I just replaced the DS307(GPD503) spindle drive on my Haas VF-1, checked the parameters, started up the machine and ran the spindle warm up program which ran fine. But when I tried to load the tools, it started giving ALARM 123 and then 122. When I opened the back panel, I could see the heating element (with metal enclosure) next to the drive getting red hot. When I powered off and powered on, the heater (regen?) gets red hot and gives me the two alarm codes. Whatz wrong? Is my wiring to the drive wrong or something else? Please help, I have demo to be shown on the machine within 2 days.
Thanks,
Harry Amble.