None of these machines like a phase converter. One "leg" is always very unstable. Bridgeport put out a service bulletin that warranties will be voided by the use of a phase converter but some shops did not have 3 phase power. Some of the newer machines, I rewired so the phase converter wild leg went to the spindle motor only. The two stable legs went to the control and drive transformers. I would check all the fuses as the control seems to want to turn the drives on. I would especially look at the 24VDC supply, as well as the logic supply to the FMDC board. The FMDC is haning on the back of a white swing out door in the bootom right of the large cabinet. It has 8 LEDs along the top. The two green LEDs should be blinking at a dissimilar rate at one end of the string. This means it has booted correctly and is talking to the rest of the control. It turns the drives on. Check machinemanuals.net for a maintenance manual in PDF format on a CDROM. I hope all the transformers are set to 230VAC.
George W.  |