Stahl - Catalog - STAHL - #279

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3/2 3 Automation 17.04.2008 Fibre Optics Fieldbus Isolating Repeater for Installation in Zone 1 Type 9186/12 Selection Table Version Network structure Installation in Order number Fibre Optics Fieldbus Isolating Repeater Type 9186/12 Ring, point-to-point redundant, line Zone 1 9186/12-11-11 Technical Data Installation in Zone 1 Certificates BVS 06 ATEX E 145 X Explosion protection E II 2G (1) GD Ex e mb ib [ia, op is] IIC T4 Safety data (CENELEC) Fibre optic interface conform to Ex op is acc. to EN 60079-28 max. radiated power Po ( 15 mW Max. voltage Uo ± 3.7 V Max. current Io 148 mA Max. power Po 137 mW For connection RS 485 IS Max. connectable voltage Ui ± 4.2 V Internal capacitance Ci and inductance Li negligible Ex i fault monitoring contact Max. connectable voltage Ui 24 V Max. connectable current Ii 600 mA Internal capacitance Ci and inductance Li negligible Further information and combinations of values, see certification Power supply Nominal voltage UN 24 V DC Voltage range 18 V ... 31.2 V Residual ripple < 3.6 Vss Nominal current (at UN) 67 mA Power consumption ( 2 W Indication green LED "PWR" Polarity reversal protection yes Galvanic transmission Test voltage under regulations EN 50020 between RS 485 and power supply – – Ex i RS485 to power supply 1.5 kV Error-contact to power supply 1.5 kV PA to power supply 1.5 kV Ex i RS 485 to error-contact 500 V Ex i RS 485 to PA 500 V Error contact to PA 500 V Optical interface Protocols protocol transparent to RS-485 interface Network topologies ring structure, Line structure, point-to-point connection Redundancy automatic switchover triggered by line fault Connection ST®, BFOC/2.5 socket Wave length 850 nm Transmission line length ( 2000 m Recommended fibre optic cables G 50 / 125 G 62.5 / 125 Integrated diagnostic function with alarming and automatic switch-over to the protection path, improves the availablity