Pepperl+Fuchs KFD2-SR2-Ex1.W.LB Switch Amplifier
This Pepperl+Fuchs KFD2-SR2-Ex1.W.LB Switch Amplifier / Isolated Barrier is used for intrinsically safe applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to a safe area.
Features:
- 1-channel isolated barrier
- 24 VDC supply (power rail)
- Dry contact or NAMUR inputs
- Relay contact output
- Fault relay contact output
- Line fault detection (LFD)
- Reversible mode of operation
- Up to SIL2 acc. to IEC 61508
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, the relays revert to their de-energised state and the LEDs indicate the fault according to NAMUR NE44. A unique collective error messaging feature is available when used with the Power Rail system.
KFD2-SR2-Ex1.W.LB Specifications:
Depth | 115mm |
|---|---|
ETIM Class | NAMUR switching amplifier |
ETIM Group | Sensors |
Height | 119mm |
Number of Channels | 1 |
Number of Inputs, according to NAMUR | 1 |
SIL according to IEC 61508 | 2 |
Type of Electric Connection | Screw connection |
Type of Power Supply | Active |
Width | 20mm |
Alternative Part Number | 203351 |
Tariff Code | 85044082 |
Generic Code | PFPA30 |
Approved for | [Ex ia] IIC , [Ex ia] IIIC , [Ex ia] I |
