Originally Posted by
jpawelk
The home position for the Z axis is at the top of its travel. So therefore the Z axis does go up when commanded to home. There are 3 switches per axis, 2 being overtravel switches and the 3rd being the home switch.
The brake on the Z axis motor is part of the motor. The brake is wired into TB63 and TB64.
If you are checking voltages inside the electrical cabinet, you can verify correct voltages, check between TB1 and TB2 you should have 110VAC. Check between TB12 and TB22 and you should have 24VDC.
The "big blue capacitor" is found inside the electrical cabinet. You will only have this if you have DC drive cards for the axis. It looks like a large 16 oz soda can. When the machine is in reset state you should have between 145-160VDC between the two terminals on the capacitor.
If all looks good inside the cabinet, lets try this: Power on the machine. Upon power up, reset the drives by pressing the reset button located near the emergency stop button. The press F7(PARMS), F1(SETUP), F1(LEVEL). Type in the validation code of PROTO3 and press enter. Then enter 3 for the access level. Escape to the main menu. Then press F1(HOME) and then immediately press F10(HERE). Press cycle start. (The axis will not move!) Using hdw or jog try and move the axis. Does it move???