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General Specifications

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General Specifications <<Contents>> <<Index>> General Model BARD Specifications Safety Barriers GS 01B04S10-01E ■ GENERAL The BARD intrinsic safety (IS) barriers, connected to intrinsic safety devices installed in a hazardous area, configure an IS system in such a way that electric currents and voltages delivered from a safe area into a hazardous area can be limited to prevent energy A B BARD -700 generated in the IS circuit from igniting specified A B explosive gases. C BARD-820 3 2 1 12 • BARD is certified by Technology Institution of Industrial 34 Safety (TIIS), Japan. • Offered in two types: BARD-600, -700, -800, and -810 Zener barriers, and BARD-820 and -830 isolated barriers. • The BARD-600 is for use with a thermocouple and can • BARD-800 be used with double-element thermocouples. The BARD-700 is for use with a resistance temperature A CL 1 detector (RTD) and the BARD-800, -810, -820, and -830 are for use with a 4 to 20 mA signal. B 2 • The BARD-940 and -950 are power supply sets for BARD-820s and -830s. The BARD-940 consists of a C 3 single power feed unit and the BARD-950 consists of F01_6.EPS dual redundant power feed units that are mounted on a • BARD-810 DIN rail through which a power rail is running. They A 1 supply power to BARD-820s and -830s mounted on the same rail. B 2 ■ SCHEMATIC DIAGRAMS C 3 • BARD-600 F01_3.EPS • BARD-820 A 1 – Power Rail + 3 (L+) Power Supply 4 (L–) B 2 A (+) F01_1.EPS i • BARD-700 Input A 1 B (–) 1 (+) Output v 2 (–) B 2 F01_4.EPS • BARD-830 – Power Rail + 3 (L+) Power Supply C 3 4 (L–) F01_2.EPS A (+) 1 (+) Output Input B (–) 2 (–) F01_5.EPS GS 01B04S10-01E 1st Edition Apr. 2002 Yokogawa Electric Corporation <<Contents>> <<Index>> 2 ■ MODEL AND SUFFIX CODES ■ APPLICABLE CODES AND STANDARDS Model Suffix Codes Description BARD Safety barrier Japan TIIS Apparatus -6 For use with a thermocouple*1 Protection Explosion- -7 For use with an RTD*1 Model Concepts protected Type Use Use and -8 For use with a 4 to 20 mA signal*2 Construction Apparatus Grade -9 Power supply set*3 Group 00 Zener barrier BARD-600 [Ex ia] IIC For use with i3aG5 a thermocouple 10 Zener barrier for a CS multiplexer module BARD-700 [Ex ia] IIC i3aG5 For use with an RTD Isolated barrier for a transmitter with Zener 20 BARD-800 — i3aG5 Type communication functions 30 Isolated barrier for a control element BARD-810 [Ex ia] IIC — For use with a 4 to 40 With one power feed unit on a DIN rail 20 mA DC signal BARD-820 [Ex ia] IIC — Isolated With dual redundant power feed units 50 interface on a DIN rail BARD-830 [Ex ia] IIC — Style code *A Style A BARD-940 — — — Power supply set T01.EPS for BARD-820s *1: Available only with type code 00. BARD-950 — — — and BARD-830s. *2: Available with type code 00, 10, 20, or 30. T02.EPS *3: Available with type code 40 or 50. ■ SPELCIFICATIONS OF BARRIERS Item BARD-600 BARD-700 BARD-800 BARD-810 Type Zener barrier Zener barrier Zener barrier Zener barrier 4 to 20 mA DC 4 to 20 mA DC 4 to 20 mA DC Use Thermocouple RTD signal control signal monitoring signal i3aG5 (certified by TIIS, No. 55385) TIIS is the abbreviation of i3aG5 i3aG5 Construction Technology Institution (certified by TIIS, (certified by TIIS, — Grade of Industrial Safety Intrinsic No. 55386) No. 55577) safety class administered by and Ministry of Health, certificate Labor and Welfare, number Japan Protection Concepts [Ex ia] IIC [Ex ia] IIC [Ex ia] IIC and (certified by TIIS, (certified by TIIS, — (Certified by TIIS, No. C14981) Apparatus No. C15107) Japan, No. C15108) Group Vmax (Uo) 10 V 7.2 V 14.4 V 31.5 V 27.1 V Icc (Io) 100 mA 174 mA 77 mA 29.2 mA 93 mA Intrinsic Pmax (Po) 0.25 W 0.3132 W 0.2772 W 0.92 W 0.631 W safety Cext (Co) µ 0.37 µF 42 nF 0.089 µF ratings 1 F Lext (Lo) 2.2 mH 0.5 mH 4.2 mH 4.1 mH VM (Um) 250 V AC/DC 250 V AC/DC 250 V AC/DC 250 V AC/DC Leakage current 10 µA at 6.5 V 1 µA at 2.5 V 10 µA at 28 V 10 µA at 25.5 V Internal Per wire 216.5 ±5.6 Ω 130 ±3 Ω — resistance Difference ± Ω — — 60 m — (between wires) Max. ±30 ppm/°C 311 Ω (311 Ω + 36 Ω)Io + 0.9 V 139 Ω ϫ Io + 0.9 V Internal voltage drop — — 7.34 V at 23.6 mA 9.09 V at 23.6 mA 4.16 V at 23.6 mA 6.72 V at 21.6 mA 8.40 V at 21.6 mA Maximum impressed voltage 9V 6.5 V 31.0 V 26.6 V Rated current of internal fuse 50 mA 100 mA 50 mA 50 mA Working temperature range -10° to 50°C Storage temperature range -40° to 90°C Humidity range 5 to 95% RH (no condensation) Installation location Nonhazardous area (indoors) Grounding Grounding resistance of 10Ω or less (equivalent to Japanese Industrial Standard Class A) Material Polycarbonate Housing Color Light green Weight 160 g T03.EPS All Rights Reserved. Copyright © 2001, Yokogawa Electric Corporation GS 01B04S10-01E Apr. 01, 2002-00 <<Contents>> <<Index>> 3 Item BARD-820 BARD-830 Type Isolated barrier Isolated barrier Use 4 to 20 mA DC signal from transmitter with 4 to 20 mA DC signal to control element communication functions Intrinsic safety class Protection Concepts [Ex ia] IIC [Ex ia] IIC and certificate number and Apparatus Group (Certified by TIIS, No. C15059) (Certified by TIIS, No. C15060) Signal range 4 to 20 mA DC 4 to 20 mA DC Nonhazardous Overrange signal 0 to 24 mA DC 0 to 22 mA DC Load resistance 0 to 1 kΩ — Signal range 4 to 20 mA DC 4 to 20 mA DC Overrange 0 to 24 mA DC 0 to 22 mA DC Intrinsic safe signal 0 to 750 Ω (at 0 to 20 mA DC) Load resistance — 0 to 700 Ω (at 0 to 21.6 mA DC) Output signal ripples ±50 µA rms Output resistance — 6 MΩ or larger Input/output accuracy (at 23°C) 0.0625% of span (±10 µA) Effect of temperature variations 25 ppm/°C (±0.4 µA/°C) Response 10 µs (10 to 90%) 100 µs (10 to 90%) Max. 16.4 V DC at 20 mA Power supply voltage Min. 16.1 V DC at 24 mA Input voltage drop — 2 V or less at 20 mA Applicable communication type Yo kogawa BRAIN communication — Output breakage detection — Provided Working power supply voltage 20 to 35 V DC 94 mA at 20 V DC 67 mA at 20 V DC Maximum power consumption (at 20 mA DC 78 mA at 24 V DC 57 mA at 24 V DC output, 250 Ω load) 56 mA at 35 V DC 46 mA at 35 V DC Input-to-output 1,500 V AC for 1 minute 1,500 V AC for 1 minute Withstanding Input-to-power supply 1,500 V AC for 1 minute 40 V DC for 1 minute voltage Output-to-power supply 40 V DC for 1 minute 1,500 V AC for 1 minute Uo 25.2 V DC 25.2 V DC Io 93 mA 93 mA Intrinsic safety Po 0.58 W 0.58 W ratings Co 0.107 µF 0.107 µF Lo 4.2 mH 4.2 mH Um 250 V AC/DC 250 V AC/DC Working temperature range -10° to 50°C Storage temperature range -40° to 90°C Humidity range 5 to 95% RH (no condensation) Panel mounting (with the accompanying bracket), Mounting 35-mm DIN standard rail (DIN EN 50 022)-mounting, or dedicated DIN-equivalent power rail-mounting Connections M4 screw terminals (detachable terminal block) Applicable wires: AWG14 (2.5 mm2) Housing Material Polycarbonate Color Light green Weight 150 g T04.EPS All Rights Reserved. Copyright © 2001, Yokogawa Electric Corporation GS 01B04S10-01E Apr. 01, 2002-00 <<Contents>> <<Index>> 4 ■ EXAMPLES OF ALLOWABLE INTRINSICALLY SAFE CIRCUIT WIRING LENGTH The table on the right shows examples of the allowable BARD Model Combined IS Device Wiring Length wiring length when combining these safety barriers with a BARD-600 Model TC/ᮀ 2 km or less*1 Yokogawa’s IS field device. Ensure that the wiring length Model TD/ᮀ 800 m or less*1 meets the criterion and the wiring resistance does not BARD-700 Model RB/ᮀ 450 m or less*1 exceed the allowable external wiring resistance for the CVV (control PVC- receiver instrument connected. The table simply shows insulated PVC-sheathed 1 values that meet these two criteria. For the wiring cable): 400 m or less* resistance with which the combined devices can actually BARD-800 EJ Series transmitter CEV (control work, refer to the documentation of the model used. polyethylene-insulated PVC-sheathed cable): 800 m or less*1 CVV: 480 m or less*1 BARD-820 EJA Series transmitter CEV: 960 m or less*1 CVV: 340 m or less*1 BARD-830 PK200 CEV: 680 m or less*1 *1: The certified protection concepts and apparatus group require that a different temperature sensor, if combined, meets the following criteria: L: 20 µH or less; C: 2 nF or less.
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