© Siemens AG 2007

Supply units and input isolators

SITRANS I

Output isolator HART (FSK) 7/9

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Technical specifications

Power supply Functional extra-low voltageAccording to DIN 57100, VDE0100 Part 410•With safe isolationAC < 50 V, DC < 120 VUniversal current 24 V AC/DC24 VAC Input Input signal•Current4...20mATransferred from HART (FSK) sig-nals in the Ex zoneInput resistance current HART (FSK) ± 10%, 47...63 Hz, 18...32VDCAC voltage95...253 VAC, 47...63 HzPower consumption at rated voltage•<1.4W (24VDC)•<2VA (24VAC)•<3.2VA (230VAC)Residual ripple within the specified voltage limits (DC) ≤ 270 Ω Communication range3.6...22mA U Output Output signal4...20mACharacteristicTrapezoidalLoad
SS ≤ 2.5 VElectrical isolation between•Power supply and input•Input and output•Power supply and output ≤ 750 Ω Output responseSettings4...20mA / 4...20mA•for short circuit at input0 mA•for open-circuit input0 mASignal limiting< 27mA Certificates and approvals Intrinsically safe output circuit"Intrinsically safe" type of protectionII (1) G EEx [ia/ib] IIB/IIC•EC type test certificateTÜV 99 ATEX 1480 Accuracy (related to full-scale value of output signal)Linearity External standards and guide-lines Low-voltage guidelineAccording to DIN EN 61010 ≤ 0.1%Output signal ripple< 1%Rise time T Selection and Ordering data Order No.
90 ≤ 100 msInfluencing effectRelated to full-scale value of out-put signal•of ambient temperature SITRANS I output isolator HART } 7 N G 4 1 3 - 1
7 A 1 1 Rail-mounted,input 4...20 mA,intrinsically safe input 4...20 mA, EEx ia/ib IIB/IIC ≤ 0.1%/ 10 K •of change in load resistance ≤ 0.1% / 100%•of change in supply Power supply ≤ 0.01% / 15% •24 VAC/DC (22,5 mm (0.89 inch) width) } A Design ConstructionCompact plastic housing for rail mountingWeightApprox. 0.15 kg (0.33lb)DimensionsSee „Dimensional drawings“Enclosure materialPC/GV 25Electrical connectionPlug-in screw terminals, max 2.5mm² (0.098 inch²) •95 ... 253 VAC (35 mm (1.38 inch) width) } B

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} Available ex stock. Rated operating conditions Ambient conditions Ambient temperature-20...+65 °C (-4...+149 °F)Storage temperature-40...+85 °C (-40...+185°F)Functional temperature-25...+70 °C (-13...+158°F)Degree of protection EN 60529IP20Electromagnetic compatibility•Interference immunityAccording to DIN EN 50082-2 and NAMURNE21•Emitted interferenceAccording to DIN EN 50081-2 Siemens FI 01 · 2008