FAQ02382 of Safety Sensors FAQ

The interlock function sets an interlock under specific conditions. (An interlock is when the machine operation is stopped and, for Safety Light Curtains, control outputs are turned OFF.)

OMRON Safety Light Curtains have functions which use the interlock state and others that do not use the interlock state, as outlined below.

Auto Reset

Auto resetting does not use an interlock. In other words, after the power is turned ON and the Sensor beam is interrupted, the control outputs will automatically turn ON when light is incident on the Sensor.

Applicable models:

F3SN Series Safety Light Curtains

F3SH Series Safety Light Curtains

Manual Reset

In an interlock, the Sensor will hold control outputs OFF and control outputs will not turn ON even if light is incident on the Sensor. The interlock is cleared and control outputs turn ON only after light is incident on the Sensor, equipment safety has been confirmed, and a reset input has been applied.

F3SN/F3SH Series has the following three modes.

(Sensors are set to use the start/restart interlock when shipped. The setting can be changed by using the F39-MC11 Setting Console.)

1. Start/Restart Interlock

The Safety Sensor is interlocked when the power is turned ON and the Sensor beam is interrupted.

2. Start Interlock

The Safety Sensor is interlocked only after power is turned ON.

3. Restart Interlock

The Safety Sensor is interlocked only when the Sensor beam is interrupted.

Applicable models:

F3SN Series Safety Light Curtains

F3SH Series Safety Light Curtains