Checking the Cable Connection
Check that the following cables are connected to the controller.
Type of cables
- Power cable
- Motor & encoder cable
- Extended-joint motor cable(s) and their conversion cable(s)
- Extended-joint encoder cable(s)
Powering on the controller
Turn the controller power switch on.
Never turn the motor power on.
An error message [8540467* *-axis:Encoder System Down] is displayed. Press [Cancel] of the teach pendant to clear the error.

