KFU8-SR-Ex2.W, Switch Amplifier

Switch Amplifier KFU8-SR-Ex2.W 2-channel isolated barrier Universal usage at different power supplies Dry contact or NAMUR inputs Relay contact output Line fault detection (LFD) Reversible mode of operation Up to SIL 2 (SC 3) acc. to IEC/EN 61508 This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to a safe area. The proximity sensor or switch controls a form C changeover relay contact for the safe area load. The normal output state can be reversed using switches S1 and S2. Switch S3 is used to enable or disable line fault detection of the field circuit. During an error condition, the relays revert to their de-energized state and the LEDs indicate the fault according to NAMUR NE44.   Datasheet excerpt: Technical data of  KFU8-SR-Ex2.W General specifications Signal type Digital Input Functional safety related parameters Safety Integrity Level (SIL) SIL 2 Systematic capabilit