airpartsmfgtx
Plastic
- Joined
- Jun 29, 2014
- Location
- Arlington, TEXAS
I desperately need some help! I have a Mori Seiki SL25/B500 Turning Center with a Fanuc Series 16A MF-T6 Control.
On power up, when the servo amp initializes the x axis immediately runs away either to positive OT or negative OT switch and then the machine alarms out. I disconnected the x axis and with the motor power disconnected, everything else works fine. The z axis can be jogged and homed, the spindle runs fine, the tailstock works and the turret indexes fine. It's just the x axis that I cannot figure out. The machine got hit with a power spike a while back and the encoder was fried along with the servo amp and a few relays/fuses. I replaced the encoder (serial A pulse coder, 1,000,000P/rev) with a new one that Fanuc told me was a equivalent plug and play serial A pulse coder. The control has a new axis card and the encoder is picking up the movement of the axis correctly.
I tried switching the axis control cards inside the servo amp, the isolation amp modules, and the transistor modules between the L and M axis but the problem remains with the x axis. I also de-soldered the 3 contactors and cleaned the contacts as they were sooty (the new servo amp is used but supposedly came off a functioning machine) but the problem remains still.
I even swapped the signal cables for the x and z axis and checked the continuity of my encoder cable and everything checks good. I called Mori Seiki and Fanuc and they were of little help, so if anybody has any input or ideas I would be ever so greatful.
The servo amp is A06B-6066-H244, 2 AXIS CONTROL, ROM VERSION: 001F
On power up, when the servo amp initializes the x axis immediately runs away either to positive OT or negative OT switch and then the machine alarms out. I disconnected the x axis and with the motor power disconnected, everything else works fine. The z axis can be jogged and homed, the spindle runs fine, the tailstock works and the turret indexes fine. It's just the x axis that I cannot figure out. The machine got hit with a power spike a while back and the encoder was fried along with the servo amp and a few relays/fuses. I replaced the encoder (serial A pulse coder, 1,000,000P/rev) with a new one that Fanuc told me was a equivalent plug and play serial A pulse coder. The control has a new axis card and the encoder is picking up the movement of the axis correctly.
I tried switching the axis control cards inside the servo amp, the isolation amp modules, and the transistor modules between the L and M axis but the problem remains with the x axis. I also de-soldered the 3 contactors and cleaned the contacts as they were sooty (the new servo amp is used but supposedly came off a functioning machine) but the problem remains still.
I even swapped the signal cables for the x and z axis and checked the continuity of my encoder cable and everything checks good. I called Mori Seiki and Fanuc and they were of little help, so if anybody has any input or ideas I would be ever so greatful.
The servo amp is A06B-6066-H244, 2 AXIS CONTROL, ROM VERSION: 001F
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