Keyence GS interlock switch

When determining that a certain switch is damaged, follow the following steps:

Cut off the system power and lock the main circuit breaker (LOTO).

Remove the M12 connector of the faulty switch or cut the cable (leaving enough margin).

Record the model and coding settings (High/Low) of the old switch.

Install a new switch and re crimp or plug the wiring according to the original definition.

If the original system uses High encoding mode, perform a learning operation on the new switch (or re learn the entire system).

Power on test: Repeatedly open and close the door 10 times to confirm that the safety output logic is correct and there are no unexpected interruptions.

Fill in the maintenance record form, including replacement date, batch number, and test results.

6.3 Special Operations during Lock/Tag Out (LOTO) Period

For lock type switches, in addition to cutting off the main power supply, mechanical locking should also be performed during equipment maintenance:

Thread a specialized lock (such as a padlock) through the lock hole on the switch head to prevent the locking mechanism from retracting.

Even if accidentally powered on, the door cannot be opened, providing double protection for maintenance personnel.

Chapter 7 Compliance with Safety Standards

The GS Series series meets the following standards and can be easily integrated into PL e and SIL 3 level safety circuits:

ISO 13849-1：Category 4，PL e

IEC 61508：SIL 3

IEC 60947-5-3: Special requirements for non-contact position switches

UL 508/CSA C22.2: North American Certification

When using, users should ensure that the diagnostic coverage (DC) of external safety relays or PLC safety modules matches the switch. The built-in EDM function can monitor faults such as melting of external contactor contacts, further improving system reliability.