PF KFD2-STC5-Ex1 SMART Transmitter Power Supply

< 1-channel isolated barrier

< 24 V DC supply (Power Rail)

< Input 2-wire and 3-wire SMART transmitters and 2-wire SMART

current sources

< Output 0/4 mA ... 20 mA current sink/current source

< Terminals with test points

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

Datasheet excerpt: Technical data of  KFD2-STC5-Ex1

General specifications
Signal type		Analog input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		18 ... 30 V DC
Ripple		within the supply tolerance
Power dissipation		≤ 1 W at maximum load
Power consumption		≤ 1.6 W at maximum load
Input
Connection side		field side
Connection		terminals 1+, 2-, 3
Input signal		4 ... 20 mA
Open circuit voltage/short-circuit current		terminals 1+, 3: 23 V / 25 mA
Input resistance		max. 265 Ω terminals 2-, 3 , max. 330 Ω terminals 1+, 3
Available voltage		≥ 16 V at 20 mA ; ≥ 20 V at 4 mA , terminals 1+, 3
Output
Connection side		control side
Connection		terminals 7+, 8-, 9- (sink) terminals 7-, 8+, 9+ (source) see additional information
Load		0 ... 800 Ω
Output signal		4 ... 20 mA (overload > 25 mA)
Ripple		max. 50 µA rms
External supply (loop)		2 ... 30 V DC If the external voltage is > 19 V, a load ≥ ((V - 19) / 0.02) Ω is required. V represents the value of the external voltage. The internal 250 Ω resistor at terminal 9 can be used as a load.
Transfer characteristics
Deviation		at 20 °C (68 °F), 4 ... 20 mA ≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
	Influence of ambient temperature	≤ 0.25 µA/K
Frequency range		field side into the control side: bandwidth with 0.5 Vpp signal 0 ... 7.5 kHz (-3 dB) control side into the field side: bandwidth with 0.5 Vpp signal 0.3 ... 7.5 kHz (-3 dB)
Settling time		200 µs
Rise time/fall time		100 µs
Galvanic isolation
Output/power supply		functional insulation, rated insulation voltage 50 V AC
Indicators/settings
Display elements		LED
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Conformity
Electromagnetic compatibility		NE 21:2012 EN 61326-3-2:2008
Degree of protection		IEC 60529:2001
Protection against electrical shock		UL 61010-1:2012
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 124 x 115 mm (0.8 x 4.9 x 4.5 inch) (W x H x D) , housing type B2
	Height	124 mm
	Width	20 mm
	Depth	115 mm
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		CML 17 ATEX 2029X
	Marking	II (1)G [Ex ia Ga] IIC  II (1)D [Ex ia Da] IIIC  I (M1) [Ex ia Ma] I
	Input	[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Supply
	Maximum safe voltage	250 V (Attention! The rated voltage can be lower.)
Equipment		terminals 1+, 3-
	Voltage	26.2 V
	Voltage	27.25 V
	Current	93 mA
	Power	634 mW
Equipment		terminals 2-, 3
	Voltage	30 V
	Current	115 mA
	Power	max 1 W
	Voltage	2 V
	Current	8.5 mA
	Power	4.3 mW
Equipment		terminals 1+, 2 / 3-
	Voltage	26.2 V
	Voltage	27.25 V
	Current	115 mA
	Power	784 mW
Certificate		CML 17 ATEX 3028X
	Marking	II 3G Ex ec IIC T4 Gc
Galvanic isolation
	Input/Output	safe electrical isolation acc. to IEC/EN 60079-11:2007, voltage peak value 375 V
	Input/power supply	safe electrical isolation acc. to IEC/EN 60079-11:2007, 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
International approvals
UL approval		E106378
	Control drawing	116-0439 (cULus)
IECEx approval
	IECEx certificate	IECEx CML 17.0015X
	IECEx marking	[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I , Ex ec 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.