ON/OFF - Connect a button here to power on / off the relay.
TO_ZAXIS_DRIVER - Connect to the Z axis driver to controll up and down movement.
+24V - Connect to power +24V. (12v is ok also)
GND - GND.
STEP_CTR - Connect the controller here. Ex. DLC2 or LMCV4 controller.
STEP_CTR_1 - Connect the controller here. Ex. Manual or autofocus system.
RELAY - Relay
When power is off, the STEP_CTR_1 is active.
When power is on, the STEP_CTR is active.