SMART Current Driver KFD2-SCD2-Ex1.LK

Datasheet excerpt: Technical data of  KFD2-SCD2-Ex1.LK

General specifications
Signal type		Analog output
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		≤ 30 mA at 24 V
Power dissipation		≤ 600 mW at 20 mA and 500 Ω load
Power consumption		≤ 700 mW
Input
Connection side		control side
Connection		terminals 7-, 8+, (9+)
Input signal		4 ... 20 mA , limited to approx. 30 mA
Input voltage		open loop voltage of the control system ≤ 30 V
Voltage drop		approx. 6 V at 20 mA
Input resistance		field wiring open circuit : > 100 kΩ field wiring < 50 Ω : > 100 kΩ when using terminals 1 and 2
Output
Connection side		field side
Connection		terminals 1+, 2- terminals 3+, 2- (no short circuit detection)
Voltage		≥ 13 V at 20 mA
Current		4 ... 20 mA
Load		100 ... 650 Ω , for terminals 1, 2 0 ... 550 Ω , for terminals 2, 3
Ripple		20 mV rms
Line fault detection		breakage, load > 100 kΩ, short-circuit, load < 50 Ω
Fault indication output
Output type		open collector transistor (internal fault bus)
Transfer characteristics
Deviation		at 20 °C (68 °F), 4 ... 20 mA < 0.1 % of full scale, incl. non-linearity and hysteresis
	Influence of ambient temperature	< 2 µA/K (-20 ... 70 °C (-4 ... 158 °F)); < 4 µA/K (-40 ... -20 °C (-40 ... -4 °F))
Frequency range		field side into the control side: bandwidth with 0.5 Vpp signal 0 ... 3 kHz (-3 dB) control side into the field side: bandwidth with 0.5 Vpp signal 0 ... 3 kHz (-3 dB)
Rise time		10 to 90 % ≤ 10 ms
Galvanic isolation
Input/Output		basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supply		basic 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
Indicators/settings
Display elements		LEDs
Labeling		space for adhesive label at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Conformity
Electromagnetic compatibility		NE 21:2017 EN 61326-3-2:2018
Degree of protection		IEC 60529
Protection against electrical shock		UL 61010-1:2012
Ambient conditions
Ambient temperature		-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 115 g
Dimensions		20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) , 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		BAS 00 ATEX 7240 X
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Output	Ex ia, Ex iaD
	Voltage	25.2 V
	Current	93 mA
	Power	585.3 mW
	Internal capacitance	1.05 nF
	Internal inductance	0
Supply
	Maximum safe voltage	250 V rms (Attention! The rated voltage can be lower.)
Input
	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
Galvanic isolation
	Input/Output	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
	Output/power supply	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2018 , EN 60079-11:2012 , EN 60079-15:2005
International approvals
UL approval		E106378
	Control drawing	116-0345 (cULus)
IECEx approval
	IECEx certificate	IECEx BAS 04.0014X
	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.

Documents: KFD2-SCD2-Ex1.LK

CAD+CAE: KFD2-SCD2-Ex1.LK

Approvals+Certificates: KFD2-SCD2-Ex1.LK

Associated Products: KFD2-SCD2-Ex1.LK

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Accessories
KF-ST-5GN Terminal Block 3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces greenpa
KF-ST-5BU Terminal Block 3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces bluepa
KF-CP Coding Pins Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa

Function: KFD2-SCD2-Ex1.LK

This isolated barrier is used for intrinsic safety applications.

The device drives SMART I/P converters, electrical valves, and positioners in hazardous areas.

Digital signals are superimposed on the analog values at the field side or control side and are transferred bi-directionally.

Current transferred across the DC/DC converter is repeated at terminals 1 and 2. Terminals 2 and 3 are used when no short circuit detection is required.

An open or short field circuit presents a high impedance to the control side to allow alarm conditions to be monitored by the control system.

If the HART communication resistance in the loop is too low, the internal resistance can be used.

Test sockets for the connection of HART communicators are integrated into the terminals of the device.

A fault is signalized by LEDs and a separate collective error message output.