Euchner CET4 safety switch

The CET4 safety switch from Euchner combines non-contact transponder technology with a monitored guard locking function, as well as a door monitoring output. It is based on the open-circuit current principle.

By applying voltage at the guard locking solenoid, the guard locking is activated. The door monitoring output allows the control system to recognise whether the safety door is closed or not, independently of the guard locking function. This is particularly advantageous in the case of larger installations involving several of the switches connected in series.

Whereas the user previously could not recognise which door is closed, this can now be conveniently polled via the door monitoring output on the control system. This function relieves the user from having to inspect each switch visually.

The switch is suitable both for operation as a single unit and in a series connection. A start button and a feedback loop can be optionally integrated. This makes the product a full-fledged decentralised safety solution (PLe according to EN ISO 13849-1).