Mike_
Cast Iron
- Joined
- Dec 3, 2010
- Location
- Kansas City KS
I thought I had figured the tool changers on these machines out, but I guess I was wrong. We just bought a new mill and the tool changer has been the biggest problem!
These machines use two servo drives for the tool changer, one rotates a tool belt and the other moves an arm that loads the spindle. Both of the batteries in these drives were dead, so I replaced them. After that I was getting an absolute position alarm on the drives. Mazak includes a little program "J2ctbus" that teaches these drives their parameters and home positions again, I did that and now neither of the drives are flashing any alarms.
The machine is still stuck with a few alarms though, and that's where I'm stuck. The alarms I'm getting are "310 - Tool Holder Sol. All off Malf." "292 - No unload (arm/shifter pos error)" "293 - No Tool Unload (mag pos error)" and "368 - holder up incomplete."
Some of these came from jerking around with the machine, others were already there. After resetting the absolute positions in the servo drives the only alarm we were getting was 292, arm/shifter pos error. We could move the tool changer arm around with the F0 menu keys, but we couldn't orient the spindle, home the z, or get the arm to go through one full revolution though it would move a bit.
Then we messed with the magazine for some reason, somehow it ended up between two tool pockets when someone hit the soft key for "tool holder up" Now the tool holder is trying to go up in between two pockets on the belt. It's ignoring the tool holder down soft key, and the magazine lost it's position after that fiasco.
Both drives are still showing as OK, they both still have absolute position. I can't reteach the absolute position from the j2ctbus program any more. All of the alarms are yellow and will clear with a reset except for the "310 - tool holder sol. all off malf." alarm. It is in red and automatically re-sets itself. The yellow alarms will re-set with any tool changer commands.
Now that I've got to thinking a bit I think the 310 alarm might be a popped thermal reset switch, I'll have to go check on that. I'm still not entirely sure how to get the tool arm and magazine to home out though, and I think it might be a setting in the privileged parameters that turns on the "ATC home" softkeys.
Anyway, I figured I'd ask in case anyone knew the process off the tops of their heads. I'll keep pluggin' away at it in the meantime!
These machines use two servo drives for the tool changer, one rotates a tool belt and the other moves an arm that loads the spindle. Both of the batteries in these drives were dead, so I replaced them. After that I was getting an absolute position alarm on the drives. Mazak includes a little program "J2ctbus" that teaches these drives their parameters and home positions again, I did that and now neither of the drives are flashing any alarms.
The machine is still stuck with a few alarms though, and that's where I'm stuck. The alarms I'm getting are "310 - Tool Holder Sol. All off Malf." "292 - No unload (arm/shifter pos error)" "293 - No Tool Unload (mag pos error)" and "368 - holder up incomplete."
Some of these came from jerking around with the machine, others were already there. After resetting the absolute positions in the servo drives the only alarm we were getting was 292, arm/shifter pos error. We could move the tool changer arm around with the F0 menu keys, but we couldn't orient the spindle, home the z, or get the arm to go through one full revolution though it would move a bit.
Then we messed with the magazine for some reason, somehow it ended up between two tool pockets when someone hit the soft key for "tool holder up" Now the tool holder is trying to go up in between two pockets on the belt. It's ignoring the tool holder down soft key, and the magazine lost it's position after that fiasco.
Both drives are still showing as OK, they both still have absolute position. I can't reteach the absolute position from the j2ctbus program any more. All of the alarms are yellow and will clear with a reset except for the "310 - tool holder sol. all off malf." alarm. It is in red and automatically re-sets itself. The yellow alarms will re-set with any tool changer commands.
Now that I've got to thinking a bit I think the 310 alarm might be a popped thermal reset switch, I'll have to go check on that. I'm still not entirely sure how to get the tool arm and magazine to home out though, and I think it might be a setting in the privileged parameters that turns on the "ATC home" softkeys.
Anyway, I figured I'd ask in case anyone knew the process off the tops of their heads. I'll keep pluggin' away at it in the meantime!