Soft ground connector pinouts
SEMOD158670-45 v1
A second 2-pole screw connector is used for the connection of IO-ground. It can be
used in two combinations like:
• Unconnected: No ground of the IO-part · .
• Soft grounded: The IO is connected to the GND with an RC net parallel with a
MOV
22.2.11.3 Technical data
SEMOD158678-1 v1
SEMOD158710-2 v2
Table 641: Galvanic RS485 communication module
Quantity Range or value
Communication speed 2400–19200 bauds
External connectors RS-485 6-pole connector
Soft ground 2-pole connector
22.2.12 Line data communication module (LDCM)
IP15588-1 v1
22.2.12.1 Introduction
SEMOD55651-1 v1
M16028-3 v4
The Line data communication module (LDCM) is used for communication (binary
signal transfer) between IEDs situated at distances <80 km away, or from an IED to
optical-to-electrical converter with G.703 interface located at distances <3 km
away. The IEEE/ANSI standard format is used.
LDCM has one optical port with ST or FC/PC connectors.
Line data communication module LDCM
M16075-3 v5
Each module has one optical port, one for each remote end to which the IED
communicates.
Alternative modules for 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.
22.2.12.2 Design
SEMOD55466-4 v3
LDCM is a PCMIP type II single width format module. LDCM can be mounted on
the:
Section 22 1MRK 505 394-UEN A
IED hardware
842 Line differential protection RED650 2.2 IEC
Technical manual
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