Switch Amplifier KFD2-SR2-Ex2.W

• 2-channel isolated barrier

• 24 V DC supply (Power Rail)

• Dry contact or NAMUR inputs

• Relay contact output

• Line fault detection (LFD)

• Reversible mode of operation

• Up to SIL 2 (SC 3) acc. to IEC/EN 61508

Stock Lists:

KFA6-SOT2-Ex2

KFA6-SR2-Ex1.W

KFA6-SR2-Ex1.W.LB

KFA6-SR2-Ex2.W

KFA6-SR2-Ex2.W.IR

KCD2-SON-Ex1

KCD2-SOT-Ex2.SP

KCD2-SR-Ex1

KCD2-SR-Ex1.LB

KCD2-SR-Ex1.LB.SP

KFD2-SOT3-Ex1.LB

KFU8-SR-Ex1.W

KFU8-SR-Ex1.W.LB

KFU8-SR-Ex2.W

KCD2-SON-Ex1.R1

KCD2-SON-Ex1.R2

KCD2-SON-Ex1.R3

KCD2-SON-Ex1.SP

KCD2-SON-Ex2

KCD2-SON-Ex2.R1

KCD2-SON-Ex2.R2

KCD2-SON-Ex2.R3

KCD2-SON-Ex2.SP

KCD2-SOT-Ex1.LB.SP

KCD2-ST-Ex1.LB.SP

KCD2-ST-Ex2.SP

KFD2-SOT3-Ex2.IO-Y1

KCD2-SR-Ex1.LB-AB

KCD2-SR-Ex2-AB

KFD2-SR2-Ex2.2S

WE77/Ex-1 115V

WE77/Ex-1 230V

WE77/Ex-2 115V

WE77/Ex-2 230V

KFD2-ELD-Ex16

KFA5-SR2-Ex2.W

KFD2-DU-Ex1.D

KFA4-SR2-Ex2.W

KFA5-DU-Ex1.D

KFA5-SOT2-Ex2

KFA5-SR2-Ex2.W.IR

KFA6-DU-Ex1.D

KFD2-SOT2-Ex2.IO-Y181008

KFA4-SR2-Ex1.W

KFA4-SR2-Ex1.W.LB

KCD2-SR-Ex2

KCD2-SR-Ex2.SP

KCD2-ST-Ex1.LB

...

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General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Systematic capability (SC)		SC 3
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		19 ... 30 V DC
Ripple		≤ 10 %
Rated current		≤ 50 mA
Power dissipation		≤ 1 W
Power consumption		≤ 1 W
Input
Connection side		field side
Connection		terminals 1+, 2+, 3-; 4+, 5+, 6-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 8 V DC / approx. 8 mA
Switching point/switching hysteresis		1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection		breakage I ≤ 0.1 mA , short-circuit I > 6 mA
Pulse/Pause ratio		min. 20 ms / min. 20 ms
Output
Connection side		control side
Connection		output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Output I, II		signal, relay
Contact loading		250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load
Minimum switch current		2 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		107 switching cycles
Collective error message		Power Rail
Transfer characteristics
Switching frequency		≤ 10 Hz
Galvanic isolation
Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
Display elements		LEDs
Control elements		DIP switch
Configuration		via DIP switches
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010+A1:2019+A1:2019/AC:2019
Conformity
Electromagnetic compatibility		NE 21:2017 , EN 61326-3-1:2017 , EN IEC 61326-3-2:2018
Degree of protection		IEC 60529:1989+A1:1999+A2:2013
Functional safety		IEC/EN 61508:2010
Input		EN 60947-5-6:2000
Ambient conditions
Ambient temperature		-20 ... 70 °C (-4 ... 158 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 150 g
Dimensions		20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
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 2080
	Marking	II (1)G [Ex ia Ga] IIC  II (1)D [Ex ia Da] IIIC  I (M1) [Ex ia Ma] I
	Input	Ex ia
	Voltage	10.5 V
	Current	13 mA
	Power	34 mW (linear characteristic)
Supply
	Maximum safe voltage	253 V AC / 125 V DC (Attention! Um is no rated voltage.)
Output
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
Fault indication output
	Maximum safe voltage	40 V DC (Attention! Um is no rated voltage.)
Certificate		PF 08 CERT 0803
	Marking	II (3)G [Ex ic Gc] IIC
Input		Ex ic
	Voltage	10.5 V
	Current	13 mA
	Power	34 mW (linear characteristic)
Certificate		TÜV 99 ATEX 1493 X
	Marking	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+AC:2020 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN IEC 60079-15:2019
International approvals
FM approval
	FM certificate	FM19US0207X
	Control drawing	116-0035
UL approval		E106378
	Control drawing	116-0473 (cULus)
	Contact loading	250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 30 V DC/2 A resistive load
IECEx approval
	IECEx certificate	IECEx PTB 11.0034 , IECEx TUN 19.0013X
	IECEx marking	[Ex ia Ga] IIC [Ex ia Da] IIIC [Ex ia Ma] I Ex ec nC IIC T4 Gc
General information
Supplementary information		Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications