ABB RELION 670 Series Technical Manual page 1330

Section 22
IED hardware
IEC05000472 V3 EN-US
Figure 662: OEM layout, standard PMC format 2 channels
• 1: Transmitter
• 2: Receiver
22.2.14.4 Technical data
Table 1039:OEM - Optical ethernet module
Quantity
Number of channels
Standard
Type of fiber
Wave length
Optical connector
Communication speed
22.2.15 Line data communication module (LDCM)
22.2.15.1 Introduction
The line data communication module (LDCM) is used for communication between the IEDs
situated at distances <68 miles or from the IED to optical to electrical converter with G.703
interface located on a distances <1.9 miles 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 663.
1324
1
2
1
2
Rated value
1 or 2 (port A, B for IEC 61850-8-1 / IEEE C37.118 and port C, D for
IEC 61850-9-2LE / IEEE C37.118)
IEEE 802.3u 100BASE-FX
62.5/125 mm multimode fiber
1300 nm
Type ST
Fast Ethernet 100 Mbit/s
1MRK 502 066-UUS B
IEC05000472=1=en=Original.vsd
Technical manual
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