Turck OC11EX/2G.2 Datasheet

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 in­to optical signals. The bus signals can there­fore 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 ac­cording 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 automati­cally detected.

For diagnostic purposes there are four status
LEDs that indicate power ON, fiber-optic seg­ment, RS485 interface and baud rate. The de­vice features an M8 communication interface.
Two OC11Ex devices can be coupled togeth­er via the M8 interface. Wire-break and short­circuit are not transmitted from one segment
to the next one. All segments can thus be op­erated 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 bond­ing.

■ Device for data transmission between

electrical 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 • 2021-04-09T10:21:01+02:00

1 / 2 Hans Turck GmbH & Co.KG ñ D-45472 Mülheim an der Ruhr ñ Witzlebenstraße 7 ñ Tel. [phone] ñ Fax [phone] ñ [e-mail] ñ www.turck.com

excom I/O System
PROFIBUS-DP fiber-optic coupler for zone 1
OC11EX/2G.2

Type designation OC11EX/2G.2

Ident no. 6890427

Nominal voltage 24 VDC
Operating voltage range 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 Multi-mode 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

Indication

Operational readiness 1 x green
State/ Fault 2 x yellow / red
Baud rate detection 1 x 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
Vibration test acc. to IEC 60068-2-6
Shock test acc. to IEC 60068-2-27
EMC acc. EN 61326-1 (2013)

MTTF 234 years acc. to SN 29500 (Ed. 99) 40 °C
Dimensions 72 x 105.5 x 31 mm

É II 2 G Ex eb mb [ib op is Gb] IIC T4

ð 93 % at 40 °C acc. to IEC 60068-2-78

acc. to Namur NE21 (2012)

Dimensions

Approvals ATEX

TR CU
KOSHA
INMETRO
DNV GL
BV
LR

Edition • 2021-04-09T10:21:01+02:00

2 / 2 Hans Turck GmbH & Co.KG ñ D-45472 Mülheim an der Ruhr ñ Witzlebenstraße 7 ñ Tel. [phone] ñ Fax [phone] ñ [e-mail] ñ www.turck.com