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PLC Safety Interlock: Dual-Channel E-Stop on GuardLogix

September 12, 2026January 29, 2024 by PLC

Timing chart of a dual channel E-stop: channel A opens, channel B follows shortly after inside the discrepancy time, the safety output drops at once, the E-stop is released, and the output only returns after the reset button is pressed and released

When a standard interlock is not enough, how to wire and configure a dual-channel E-stop on GuardLogix safety I/O, and the reset rule nobody may break.

Categories Articles, Safety PLC Tags GuardLogix, iso 13849, Safety, safety i/o, siemens f-cpu

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