Hi Guy's,
After some advice. I bought a used Haas with electrical issues very cheap and have cleaned 20 years of grime out of it and am in the process of getting it going again. I found a failed relay on the SDIST board and a rectifier diode and a couple if dead FETS on the servo amplifiers. The amps test ok on the bench with a fake PCM signal fead into pin 1 on the connector.
I have also stripped and cleaned the z and x axis motors and replaced bearing and brushes. To do this I removed the encoders.
I now have the machine back in one pice and the Y axis with single axis home ok.
Where I jog the X or the Z axis the axis jumps about 1 inch and then I get over current alarms.
So questions:
Is the encode phased with the amateur of the motors. They didn't go back on in the same angle?
Maybe the motors have demagnetised and they are taking excessive current. Do Electro-Craft sell replacements as Haas are out of stock.
Thanks,
Ian
After some advice. I bought a used Haas with electrical issues very cheap and have cleaned 20 years of grime out of it and am in the process of getting it going again. I found a failed relay on the SDIST board and a rectifier diode and a couple if dead FETS on the servo amplifiers. The amps test ok on the bench with a fake PCM signal fead into pin 1 on the connector.
I have also stripped and cleaned the z and x axis motors and replaced bearing and brushes. To do this I removed the encoders.
I now have the machine back in one pice and the Y axis with single axis home ok.
Where I jog the X or the Z axis the axis jumps about 1 inch and then I get over current alarms.
So questions:
Is the encode phased with the amateur of the motors. They didn't go back on in the same angle?
Maybe the motors have demagnetised and they are taking excessive current. Do Electro-Craft sell replacements as Haas are out of stock.
Thanks,
Ian