Installing Your Controller
1–5
Using Emergency-Stop Switches
When using emergency-stop switches, adhere to the following points:
•
Do not program emergency-stop switches in the controller program. Any
emergency-stop switch should turn off all machine power by turning off the
master control relay.
•
Observe all applicable local codes concerning the placement and labeling of
emergency-stop switches.
•
Install emergency-stop switches and the master control relay in your system.
Make certain that relay contacts have a sufficient rating for your application.
Emergency-stop switches must be easy to reach.
•
In the following illustration, input and output circuits are shown with MCR
protection. However, in most applications, only output circuits require MCR
protection.
Hardware
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