Westermo ODW-610-F2 - Manual (Page 10)

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Optical fibre link functionality and status indication
At power on, all LED's will be active during an initiation sequence followed by an auto-
matic initiation of the optical fibre links. The alarm will be set until the fibre optical links
are in operation and ready to transfer PROFIBUS DP data.
Data frames are transferred over the fibre optic links as long as the links are in operation
and the data rate has been detected.
When any of the fibre optic links is out of operation, this will be indicated by a
local alarm, and this will set the alarm output. It will also send a remote alarm via the
other link, if possible. When the link returns to operations mode, the alarm will reset
automatically.
The Bus active (BA) LED is set if data frames are received on the electrical
PROFIBUS DP or fibre optical port and the data rate is detected, independently
of the status on fibre optical link.
Redundant power supply, galvanic isolated (2 kVAC) to other ports
ODW-610-F2 should be supplied with safety extra low voltage (SELV). It is designed to
operate permanently over a wide input range and provided with two independent inputs,
allowing redundancy should either supply fail.
9-position D-sub PROFIBUS DP connector
The pin assignment for the connector is in compliance with PROFIBUS standard
EN 50 170
Single or multimode LC fibre connectors
ODW-610-F2 use Small Form Factor Pluggable (SFP) transceivers that are in compliance
with the Multi-Sourcing Agreement (MSA). This means that a wide range of different
fibre transceivers and connectors can be used.
Status interface
This interface enables supervision of fibre optic link state by means of a relay with both
normally open and closed contacts.
The fault state will be set if:
… Local or remote fibre link errors exist.
… The unit is out of service, e.g. no power supply.
Designed for hash environments, such as industrial, road
and railway applications
ODW-610-F2 complies with standards for industrial environments and railway
signalling and telecommunications apparatus. Additionally, the wide climatic range
of the ODW-610-F2 allows it to be installed in out-door cabinets without any
additional measures, such as heating, etc.