Introduction - Belden HIRSCHMANN OZD Modbus Plus G12 Manuel

1 Introduction

1 Introduction
The Fiber-Optic Repeater OZD Modbus Plus G12 ... is
designed for use in optical Modbus Plus field bus net-
works.
It permits conversions of electrical Modbus Plus inter -
faces into optical Modbus Plus interfaces and vice versa.
The repeaters can be integrated into existing electrical
Modbus Plus field bus networks. OZD Modbus Plus
G12 ... repeaters can also be used to configure a com -
plete optical Modbus Plus field bus network with line
or ring topology.
The mechanical structure comprises a compact, rigid
metal housing which can either be mounted on a DIN
rail or on any flat base.
No adjustment is necessary during start-up.
Ports
The repeater has three mutually independent channels
(ports), each of which in turn consists of a transmitter
and a receiver.
Port 1 is a 9-pin Sub-D connector (female). Ports 2 and 3
are optical BFOC/2.5 (ST
Port 2
Optical,
BFOC/2.5
socket
Fig. 1: Fiber-Optic Repeater OZD Modbus Plus G12 ... . The illustration shows the position of the individual ports, the terminal block,
the LED indicators, and the grounding screw.
Version 04 07/2014
®
) sockets.
5-pole
terminal block
for operating
voltage supply
and signaling
contact
Port 3
Optical,
BFOC/2.5
socket
Power supply
The operating voltage is +24 VDC to +48 VDC.
A redundant power supply from two separate sources is
provided to increase operational reliability. The two ope-
rating voltages can be supplied to two different terminals
of the 5-pole terminal block.
Both connections are decoupled via diodes in order to
prevent feedback or destruction resulting from polarity
reversal.
There is no load distribution between the sources. With
redundant supply, only the power supply unit with the
higher output voltage provides the bus adapter with
power.
Signaling contact
Various repeater malfunctions can be indicated via a
signaling contact (relay with floating contacts).
The connections of the signaling contact also terminate
at the 5-pole terminal block.
LEDs
Four two-color LEDs indicate the current operating
status and any malfunctions.
i OZD
Modbus Plus
System
LED
Port 1
Port 2 indicators
Port 3
Port 1
Electrical,
Port 1
Sub-D
connector
Grounding
screw
31