Pepperl+Fuchs KFD2-SCD-Ex1.LK 223998

Manufacturer

Pepperl+Fuchs

Name

KFD2-SCD-Ex1.LK

Part number

223998

Country

Germany

Type

Current Driver

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This isolated barrier is used for intrinsic safety applications. It drives SMART I/P converters, electrical valves, and positioners in hazardous areas. Digital signals are superimposed on the analog values at the field or control side and are transferred bi-directionally. Current transferred across the DC/DC converter is repeated at terminals 1 and 2. An open field circuit presents a high input impedance to the control side to allow lead breakage monitoring by control system. If the loop resistance for the digital communication is too low, an internal resistor of 250 Ω between terminals 8 and 9 is available, which may be used as the HART communication resistor. Sockets for the connection of a HART communicator are integrated into the terminals of the device.

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General specifications
Signal type	Analog output
Functional safety related parameters
Safety Integrity Level (SIL)	SIL 2
Supply
Connection	Power Rail or terminals 11+, 12-
Rated voltage	20 ... 35 V DC
Ripple	within the supply tolerance
Power dissipation	1.1 W at 20 mA into 10 V (equivalent to 500 &Omega,) load
Power consumption	1.3 W
Input
Connection side	control side
Connection	terminals 7-, 8+
Voltage drop	approx. 4 V or internal resistance 200 &Omega, at 20 mA
Input resistance	> 100 k&Omega,, when wiring resistance in the field 800 &Omega, at 20 mA
Current	4 ... 20 mA limited to approx. 25 mA
Output
Connection side	field side
Connection	terminals 1+, 2-
Current	4 ... 20 mA
Load	100 ... 700 &Omega,
Voltage	&ge, 14 V at 20 mA
Transfer characteristics
Accuracy	0.1 %
Deviation
	After calibration	at 20 °C (68 °F): &le, ± 0.1 % incl. non-linearity and hysteresis
	Influence of ambient temperature	&le, ± 20 ppm/K
Rise time	< 100 µ,s at bounce from 10 ... 90 %
Galvanic isolation
Input/power supply	basic insulation acc. to EN 50178, rated insulation voltage of 50 V AC
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)
Conformity
Insulation coordination	EN 50178:1997
Galvanic isolation	EN 50178:1997
Electromagnetic compatibility	NE 21:2006
Degree of protection	IEC 60529:2001
Ambient conditions
Ambient temperature	-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection	IP20
Connection	screw terminals
Mass	approx. 100 g
Dimensions	20 x 115 x 115 mm (0.8 x 4.5 x 4.5 inch) , housing type B1
Mounting	on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate	BAS 00 ATEX 7215
	Marking	II (1)G [Ex ia Ga] IIC , II (1)D [Ex ia Da] IIIC , I (M1) [Ex ia Ma] I
	Output	Ex ia IIC, Ex iaD
	Voltage	25.2 V
	Current	93 mA
	Power	0.58 W
Supply
	Maximum safe voltage	250 V rms (Attention! The rated voltage can be lower.)
Certificate	TÜV 99 ATEX 1499 X
	Marking	II 3G Ex nA II T4 [device in zone 2]
Galvanic isolation
	Input/Output	safe electrical isolation acc. to EN 60079-11, voltage peak value 375 V
	Output/power supply	safe electrical isolation acc. to EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
FM approval
	Control drawing	116-0129
UL approval
	Control drawing	116-0173 (cULus)
IECEx approval	IECEx BAS 16.0045
	Approved for	[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
General information
Supplementary information	Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Accessories
Optional accessories	- power feed module KFD2-EB2(.R4A.B)(.SP) - universal power rail UPR-03(-M)(-S) - profile rail K-DUCT-BU(-UPR-03)