SITRANS I100, isolating power supply

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• Информационные материалы

  Информационные материалы

  

  Analog input 0/4 to 20 mA

  The isolating power supplies are used for the intrinsically safe operation of 2- and 3-wire transmitters and for connecting to intrinsically safe mA sources.

  The 2- and 3-wire transmitters are supplied with auxiliary power from the transmitter supply unit.

  For 2-wire transmitters the isolators transfer the HART communication signal bidirectionally.

  Дизайн

  The HART isolating power supply is comprised of a compact plastic enclosure (IP30) and is equipped with push-in screw terminals.

  On the front are a green LED for indicating the power supply status and a red LED for signaling errors.

  The auxiliary power supply can be connected individually using push-in screw terminals or jointly for up to 40 units using pac-Bus.

  

  STRANS I100 isolating power supply, function block diagram

  Чертеж

  

  SITRANS I100 isolating power supply with HART, dimensions in mm (inch)

  Особенности

  • Active output 0/4 to 20 mA
  • Suitable for 2-, 3-wire transmitters, 2-wire HART transmitters and mA sources
  • Intrinsically safe input [Ex ia] IIC
  • Electrical isolation between input, output and auxiliary power
  • Open-circuit and short-circuit monitoring and messaging for input and output (can be switched off)
  • Installation possible in Zone 2 and Div. 2
  • Can be used up to SIL 2 (IEC 61508)

  	Zones
  	0	1	2	20	21	22
  Ex i interfaces	X	X	X	X	X	X
  Installation in			X			X

  
  
  

  Схема подключения

  

  SITRANS I100 isolating power supply with HART, connection diagram

  

  SITRANS I100 isolating power supply with HART, output configuration

  Технические данные

  SITRANS I100 Isolating Power Supplies with HART
  Ex i input
  Input signal	0/4 ... 20 mA with HART
  Functional range	0 ... 24 mA
  Max. input current for mA sources	50 mA
  Transmitter supply voltage	≥ 16 V at 20 mA (for 2-, 3-wire)
  Supply voltage residual ripple	≤ 25 mVeff
  No-load voltage	≤ 26 V
  Short-circuit current	≤ 35 mA
  Input resistance (AC impedance HART)	≈ 500 Ω
  Input resistance for mA sources	30 Ω
  Communication signal (on 2-wire transmitters)	Bidirectional HART transmission, 0.5 kHz ... 30 kHz
  Output
  Output signal	0/4 ... 20 mA with HART
  Load resistance RL	0 ... 600 Ω (terminal 1+/2-) 0 ... 379 Ω (terminal 3+/2) (with internal 221 Ω resistance for HART)
  Residual ripple	≤ 40 μAeff
  No-load voltage	≤ 15.5 V
  Communication signal	Bidirectional HART transmission, 0.5 kHz ... 30 kHz
  Response time (10% ... 90%)	≤ 25 ms
  Transmission characteristics Input/output	1:1 (0 ... 20 mA --> 0 ... 20 mA, 4 ... 20 mA --> 4 ... 20 mA)
  Measuring accuracy Accuracy, typical data expressed as % of calibrated span at UN, 23 °C
  Linearity error	≤ 0.1%
  Offset error	≤ 0.1%
  Temperature influence	≤ 0.1%/10 K
  Power supply effect within voltage range	≤ 0.01%
  Load resistance effect	≤ 0.02%
  Rated conditions
  Degree of protection of enclosure	IP30
  Degree of protection of terminals	IP20
  Ambient conditions
  Ambient temperature	-20 °C ... +60 °C/+70 °C (-4 ... +140/+158 °F) (see "Operating instructions")
  Storage temperature	-40 °C ... +80 °C (-40 ... +176 °F)
  Relative humidity (no condensation)	≤ 95%
  Electromagnetic compatibility	Tested under the following standards and regulations: EN 61326-1 Use in the industrial environment
  Design
  Screw terminals
  One-wire connection
  Rigid	0.2 ... 2.5 mm2 (0.00031 ... 0.0039 in2)
  Flexible	0.2 ... 2.5 mm2 (0.00031 ... 0.0039 in2)
  Flexible with end ferrules (without/with plastic ferrule)	0.25 ... 2.5 mm2 (0.00039 ... 0.0039 in2)
  Two-wire connection
  Rigid	0.2 ... 1 mm2 (0.00031 ... 0.00155 in2)
  Flexible	0.2 ... 1.5 mm2 (0.00031 ... 0.0023 in2)
  Flexible with end ferrules	0.25 ... 1 mm2 (0.00039 ... 0.00155 in2)
  Weight	Approx. 160 g (0.35 lb)
  Type of installation	On DIN rail according to EN 50022 (NS35/15; NS35/7.5)
  Mounting position	Vertical or horizontal
  Enclosure material	PA 6.6
  Fire protecting class (UL-94)	V0
  Auxiliary power
  Rated voltage UN	24 V DC
  Voltage range	18 ... 31.2 V
  Residual ripple within voltage range	≤ 3.6 VSS
  Rated current (UN, 20 mA)	70 mA
  Power consumption (UN, 20 mA)	1.7 W
  Power loss (at UN, RL = 250 Ω)	1.3 W
  Operation indicator	Green "PWR" LED
  Reverse polarity protection	Yes
  Undervoltage monitoring	Yes (no faulty module/output states)
  Electrical isolation
  Test voltage according to EN 60079-11
  Ex i input to output	1.5 kV AC
  Ex i input to auxiliary power	1.5 kV AC
  Ex i input to Error contact	1.5 kV AC
  Test voltage according to EN 50178
  Output to auxiliary power	350 V AC
  Error contact to auxiliary power and output	350 V AC
  Error detection Ex i input
  Open circuit	< 2 mA
  Short-circuit	> 22 mA
  Output characteristics	= Input signal
  Output current at IE = 0	IA = 0 mA
  Error detection output
  Open circuit	< 2 mA
  Error messaging Ex i input/output
  Settings (LF switch)	Activated/deactivated
  Error indication	LED red "LF"
  Error messaging and power supply failure	Contact (30 V/100 mA), closed to ground in case of error pac-Bus, floating contact (30 V/100 mA)
  Certificates and approvals
  Explosion protection ATEX
  EC type-examination certificate	DMT 03 ATEX E 010 X
  Degree of protection	II 3 (1) G Ex nA nC [ia] IIC T4 II (1) D [Ex iaD]
  Installation	In Zone 2, Div. 2 and in the safe area
  Other approvals	USA (FM) Canada (CSA) Shipping (DNV)
  Safety specifications (CENELEC)
  Max. voltage Uo	27 V
  Max. current Io	88 mA
  Max. power Po	576 mW
  Max. connectable capacitance Co for IIC/IIB	90 nF/705 nF
  Max. connectable inductance Lo for IIC/IIB	2.3 mH/14 mH
  Internal capacitance Ci and inductance Li	Negligible
  Insulation voltage Um	253 V
  When connecting mA sources:
  Max. output voltage Uo	4.1 V
  Max. connectable voltage Ui	30 V
  Max. connectable current Ii	100 mA
  Internal capacitance Ci and inductance Li	Negligible
  Additional information and value combinations	See Certifications