I have a Hardinge ST-220B that I am still struggling to get up and running for the first time. To start, I have a #1 alarm (overheat) on my main spindle amp. The thermostat is NO and I have continuity in the overheat circuit all the way back to the pins in the plug on the amp side. That leaves the amp itself being the culprit, right? Is there anything I can do to test / repair short of replacing the amp?
Second, while trying to sort out that problem, I came into the shop a couple of days ago to find I had a whole list of alarms on my X axis all related to the same thing:
416: X axis disconnect
300: X axis needs zrn
306: X axis battery zero
360: X axis pulse coder
400: X axis over load
And then today additionally:
Y axis needs zrn
My batteries are fresh and did not die. I have tested the continuity of the servo feedback cable and all wires have continuity with the following exception: there are two solid black wires in the motor side plug that and only one in the amp side plug. None of the black wires have continuity. Is it possible one black wire leaves the cable sheathing and go somewhere else that I can not see, and the other is broken somewhere along the way?
Unfortunately, I do not have a wiring diagram for this machine so I'm sure what wires do what but the fact that I also lost the Y axis zero today tells me this is again a drive problem as the X and Y share the same drive.
I'm at a loss for what to do next. Any advice or direction will be greatly appreciated.
Second, while trying to sort out that problem, I came into the shop a couple of days ago to find I had a whole list of alarms on my X axis all related to the same thing:
416: X axis disconnect
300: X axis needs zrn
306: X axis battery zero
360: X axis pulse coder
400: X axis over load
And then today additionally:
Y axis needs zrn
My batteries are fresh and did not die. I have tested the continuity of the servo feedback cable and all wires have continuity with the following exception: there are two solid black wires in the motor side plug that and only one in the amp side plug. None of the black wires have continuity. Is it possible one black wire leaves the cable sheathing and go somewhere else that I can not see, and the other is broken somewhere along the way?
Unfortunately, I do not have a wiring diagram for this machine so I'm sure what wires do what but the fact that I also lost the Y axis zero today tells me this is again a drive problem as the X and Y share the same drive.
I'm at a loss for what to do next. Any advice or direction will be greatly appreciated.