M
mrmatt
Hi all
Had a phone call today asking if I would have a look at a milling machine that had been switched off last night and wouldnt power back up this morning.
Its a 3 phase machine with 3 main circits
1. motor
2. slurry pump
3. traverse
Checked power at isolater all fine
checked power in at transformer seems fine
checked out of transformer seems fine. The control gear is 24v
If the machine is powered on the tungsten filament light comes on.
None of the 3 starters for the above do anything. The emergency stop button seemed a bit dodgy so checked that out and it works ok.
If i push in the contactors manually and hold in place each part functions correctly. but there is no latching
I didnt have much time to look today so I said I would go back tomorrow to have a better look
any tips on this appreciated as the wiring diagram is lost, and I am still learning thanks
Had a phone call today asking if I would have a look at a milling machine that had been switched off last night and wouldnt power back up this morning.
Its a 3 phase machine with 3 main circits
1. motor
2. slurry pump
3. traverse
Checked power at isolater all fine
checked power in at transformer seems fine
checked out of transformer seems fine. The control gear is 24v
If the machine is powered on the tungsten filament light comes on.
None of the 3 starters for the above do anything. The emergency stop button seemed a bit dodgy so checked that out and it works ok.
If i push in the contactors manually and hold in place each part functions correctly. but there is no latching
I didnt have much time to look today so I said I would go back tomorrow to have a better look
any tips on this appreciated as the wiring diagram is lost, and I am still learning thanks