The 3SF1 safety switches with safety-oriented communication can be directly connected using the AS-Interface bus system. The safety functions no longer have to be conventionally wired up.

With the 3SF1 safety switches the ASIsafe electronics are integrated in the switch enclosure.

Actuation

The actuator head is included in the scope of supply. For actuation from four directions it can be adjusted through 4 Г— 90°. The switches can also be approached from above.

The actuators are not included in the scope of supply of the safety switch and must be ordered separately from a choice of different versions to suit the application see Accessories.

The actuator is encoded. Simple overruling by hand or auxiliary devices is impossible.

A high-grade steel blocking insert for attaching up to eight padlocks is available for even more safety.

A rubber cap to protect the actuator entry of the actuator head from contamination is available for operation of the enclosures in dusty environments.

Tumbler

There are two versions for interlocking the actuator:

• Spring-actuated lock (closed-circuit principle) with various release mechanisms
• Solenoid-locked (open-circuit principle)

For more explanations, see "SIRIUS 3SE5, 3SE2 mechanical position switches with tumbler".

Display

The switches have a status display with 4 LEDs:

• LED 1 (green): AS-i
• LED 2 (red): FAULT
• LED 3 (yellow): F-IN1
• LED 4 (yellow): F-IN2

Connection

Connection to the AS-Interface is by means of a 4-pole M12 connector socket (plastic version) connected to the yellow AS-Interface bus cable (no additional supply of auxiliary power is required thanks to the low current consumption of the solenoid of max. 170 mA).