ABB Relion 670 series, Technical Reference Manual, Page: 1123 / 1232

19.2.14 Serial and LON communication module (SLM)
19.2.14.1 Introduction
The serial and LON communication module (SLM) is used for SPA, IEC 60870-5-103,
DNP3 and LON communication. The module has two optical communication ports for
plastic/plastic, plastic/glass or glass/glass. One port is used for serial communication
(SPA, IEC 60870-5-103 and DNP3 port or dedicated IEC 60870-5-103 port depending
on ordered SLM module) and one port is dedicated for LON communication.
19.2.14.2 Design
The SLM is a PMC card and it is factory mounted as a mezzanine card on the NUM
module. Three variants of the SLM is available with different combinations of optical
fiber connectors, see figure
530 . The plastic fiber connectors are of snap-in type and
the glass fiber connectors are of ST type.
IEC05000760 V1 EN
Figure 530: The SLM variants, component side view
A Snap in connector for plastic fiber
B ST connector for glass fiber
1 LON port
2 SPA/IEC 60870-5-103/DNP3 port or dedicated IEC 60870-5-103 port depending on
ordered SLM module
1MRK505222-UUS C
Section 19
IED hardware
1117
Technical reference manual