Temperamental spindle

[Clive S]

OK Mark Have you tried shorting the FOR (green/yellow wire) and the DCM (black wire) terminals together.

Remove them from the terminal block and link the two terminals. the motor then should run. That will prove if the relay on the bob is faulty

[mark84]

OK Mark Have you tried shorting the FOR (green/yellow wire) and the DCM (black wire) terminals together.

Remove them from the terminal block and link the two terminals. the motor then should run. That will prove if the relay on the bob is faulty

Clive, thanks so much for the detailed reply. I tried what you said, the vfd tried to accelerate up presumably too fast and makes the distinct click of a circuit breaker or similar, presumably because it misses the speed, however, as I power it down and a second click is heard as the vfd releases the spindle very briefly spins. I'm not sure where to go from here.
Thanks again for the reply Clive, it's much appreciated

[Clive S]

Clive, thanks so much for the detailed reply. I tried what you said, the vfd tried to accelerate up presumably too fast and makes the distinct click of a circuit breaker or similar, presumably because it misses the speed, however, as I power it down and a second click is heard as the vfd releases the spindle very briefly spins. I'm not sure where to go from here.
Thanks again for the reply Clive, it's much appreciated

So if I understand what you are saying. With the FOR and DCM (without the original wires connected) the spindle powered up, If then you remove the link the spindle should stop. If that is the case then check the original cables from the FOR and DCM back to the BOB and makes sure the connections are secure. A picture of the bob might help

[mark84]

So if I understand what you are saying. With the FOR and DCM (without the original wires connected) the spindle powered up, If then you remove the link the spindle should stop. If that is the case then check the original cables from the FOR and DCM back to the BOB and makes sure the connections are secure. A picture of the bob might help

Hi Clive,
I can't actually locate the breakout board, I've taken a pic of the whole cabinet, if you could spot it that'd be great!! Sorry about the bother.

[Clive S]

Ok I think that the two cables that go to the vfd that control the spindle stop/start are the one's that I have put a red ring around.

Make a note of which terminals they are connected to. Then disconnect them and check them for continuity to the vfd FOR/DCM if necessary remake the connections.

I have never used that controller but I can see Dean's influence in there .

[mark84]

Ok I think that the two cables that go to the vfd that control the spindle stop/start are the one's that I have put a red ring around.

Make a note of which terminals they are connected to. Then disconnect them and check them for continuity to the vfd FOR/DCM if necessary remake the connections.

I have never used that controller but I can see Dean's influence in there .

Thanks Clive, i'll check it out when I'm home later :D Your help is very appreciated.
Any idea why Dean isn't around by the way, I notice his account hasn't been used in months? Hopefully he is well.

[mark84]

I couldn't find any issues with the wiring, though I've taken the connections out and cleaned them before tightening up again, and it's working, I'm unsure if that's just coincidental but at least it's ok for now.
If the problem keeps happening could I move the connection to the next port across?
Thanks for your help Clive :)