Need Help!- Tornado 300 Duplomatic Turret

[yarpo]

Hi,

We have a Colchester Tornado 300 with a 12 Tool Duplomatic Turret, with Fanuc O-T B.

It was running fine until last week.
The turret continued past it's designated tool, clicking as if the pin hadn't fired enough and flagged a "Turret overheat, turret unclamped, turret solenoid, 401 servo alarm"

We managed to get it going by backing off the solenoid capscrews, so the solenoid was sticking out by a few millimeteres. This got us away enough to complete the job.

We took the solenoid out and dismantled it, noticed that the insluation was a bit wet/slimey.

We've since replaced the solenoid with a brand new one, but are getting "1019 turret solenoid" errors.

If we back the solenoid off the turret rotates and locks in.
Is this a problem with the locking pin sensor?

Need this sorted asap, got a lot of work for this machine and can't wait for an engineer to "fit me in" in a few weeks time..... HELP!

Yarpo.

[cncatj]

hi yarpo , you can try this.
Remove the round duplomatic cover from turret ,
in MDI mode command atool change ,
with the solenoid in place ,,
Using a screwdriver you must help the solenoid to lock in the right position , by pushing that locking pin
If you can do these several times then i will suspect you have a lack of voltage-current
from solenoid switching device ,

[yarpo]

Thanks for the prompt reply cncatj..

I checked the voltage across the solenoid and I'm only getting 20volts, looks like this could be the problem.

Thanks again!

[cncatj]

you have found the cause
Yarpo : How does your output pCB looks like ?

[yarpo]

Traced the fault back to the PCB. IC-1. It is constantly outputting 24v.
IC-1 also operates the chuck, but that is working fine.
Looks like we'll have to de-solder IC-1 and try and replace it, or buy a new PCB (expensive option!)