|Power supply ready for re-installation|
Step 2, turn on CB1 to see power delivered to contactor but nothing else, verifed by testing that there is infinite resistance on the output leads. This didn't turn out so well, because the CB wouldn't click to a fully on position. It sat in the tripped position or went to off, but never engaged.
I have a bad main circuit breaker, which stops me from moving any further. I would have brought the 24VAC sequencing circuit power online next by inserting fuse F5. If that worked okay, I could try the power on switch which should close the contactor. Alas, I need the breaker replaced before I can do anything else.
|Opening waiting for power supply installation|
|Some of the connections that had to be restored|
|More power supply connections to restore|
I checked the disk drive for compatibility with the 230V mains (incoming power) I am going to use. I did this two ways, by investigating the options listed in the official 1131 parts catalog and by inspecting the motor specification plates. The results from the parts catalog shows that 60Hz machines use 115VAC motors powered through the stepdown transformer if the mains are 208 or 230, while 50HZ systems use 220V motors. The ALDs for the drive just refer to "AC voltages", as do the installation instructions for the drive. Finally, the motor itself had a plate listing 115VAC 60Hz, which is definitive.
|Stepdown transformers on right and above out of frame, power sensing relay board at left|