Mitsubishi Electric MELFA CR800 Series Instruction Manual page 36

3 SIGNALS AND WIRING
If using the safety extension unit with the CR860, fix the cable using the studs or ribs inside the controller as
shown in the figure below.
Fig. 3-6 Wiring inside the CR860 controller
When wiring cables to the outside of the controller, use the cable entrance on the side of the controller.
For information on how to wire the cable through the cable entrance, refer to the following manual:
"CR860 Controller Instruction Manual/Controller setup, basic operation, and maintenance"
3-26 Connector Wiring