APC wont pallet change - Need help please!

[Iownacnc]

I have a Okuma MX40HA, OSP7000 control.

We are trying to give an M60 command, and nothing happens. I have confirmed ATC is on sequence #1, and APC is on Sequence #1. On the diagnostic screen, we get a 10968 APC A Position is not completed message. I have tried manually stepping the pallet changer in reverse and forward, nothing happens...

Any help would be great!

Thanks!

[Iownacnc]

I have tried bringing the Z out and cleaned chips very thoroughly...
I still cannot seem to make the Z axis A position switch...

[Superman]

- Is the ATC toolchange in mid cycle ie. in any sequence other than #1 or #5 ? ( recheck )----spindle must also be clamped
- Is the pallet comming in got 2 lights up ie W.LOAD FINISHED & set to the indexing position ?
- Is your rapid override set to zero ? <---
our MX used G30P3 & P4 for pallet positioning before doing a pallet change ie. Z goes home, ( then may move to an X&Y position ), then rotates to machine B-zero.

Check this thread for am Xmas present, posted 3 years ago
OKUMA MA40 HA variables

[Iownacnc]

Yes, I have confirmed ATC is on sequence #1, I went ahead and did a full manual ATC sequence (Just in case). It is back to #1. Rapid override is set to 0. I gave the G30P4 command (Pallet change position). I have confirmed that I have both lights on (Pallet ready, etc.). Is there a mechanical switch that might be bad? I have removed the telescoping covers on each side of the tombstone. I saw the Z axis over travel dog switch, I have confirmed that it is working with my meter. I also noticed a pneumatic solenoid, but it looks like that is not needed till APC sequence #3. I am on #1 and cannot move to sequence #2.

[Superman]

- Is there any axes wanting to move after executing the M60. ie "Distance to go" ie B rotation ( try moving all axes , and then try the M60, to see movement )
- the pallet ( in the machine ) must be able to move to the pallet change position or you will get a timeout alarm, increase the rapid rate override
- pallet base must be present on the other fork before it will lift

What solution info is given when you push the ? button ( near F1 key ) while the alarm is active ?

- I'm not with the company to be of further help, sorry

[OkumaWiz]

Superman is right, it will not change unless the home position is reached (as shown on your diagnostics page) Feedrate can not be at 0 to do this.

Which type of indexing do you have? 1 degree or full B? If you have 1 degree the pallet will try to lift to rotate and sometimes an air pressure regulator under the table needs to be adjusted.

Like Super says: are there any "Distance to go" shown?

Best regards,

[Iownacnc]

I have tried moving the axes and giving the M60 command. Nothing moves...
However, when I give G30P3 command, all axes move into position. I do have both pallets in the machine and have confirmed the pallet ready sensor is working. When I hit the ? during the alarm, it tells me that either one of the inputs are not on...

My machine has a full B axis. I am thinking about manually changing the APC sequence from 1 to 2 in the machine parameters. Then try to manually sequence to sequence #3 and see what happens. I am also interested in trying to manually unclamp the pallet, then manually lift the pallet by using the manual buttons on the hydraulic solenoids...

What do you think?

[Iownacnc]

Machine is running!

I decided to change the parameter sequence to #2 (Knowing that my pallet was actually in the correct position). Then after that, the control let me continue on to step sequence #3 and so forth. After a full manual pallet change, it is now accepting the M60 command.

Thanks!