Mori Seiki Fanuc O-T Error EX357

[hrhoward]

Hello again.

I have a Mori Seiki SL-25B5 that gives me an error "EX357 Turret Index Time Up" whenever I try to index the turret.

Any ideas?

Thanks,

Heath

[underthetire]

If the turret pops out, and doesn't rotate, probably the unclamp switch. If it rotates then goes back but times out, it could be the clamp switch. You really need to check the I/O signals and see whats not right. If the machine sat for a long time, my guess is it's a clamp switch not popping out with the turret. A little WD40 works well. Those early machines do eat Bestac Boards, which is a small relay card. They are pretty cheap.

[hrhoward]

Well,
the turret pops out. The error comes up as soon as you let go of the index button.
The only switches I see on the turret are on the tail. One axial and several radial. They are are proximity switches.
What are the addresses for the I/O's?

[dbstream]

Check dgn21.2 for turret clamp fin. After turret pops out, dgn21.2 should turn to "0". If remains as "1", turret rotation is not possible. Proximity switch label as SQ14 or LS14 may be bad. Good Luck!

[hrhoward]

Check dgn21.2 for turret clamp fin. After turret pops out, dgn21.2 should turn to "0". If remains as "1", turret rotation is not possible. Proximity switch label as SQ14 or LS14 may be bad. Good Luck!

dgn21.2 does indicate that LS14 is working correctly. (changes state)

[dbstream]

Check dgn48.4 for turret index start output which turn on bestact relay KR15(inside electrical cabinet) & solenoid valve YV81(mounted above index oil motor). Either KR17 & YV91 or KR18 & YV90 should turn on for rotational output.

[hrhoward]

dbstream,
On the bestact board, which ones are KR15, 17, and 18?
I have no electrical prints.

dgn48.4 does change.

[dbstream]

KR15 is sixth "led" counting from the top. See attached

[hrhoward]

Check dgn48.4 for turret index start output which turn on bestact relay KR15(inside electrical cabinet) & solenoid valve YV81(mounted above index oil motor). Either KR17 & YV91 or KR18 & YV90 should turn on for rotational output.

Been a while but I am back on the Mori. 48.4 and KR15 both change state. KR17 & KR18 do not turn on at all.

Does anyone know anything about timers in the parameter list?

[underthetire]

You need to check the physical output of the KR15. The led on the board is just the control voltage to turn on the relay. It's the relays that fail themselves. All timer descriptions are in the back of the ladder diagram.

[hrhoward]

Well I got it.
The timers where set to 00000000.
Neet, huh?

Thanks again for the help fellas! I appreciated it.

Heath