Plug-in module SIRAX TI 807 Passive DC signal isolator

Transcription

1 without power supply, x- and non-x version 0102 II (1) resp. II (2) pplication The signal isolator SIRX TI 807 (Fig. 1) serves to electrically insulate the analogue DC signal in the range 0 20 m which depending on version is then converted to a current or voltage signal (0 20 m or 0 10 V). It operates passively and does not require a separate power supply, but derives the little auxiliary energy it needs from the DC signal. The series of isolators also includes intrinsically safe explosion-proof versions with either an intrinsically safe input signal [x ib] IIC or intrinsically safe output signal [x ia] IIC. They are thus suitable for use in connection with intrinsically safe equipment installed in the hazardous area. The SIRX TI 807 is supplied with two or three channels. The signal isolator fulfils all the important requirements and regulations concerning electromagnetic compatibility MC and Safe isolation (IC 1010 resp. N ). It was developed and is manufactured and tested in strict accordance with the quality assurance standard ISO Production Q is also certified according to guideline 94/9/. Fig. 1. Plug-in module SIRX TI 807 for plugging onto backplane BP 902. Features / Benefits Signal isolator plugs onto backplane (mechanically latched by fasteners), all electrical connections made to the backplane and not to the SIRX TI 807 / Thus no wiring when replacing devices lectrically insulated analogue DC signals 0 20 m / Prevents the transfer of interference voltages and currents. Solves grounding problems in meshed signal networks Highly accurate / Performs its isolating function with negligible transmission error No power supply required / Saves wiring costs and is easy to install in existing plants vailable in type of protection Intrinsic safety [x ib] IIC or [x ia] IIC (see Table 2 Data on explosion protection ) Layout and mode of operation Description of a function unit. The DC signal isolator comprises a DC chopper Z, an isolating stage T, a rectifier and an oscillator O. The chopper converts the DC input signal = 0 20 m to an C signal which is transformed with electrical insulation, rectified, smoothed and appears at the output as a DC current signal = 0 20 m (Fig. 2, left). Versions with a DC output voltage signal = 0 10 V have a resistive burden of (Fig. 2, right). The chopper is controlled by the oscillator which obtains its power from the DC signal. Z O T U V Fig. 2. Block diagram for a function unit. Camille Bauer Data sheet TI Le

2 Technical data Input signal DC current signal I Max. permissible current 0 20 m 50 m Voltage limiter Non-x version 27 V ± 5% (with zener diode) x version 18 V, ± 5% Output signal (DC current or DC voltage) DC current signal I Voltage drop U V 0 20 m < 2.8 V with standard (non-x) version < 4.7 V < 6.3 V Max. burden 1000 Ω with standard (non-x) version Limit Residual ripple Time constant Response time 1 acc. to IC 770 DC voltage signal U Voltage drop U V pprox. 40 m < 20 mv ss pprox. 3 ms pprox. 15 ms 0 10 V < 2.8 V with standard (non-x) version < 4.7 V < 6.3 V Internal resistance Limit < 26 V with standard (non-x) version < 16 V < 16 V Response time 1 acc. to IC 770 ccuracy data pprox. 15 ms rror limits < ± 0.1% (Reference value 20 m of output signal, typical linearity error included) < ± 0.2% (Reference value 10 V of output signal, typical linearity error included) Reference conditions DC current signal I mbient temperature Output burden dditional error Burden influence Temperature coefficient Installation data Housing Material of housing Designation SIRX TI 807 Mounting position lectrical connections Coding Weight 0 20 m 23 C ± 1 K 250 Ω (at DC current output signal) 5 MΩ (at DC voltage output signal) < 0.05% / 100 Ω (at DC current output signal) < 50 ppm/k Signal isolator in housing B17 for plugging onto backplane BP 902. Refer to Section Dimensional drawings for dimensions Lexan 940 (polycarbonate). Flammability Class V-0 acc. to UL 94, self-extinguishing, nondripping, free of halogen ny 96-pin connector acc. to DIN , pattern C Layout see Section lectrical connections Signal isolator supplied already coded. The rack is coded by the user by fitting the coding inserts supplied pprox kg Residual ripple Time constant < 20 mv ss pprox. 3 ms 1 This is the time which transpires before the output signal reaches the error limit of 1% for a step change of the input signal from 0 90%. 2 Data sheet TI Le Camille Bauer

3 Regulations lectromagnetic compatibility The standards DIN N and DIN N are observed Intrinsically safe cc. to DIN N lectrical design cc. to IC 1010 resp. N Protection (acc. to IC 529 resp. N ) Housing IP 40 Terminals IP 00 Contamination level 2 Overvoltage category acc. to IC 664 II Test voltage 2.3 kv, 50 Hz, 1 min. Inputs versus outputs Inputs versus inputs Outputs versus outputs Surge voltage 4.25 kv, 1.2/50 µs Inputs versus outputs Inputs versus inputs Outputs versus outputs mbient conditions Commissioning temperature 10 to 40 C Operating temperature 25 to 40 C, x 20 to 40 C Storage temperature 40 to 70 C nnual mean relative humidity 75% ltitude 2000 m max. Indoor use statement! Table 1 Order informations DSCRIPTION MRKIN 1. Mechanical design Housing B17 (for plugging onto backplane BP 902, see data sheets) 2. Version Standard (non-x) 1 [x ib] IIC, input signals intrinsically safe 2 [x ia] IIC, output signals intrinsically safe 6 3. Number of isolation channels 2 channels 2 3 channels 3 4. Output signals (1 and 2 or 1, 2 and 3) 0 20 m V, 2 channels V, 3 channels 3 Possible special versions, e.g. increased climatic rating on inquiry. Table 2 Data on explosion protection II (2) resp. II (1) Order Code Type of protection [x ib] IIC [x ia] IIC Input Output Type examination certificate L i = 24 µh C i = 0 for connection to certified intrinsically safe circuit with following maximum values U i = 30 V I i = 150 m U m = 253 V C resp. 125 V DC U m = 253 V C resp. 125 V DC U o = 15,75 V I o = 100 m P o = 400 mw linear characteristic IIC IIB L o 4 mh 15 mh C o 478 nf 2.88 µf PTB 97 TX 2102 Mounting location outside the hazardous area Camille Bauer Data sheet TI Le

4 lectrical connections SIRX TI 807 Front Fastener SIRX TI and SIRX TI Rear c b a SIRX TI Rear c b a B C B C Camille Bauer CH-5610 Wohlen Switzerland D 14 D 14 F F H 20 H 20 OSSN MTRWTT CMILL BUR SIRX TI 807 I K L M I K L M , 2, 3 = Input signals 1, 2, 3 = Output signals Plug-in module SIRX TI 807 c27 a26 a1 c2 c29 a28 a3 c4 c31 a30 a5 c6 Backplane Connecting allocation see Operating Instructions of backplanes , 2, 3 = Input signals 1, 2, 3 = Output signals Fig. 3. SIRX TI , standard (non-x) version and SIRX TI , x version, (output signals intrinsically safe). 4 Data sheet TI Le Camille Bauer

5 Plug-in module SIRX TI 807 a1 c2 c27 a26 a3 c4 c29 a28 a5 c6 c31 a30 Backplane Connecting allocation see Operating Instructions of backplanes , 2, 3 = Input signals 1, 2, 3 = Output signals Fig. 4. SIRX TI , x version, (input signals intrinsically safe). Table 3 ccessories and spare parts Description Coding comb with 12 sets of codes (for coding the backplane BP 902) Order No Operating Instructions TI B d-f-e Standard accessories 1 Operating Instructions for SIRX TI 807, in three languages erman, French, nglish 1 Coding comb with 12 sets of codes 1 Type examination certificate (only for instruments in type of protection Intrinsically safe ) Dimensional drawing 150, ,3 123,5 113,5 135, ,5 Rely on us. Fig. 5. SIRX TI 807 in housing B17. Camille Bauer argauerstrasse 7 CH-5610 Wohlen / Switzerland Phone Fax info@camillebauer.com Subject to change without notice dition Data sheet TI Le