Products

PEPPERL+FUCHS Switch Amplifier KFD2-SR2-Ex2.2S Intrinsic Safety Barriers Isolated Barriers K-System 

Switch Amplifier KFD2-SR2-Ex2.2S

2-channel isolated barrier

24 V DC supply (Power Rail)

Dry contact or NAMUR inputs

Usable as signal splitter (1 input and 2 outputs)

2 x 2 relay contact outputs with AND logic

Line fault detection (LFD)

Reversible mode of operation

Up to SIL 2 acc. to IEC 61508

Function :

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. 

Each sensor or switch controls two form A normally open relay contacts 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 deenergized 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.

Selection models:

KCD2-SR-Ex1.LB                                      KCD2-SR-Ex2                                KFA6-DU-Ex1.D

KFA6-ER-Ex1.W.LB                                  KFA6-SOT2-Ex2                             KFA6-SR2-Ex1.W

KFA6-SR2-Ex1.W.LB                                KFA6-SR2-Ex2.W                           KFA6-SR2-Ex2.W.IR

KFD2-DU-Ex1.D

KFD2-ELD-Ex16                                       KFD2-ER-Ex1.W.LB                         KFD2-SH-Ex1

KFD2-SH-Ex1.T.OP                                  KFD2-SOT3-Ex1.LB                         KFD2-SOT3-Ex1.LB.IO

KFD2-SOT3-Ex2                                       KFD2-SOT3-Ex2.IO                         KFD2-SR2-Ex1.W

KFD2-SR2-Ex1.W.LB

KFD2-SR2-Ex2.W                                    KFD2-SR3-Ex2.2S                           KFD2-SRA-Ex4

KFD2-ST3-Ex1.LB                                   KFD2-ST3-Ex2                                 KHA6-SH-Ex1

KCD2-SON-Ex1                                       KCD2-SOT-Ex1.LB                           KCD2-SOT-Ex2

KCD2-SOT-Ex2.SP

KCD2-SR-Ex1.LB.SP                               KCD2-SR-Ex2.SP                             KCD2-ST-Ex1.LB

KCD2-ST-Ex2                                          KFA5-SOT2-Ex2                               KFA5-SR2-Ex1.W

KFA5-SR2-Ex1.W.LB                               KFA5-SR2-Ex2.W                             KFA5-SR2-Ex2.W.IR

KFD2-SH-Ex1.T

KFD2-SOT3-Ex2.IO-Y1                          KCD2-SON-Ex1.R1                         KCD2-SON-Ex1.SP

KCD2-SON-Ex2                                      KCD2-SON-Ex2.R1                         KCD2-SON-Ex2.SP

KCD2-SOT-Ex1.LB.SP                           KCD2-ST-Ex1.LB.SP                        KCD2-ST-Ex2.SP

KFA4-SR2-Ex2.W