Accessory - KFU KFU8-SR-…W

These 1- or 2-channel switch amplifiers are suitable for intrinsically safe applications. The devices transmit binary signals of limit switches, preferably with inductive contacts (NAMUR sensors), from potentially explosive areas to safe areas.
The proximity sensor or the switch controls the save area load via a change-over relay contact. The output status changes when the status of the input signal changes. The normal output status can be reversed using switch S1. Switch S3 is used to activate or deactivate the line fault detection of the field circuit. In the event of a failure, the relays drop out and the LEDs indicate the error according to NAMUR NE44.