Connection Of Optical Bus Lines; Mounting Repeaters - Belden HIRSCHMANN OZD Modbus Plus G12 Manuel

3 Start-Up

3.2 Connection of optical bus lines

Use a duplex fiber-optic cable with BFOC/2.5 (ST
connectors to connect the individual repeaters.
Pay attention to the maximum cable length of the
fiber-optic cable as well as the possible types of
fibers specified in the Technical Data.
Make sure that each optical input a is connected to
an optical output J at the opposite end ("cross-over
link").
The corresponding BFOC sockets of the two ports are
marked on the lower front panel.
Ensure sufficient strain relief for the fiber-optic cables
and pay attention to their minimum bending radii.
Unused BFOC sockets are to be covered with the
protective caps supplied. Incident ambient light and,
in particular, great ambient brightness, can affect the
network.
The penetration of dust may impair operation of the
optical components

3.3 Mounting repeaters

The repeater OZD Modbus Plus G12 ... can either be
mounted on a 35 mm DIN rail as per IEC 60715: 1981 +
A1: 1995 or directly on a flat surface.
The installation location is to be selected so as to
ensure compliance with the climatic limit values given
in the Technical Data.
Make sure there is sufficient space for connection of
the bus and power supply lines.
To facilitate installation of the fiber-optic cables,
they are to be connected before the repeaters are
mounted.
If possible, the repeaters should only be installed on a
mounting plate or DIN rail with low-impedance and
Version 04 07/2014
®
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Port 2
Port 3
Fig. 7: View of underside of repeater with optical ports 2 and 3
low-inductance grounding. If the mounted DIN rail
and mounting plate are insulated, the repeater must
be provided with a low-impedance and low-inductan-
ce ground connection directly via the grounding
screw.
Grounding
screw
Fig. 8: Position of grounding screw
3.2 Connection of optical bus lines
J
J
Port 1
39