KFA6-SOT2-Ex2
1
6IJIVXS+IRIVEP2SXIW6IPEXMRKXS4ITTIVP*YGLW4VSHYGX-RJSVQEXMSR
4ITTIVP*YGLW+VSYT 97% 7MRKETSVI+IVQER]
[[[TITTIVPJYGLWGSQ TEMRJS$YWTITTIVPJYGLWGSQ TEMRJS$HITITTIVPJYGLWGSQ TEMRJS$WKTITTIVPJYGLWGSQ
Switch Amplifier
>SRI
(MZ
/*%738)\
:%'
Connection
Assembly
2-channel isolated barrier
230 V AC supply
Dry contact or NAMUR inputs
Passive transistor output, non-polarized
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 proximity sensor or switch controls a passive transistor
output for the safe area load. The normal output state can be
reversed using switch S1 for channel I and switch S2 for
channel II. Switch S3 enables or disables line fault detection of
the field circuit.
During an error condition, the transistors revert to their de-
energized state and LEDs indicate the fault according to
NAMUR NE44.
Features
13
46
2
5
13 15
12
9
10
7
14
11
8
KFA6-SOT2-Ex2
1
2
OUT CHK PWR
S2
S1
S3
III
*VSRXZMI[
7[MXGL7
0&7'QSRMXSVMRK
0)(]IPPS[
8VERWMWXSVSYXTYXI
0)(VIH
0&7'GLERRIPI
0)(]IPPS[
8VERWMWXSVSYXTYXII
0)(VIH
0&7'GLERRIPII
0)(KVIIR
4S[IVWYTTP]
6IQSZEFPIXIVQMREPW
KVIIR
6IQSZEFPIXIVQMREPW
FPYI
7[MXGL7
7[MXGL7