Pepperl+Fuches KFD2-SH-Ex1 Switch Amplifier, 1-channel isolated barrier, 24 V DC supply (Power Rail), input for approved dry contacts or SN/S1N sensors.

Pepperl+Fuches KFD2-SH-Ex1 Switch Amplifier, 1-channel isolated barrier, 24 V DC supply (Power Rail), input for approved dry contacts or SN/S1N sensors.

This isolated barrier is used for intrinsic safety applications.
The device transfers digital signals (SN/S1N proximity sensors or approved dry contacts) from a hazardous area to a safe area.
The input controls one relay contact output with 3 NO contacts (one output is in series to the both output relays for the safety function), one relay contact output with one NO contact, and one passive transistor output.
Unlike an SN/S1N series proximity sensor, a mechanical contact, requires a 10 kΩ resistor to be placed across the contact in addition to a
1.5 kΩ resistor in series.
Lead breakage (LB) and short circuit (SC) conditions of the control circuit are continuously monitored.
During an fault condition, the fault indication output energizes and outputs I and II de-energize.
For safety applications up to SIL3, output I must be used. For safety applications up to SIL2, output I and output II can be used.

Technical Data
General specifications
Signal type Digital Input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 3
Performance level (PL) PL d
Supply
Connection Power Rail or terminals 22+, 23+, 24-
Rated voltage Ur 20 ... 35 V DC
Ripple ≤ 10 %
Rated current Ir ≤ 130 mA
Power dissipation 2.1 W
Power consumption max. 2.3 W
Input
Connection side field side
Connection terminals 10+, 12-
Open circuit voltage/short-circuit current approx. 8.4 V DC / approx. 11.7 mA
Lead resistance ≤ 50 Ω, in hazardous area cable capacitances and inductivities are to be taken into
account
Switching point
Relay de-energized I < 2.1 mA and I > 5.9 mA
Relay energized 2.8 mA < I < 5.3 mA Response delay ≤ 1 ms Output Connection side control side Connection output I: terminals 13, 14 ; output II: terminals 15, 21 ; output III: terminals 16+, 17- Output I relay , signal Contact loading 50 V AC/1 A/cos φ > 0.7; 24 V DC/1 A resistive load
Mechanical life 50 x 106 switching cycles
Output II relay , signal
Contact loading 50 V AC/1 A/cos φ > 0.7; 24 V DC/1 A resistive load
Mechanical life 50 x 106 switching cycles
Output III electronic output, passive , fault signal
Rated voltage 10 ... 30 V DC
Signal level 1-signal: (L+) -2.5 V (7 mA, short-circuit proof) / 0-signal: blocked output
(Leakage current ≤ 10 µA)
Transfer characteristics
Switching frequency 5 Hz
Galvanic isolation
Output/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Mutual output I, II, III basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff
Indicators/settings
Display elements LEDs
Labeling space for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EU EN 61326-1:2013 (industrial locations)
Machinery Directive
Directive 2006/42/EC EN/ISO 13849-1:2015
Conformity
Electromagnetic compatibility NE 21:2011
Degree of protection IEC 60529:2001
Safety IEC/EN 61508:2010
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection IP20
Connection screw terminals
Mass approx. 280 g
Dimensions 40 x 107 x 115 mm (1.6 x 4.2 x 4.5 inch) (W x H x D) , housing type C1
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate PTB 00 ATEX 2042
Marking 1 II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2]
Input EEx ia IIC
Voltage Uo 9.56 V
Current Io 16.8 mA
Power Po 41 mW (linear characteristic)
Supply
Maximum safe voltage Um 40 V AC/DC (Attention! The rated voltage can be lower.)
Output
Maximum safe voltage Um output I/output II: 253 V AC/DC (Attention! Um is no rated voltage.)
output III: 60 V AC/DC (Attention! Um is no rated voltage.)
Certificate TÜV 99 ATEX 1493 X
Marking 1 II 3G Ex ec nC IIC T4 Gc
Galvanic isolation
Input/Output safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supply safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EU EN IEC 60079-0:2018 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN IEC
60079-15:2019
International approvals
FM approval
Control drawing 116-0158
IECEx approval
IECEx certificate IECEx TUN 19.0013X
IECEx marking Ex ec nC IIC T4 Gc