6890427 TURCK | Alldatasheet
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Edition • 2023-07-21T16:22:03+02:00 excom I/O System PROFIBUS-DP fiber-optic coupler for zone 1 OC11EX/2G.2 The optocoupler OC11Ex/2G.2 converts the PROFIBUS-DP signals on copper cables in- to optical signals. The bus signals can there- fore be transmitted from the safe area to the Ex area over long distances without potential or interference. When using fiber-optic cables, the maximum baud range is 2500 m for OM1 (62.5/125-µm) cables and 1500 m for OM2 (50/125-µm) cables. The OC11Ex/3G.2 in zone 2 transmits the signals via the optical interface to the OC11Ex/2G.2 in zone 1 which converts them. The signals are then output intrinsically safe at the RS485-IS interface. The RS485-IS interface is entirely realized ac- cording to the PNO PROFIBUS guideline. The optocoupler OC11Ex/2G.2 is equipped with ■ intrinsically safe RS485-IS PROFIBUS in- terface (acc. to the RS485-IS draft worked out by the PNO work group) ■ intrinsically safe optical interface with ST connectors for emitter and receiver Up to 31 bus nodes can be connected to the fiber-optic coupler. Baud rates of 9.6 kbps up to 1.5 Mbps are possible, or will be automati- cally detected. For diagnostic purposes there are four status LEDs that indicate power ON, fiber-optic seg- ment, RS485 interface and baud rate. The de- vice features an M8 communication interface. Two OC11Ex devices can be coupled togeth- er via the M8 interface. Wire-break and short- circuit are not transmitted from one segment to the next one. All segments can thus be op- erated trouble-free and independently of one another. In order not to limit the number of nodes and cable length of a PROFIBUS-DP segment, amplitude and phase are reproduced in the coupler. The OC11Ex/2G.2 shield is always capacitively coupled to the equipotential bond- ing. ■ Device for data transmission between elec- trical and optical fieldbus circuits ■ Power supply of max. 31 nodes ■ OM1 (62.5/125) for transmitting data over distances up to 2500 m ■ OM2 (50/125) for transmitting data over distances up to 1500 m ■ Mounting in zone 1 possible ■ Note: Idle level corresponds to active light!
Edition • 2023-07-21T16:22:03+02:00 Type OC11EX/2G.2 ID 6890427 Nominal voltage 24 VDC Operating voltage 18…32 VDC Current consumption 100 mA Galvanic isolation Complete galvanic isolation acc. to EN 60079-11 Number of channels 1 Transmission rate 9.6 kbps up to 1.5 Mbps Type of optical fiber Multimode fiber 62.5/125 µm Ex approval acc. to conformity certificate IECEx PTB 15.0042X Ex approval acc. to conformity certificate PTB 05 ATEX 2051 X Device designation É II 2 G Ex eb mb [ib op is Gb] IIC T4 Displays/Operating elements Operational readiness 1 × green State/ Fault 2 × yellow/red Baud rate detection 1 × yellow Housing material Anodized aluminium Front plate FR4, gray Connection mode snap-fit on DIN rail (DIN 60715) or wall mounting Protection class IP20 Ambient temperature -20…+70 °C Relative humidity ð 93 % at 40 °C acc. to IEC 60068-2-78 Vibration test Acc. to IEC 60068-2-6 Shock test Acc. to IEC 60068-2-27 EMC Acc. to EN 61326-1 Acc. to Namur NE21 MTTF 234 years acc. to SN 29500 (Ed. 99) 40 °C Dimensions 72 x 105.5 x 31 mm Approvals ATEX cFMus cFM IECEx CCC INMETRO KOSHA EAC Ex DNV GL BV LR KR KCC CE Dimensions