Phase 2.1.1 ...
As requested I took the back of the control box and looked for loose wires. The good news ... I found one ... be bad news ... it had nothing to do with the motor issue.
I noticed a little bit of copper showing on what was suppose to be a crimped connector that would provide power to the DRO. The copper showing and my not actually seeing a crimp in the connector was enough make me curious. I gave the wire a gentile tug and it came right out of the connector.
I then took the connector out of the box for inspection. Sorry for the poor macro focus but I think it is good enough to see that the insulation had been crimped but they had missed the all important barrel of the connector completely.
I'll crimp new connectors on the DRO power cable this weekend. This will not solve the "why doesn't the motor run" issue but at least it addresses what would have been a nightmare "Why is my DRO intermittent?" challenge.
While I was in the control box I did press on the 'manual activation' black buttons on the back of the motor contactors. When pressing one of them the motor ran forward and when pressing the other the motor ran backwards. This is good, suggests that the high voltage circuit is working correctly, and the fault is in the low voltage control and safety circuit.
Given that neither the Jog button nor the Forward\Reverse Spindle Control Lever cause anything good to happen I suspect that the circuit that comes before those items associated with the Foot Brake Switch, the Spindle Shield switch or the Emergency Stop switch is messed up. That or I am failing to activate or turn on some undocumented "master" switch or safety device.
Certainly things to investigate Friday night and over the weekend.
Arvid
As requested I took the back of the control box and looked for loose wires. The good news ... I found one ... be bad news ... it had nothing to do with the motor issue.
I noticed a little bit of copper showing on what was suppose to be a crimped connector that would provide power to the DRO. The copper showing and my not actually seeing a crimp in the connector was enough make me curious. I gave the wire a gentile tug and it came right out of the connector.
I then took the connector out of the box for inspection. Sorry for the poor macro focus but I think it is good enough to see that the insulation had been crimped but they had missed the all important barrel of the connector completely.
I'll crimp new connectors on the DRO power cable this weekend. This will not solve the "why doesn't the motor run" issue but at least it addresses what would have been a nightmare "Why is my DRO intermittent?" challenge.
While I was in the control box I did press on the 'manual activation' black buttons on the back of the motor contactors. When pressing one of them the motor ran forward and when pressing the other the motor ran backwards. This is good, suggests that the high voltage circuit is working correctly, and the fault is in the low voltage control and safety circuit.
Given that neither the Jog button nor the Forward\Reverse Spindle Control Lever cause anything good to happen I suspect that the circuit that comes before those items associated with the Foot Brake Switch, the Spindle Shield switch or the Emergency Stop switch is messed up. That or I am failing to activate or turn on some undocumented "master" switch or safety device.
Certainly things to investigate Friday night and over the weekend.
Arvid