Technical Data - ABB REG670 Technical Manual

Section 21
IED hardware
21.2.14.4
21.2.15
21.2.15.1
21.2.15.2
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Technical data

Table 922: OEM - Optical ethernet module
Quantity
Number of channels
Standard
Type of fiber
Wave length
Optical connector
Communication speed
Line data communication module (LDCM)
Introduction
The line data communication module (LDCM) is used for communication between
the IEDs situated at distances <110 km or from the IED to optical to electrical
converter with G.703 interface located on a distances <3 km away. The LDCM
module sends and rereceives data, to and from another LDCM module. The IEEE/
ANSI standard format is used.
The line data communication module is used for binary signal transfer. The module
has one optical port with ST connectors see figure 540.
Line data communication module LDCM
Each module has one optical port, one for each remote end to which the IED
communicates.
Alternative cards for Long range (1550 nm single mode), Medium range (1310 nm
single mode) and Short range (850 nm multi mode) are available.
Class 1 laser product. Take adequate measures to protect the eyes.
Never look into the laser beam.
Design
The LDCM is a PCMIP type II single width format module. The LDCM can be
mounted on:
• the ADM
• the NUM
Rated value
1 or 2
IEEE 802.3u 100BASE-FX
62.5/125 mm multimode fibre
1300 nm
Type ST
Fast Ethernet 100 Mbit/s
1MRK502052-UEN B
Technical manual