SMART Transmitter Power Supply KFD2-STC5-Ex1

• 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
• Up to SIL 2 acc. to IEC/EN 61508
  

  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		0/4 ... 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		0/4 ... 20 mA (overload > 25 mA)
  Ripple		max. 50 μA rms
  External supply (loop)		2 ... 30 V DC
  Transfer characteristics
  Deviation		at 20 °C (68 °F), 0/4 ... 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
  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 Uo	26.2 V
  	Voltage Uq	27.25 V
  	Current Io	93 mA
  	Power Po	634 mW
  Equipment		terminals 2-, 3
  	Voltage Ui	30 V
  	Current Ii	115 mA
  	Power Pi	max 1 W
  	Voltage Uo	2 V
  	Current Io	8.5 mA
  	Power Po	4.3 mW
  Equipment		terminals 1+, 2 / 3-
  	Voltage Uo	26.2 V
  	Voltage Uq	27.25 V
  	Current Io	115 mA
  	Power Po	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