The BOSS 8 has large chokes (electrical devices that look like transformers) on the drives. They "sing" very load when the drives are on. Enable the drives as you have done then go to jog. Jog each axis off the home switch. They will move very slowly and stop when they are off the switch. The exception is the Z axis. I believe there is a software flaw that allows a quill up before the machine is homes. If this happens, then the Zaxis can jam. The front panel box is hinged and can be moved away from the head. there is a metal plate held by 4 phillips head screws behind it. This covers the Z axis limit switches and the Z axis home switch. There is a plate attached to the quill to actuate these switches. If the Zaxis jams, you will also find this plate bent and will have to be corrected. BUT to release the z axis, I usually have to grab the motor pulley with a pair of "channel locks" and use a bit of force to move it. Looking from the top, this pulley moves CCW. I mention all this only in case you need to know. Do you have the Maintenance manual? Look at the wiring diagram. In the cabinet in the back, there is a terminal strip that runs left to right. You can see where the 24VDC stops and know which switch is open by looking at the wire numbers on the wiring diagram.
keep us posted.
George W.  |