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 switch S1. Switch S2 allows output II to be switched between a signal output or an error message output. Switch S3 is used to enable or disable line fault detection of the field circuit.
During an error condition, relays revert to their de-energized state and LEDs indicate the fault according to NAMUR NE44.
Features:
- Reliable monitoring of rotational direction.
- Additional functions like frequency conversion and limit trips in one device.
- Easy installation and configuration.
- Frequency converters monitor the rotational direction of boiler feedwater pumps, detecting a reverse rotation.
- Reliable signal transmission between your field device and the control system.
- K-System product family offers a range of modules, including intrinsically safe modules, for a wide variety of applications.
Specifications:
- 1-channel isolated barrier
- Universal usage at different power supplies
- Dry contact or NAMUR inputs
- Relay contact output
- Fault relay contact output
- Line fault detection (LFD)
- Reversible mode of operation
- Up to SIL 2 (SC 3) acc. to IEC/EN 61508
- Replaced KFA5-SR2-EX1.W.LB (#103372) and KFA6-SR2-EX1.W.LB (#103375)
Downloads:
Data Sheet
Catalog
