15
2 Introduction
OZD Profi G12D... ATEX 1 V. 03 07/2014
A RS 485 bus segment as per PROFIBUS standard EN
50170 can be connected to the electrical channel.
The optical channels (CH2 and 3) are designed as optical
BFOC/2.5 (ST
®
) sockets.
For types OZD Profi … DK … and OZD Profi … DE …the
fibre optics are led outwards via the PG cable glands.
A slotted seal enables the installation of fibre optic
cables with an add-on connector.
Voltage supply
Operating voltage supply is through the 24 V d.c. volt-
age. A redundant power feed is available for increasing
the operational safety.
The operating voltage supply is placed on 3 terminals of
the terminal block. For types OZD Profi … DK … and
OZD Profi … DE … with connection cables, these are led
outwards via PG cable glands.
The operating voltage connections are below eachother
and are galvanically separated from the remaining
electrical connections.
Signalling contact
Various interferences of the repeater can be signaled
through a signalling contact (relays with potential-free
contacts) .
The signalling contact is placed on 3 terminals of the ter-
minal block. For types OZD Profi … DK … and OZD Profi
… DE … with connection cables are led outwards via PG
cable glands.
The signalling contact connections are below each other
and galvanically separated from the remaining electrical
connections.
LEDs
Four multi-coloured LEDs signalise the current operating
status and possible malfunctions.
Configuration
The device is configured with eight easily accessible
switches.
Fibre optics
Use of fibre optics allows very large ranges and ensure
optimum protection from EMC influences not only on the
transmission paths but also due to electrical isolation on
the repeater itself.
Transmission speed
The PROFIBUS Fiberoptic Repeater
OZD Profi G12D… ATEX 1 supports data rates of
9.6 kbit/s to 12 MBit/s NRZ.
Network extension
Permissible network extension for the line, ring or star
topology is up to 3 000 m.
Redundance
Very high transmission security is ensured by the redun-
dant ring.
Operational safety can be further increased by redundant
operating voltage supply.
Measurement output
A measurement output, on which the optical input power
can be determined with a standard voltmeter, is available
for every optical channel. For this, a hot work permit is
required in the ex-area.
Standards / Directives
OZD Profi G12D… ATEX 1 comply with the standard EN
50170 as well as the technical guideline “optical trans-
mission technology for PROFIBUS” issued by the
PROFIBUS user organisation PNO .
