Turn off the power supply. Disconnect the M12 cordset and verify with a multimeter that OSSD 1 and OSSD 2 are not shorted to +24VDC, 0VDC, or each other. Restart the power supply. Issue 2: LED Stays Red Even When Guard is Closed Cause: Misalignment or incorrect actuator code tracking.
You can connect up to 25 units in a single chain while maintaining Category 4 / PLe safety ratings. Technical Specifications keyence gs-11pc manual