[Balkanbear]

I'm attempting to turn on a Mori Seiki SL-3 and can only get it to come on "most of the way". That is, the control is "ON", shows Z and X position but nothing will move and NO alarms are displayed.
Process: Main breaker on, E-stop release, Control On, Control On (twice or 1 long hold)

The control panel lights up Ready only when HOLDING DOWN the Control On button and as long as it is held in Z and X axis' can be homed and the spindle can be turned on. Once in a while it will stay on and function normally (Spindle on, set X and Z to Home, move both axis' manually, open/close the chuck, etc.).

I've looked at the DIAGNOSTIC screen and the CRST bit of I/O signal 701 is set to 1. The Maint book states the CRST would be caused by E-stop, Remote Reset, Reset&Rewind, or the Reset button on the panel. If Control On is pressed in and held, this 1 bit goes away. If Control On and Reset are both pushed the bit is set again. This tells me the Reset seems to work. Logic tells me the E-stop is working properly as it does shut off the motor drive contacts when pressed. The contacts on the E-stop button were checked as well and they make good contact.
Also, I/O signal/byte 001 in Diagnostics shows RST and AL (alarm) but nothing is displayed in the alarms screen. This is verified with a DMM on the reed relay on the I/O board inside the NC. The Reset&Rewind in the board is tied high at 24vDC ("If no use, short-circuit to +24v" per book), and the ERS/Remote reset is at 0v (perhaps just a dry closure)
I am at a disadvantage as I don't have the wiring diagrams and can only go by the Maintenance manual connections.

Any suggestions? Perhaps a bad component on a board that would be intermittent? Would the wiring diagrams show complete connections and thus logic?
Thanks, Balkanbear Barry

[BITTEN]

Hi Barry,

Did you ever get this machine going? I’d love to pick your brain about mine. Can’t find accurate schematics for mine and that’s definitely slowing my progress.

I'm attempting to turn on a Mori Seiki SL-3 and can only get it to come on "most of the way". That is, the control is "ON", shows Z and X position but nothing will move and NO alarms are displayed.
Process: Main breaker on, E-stop release, Control On, Control On (twice or 1 long hold)

The control panel lights up Ready only when HOLDING DOWN the Control On button and as long as it is held in Z and X axis' can be homed and the spindle can be turned on. Once in a while it will stay on and function normally (Spindle on, set X and Z to Home, move both axis' manually, open/close the chuck, etc.).

I've looked at the DIAGNOSTIC screen and the CRST bit of I/O signal 701 is set to 1. The Maint book states the CRST would be caused by E-stop, Remote Reset, Reset&Rewind, or the Reset button on the panel. If Control On is pressed in and held, this 1 bit goes away. If Control On and Reset are both pushed the bit is set again. This tells me the Reset seems to work. Logic tells me the E-stop is working properly as it does shut off the motor drive contacts when pressed. The contacts on the E-stop button were checked as well and they make good contact.
Also, I/O signal/byte 001 in Diagnostics shows RST and AL (alarm) but nothing is displayed in the alarms screen. This is verified with a DMM on the reed relay on the I/O board inside the NC. The Reset&Rewind in the board is tied high at 24vDC ("If no use, short-circuit to +24v" per book), and the ERS/Remote reset is at 0v (perhaps just a dry closure)
I am at a disadvantage as I don't have the wiring diagrams and can only go by the Maintenance manual connections.

Any suggestions? Perhaps a bad component on a board that would be intermittent? Would the wiring diagrams show complete connections and thus logic?
Thanks, Balkanbear Barry