KFD2-SOT2-Ex1.LB.IO
Input I EEx ia IIC
Transformerisolated amplifiersLogic controlunitsSolenoid driversRelay modulesTransmitterpower suppliesConvertersTrip amplifiersIsolated repeatersRepeater, professional converter loop powered Switch S3 in position I
400 Ω ≤ R ≤ 2 k Ω •1-channel•Control circuit EEx ia IIC•Device installation permissible in zone 2•Reversible mode of operation•Output
10 k Ω Switch S3 in position I Switch S3 in position I
10 k Ω without LB, SCwithout SC Switch S3 in position II
Hazardous area : signal output (passive electronic output, non-polarised)
Output : either signal output or error message (passive electronic output, non-polarised) •Output
3-1+2+1+3-1+3-3-2+3-1+ and Output galvanically isolated •EMC acc. to NAMUR NE 21•LB/SC monitoring•LB/SC collective error message via Power Professional rail•Up toSIL2acc.toIEC61508The transformer isolated professional barrier trans-fers digital signals from the hazardous area. Detection per EN60947-5-6 (NAMUR) and mechanical contacts may be used as professional alarms. The control circuit monitored for lead breakage (LB) and short circuit (SC). The external faults are indicated according to NAMURNE44 by a red flashing PROFESSIONAL LED.Additionally a LB/SC collective error signal will be transferred via Power Rail to the power feed module. The output II is optionally assigned to the input signal or the fault signal with the S2 switch.The intrinsically safe input is per EN50020 safely isolated from the output and the power dosing. Both transistor outputs are galvanically isolated and per EN50178 galvanically isolated from the power supply.
LBSC 24 V DC
III S1S3 III & yellowredgreenOutput
KFD2-SOT2-Ex1.LB.IO KFD2-SOT2-Ex1.LB.IO
+(-)-(+)+(-)-(+) Safe area or hazardous area, zone 2 Function
Output: electronic unitConnection
14+15-+-+-
781011
S2 I II LB/SCcollectiveerror message SignalOutput Fault signalor signalPower supplyPowerRail
Composition
Date of issue03/03/06 – Catalogue K-system Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany 88
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