground which is Pin12 on G540 so if still not working then check the Ground wire not broke or loose.!