You cannot disconnect the motor cable(s). The axis drive board monitors the motor and this will create a fault. This will make the proverbial water more muddy.
According to the wiring schematics the axis drive gets 15VDC from the DLI board. On the X axis,it comes in on terminal 20 (wire 382). The axis drive outputs a fault at terminal 17 (wire 360). I do not know if the fault signal is high or low. Meaning that either 15VDC at wire 360 creates a fault or the lack of 15VDC creates a fault. The same terminals apply to the Y and Z axis. You can try pulling the wire off of each drive to see what happens or try jumping 17 to 20 on each drive one at a time to isolate which drive is at fault. I noted that there are seperate inputs to the FMDC which means the fist event monitor can indicate on which axis the fault lies.
George |