Communication Ports; Design - ABB Relion 670 Series Communication Protocol Manual

Section 3
SPA operation principle
3.1.3

Communication ports

The serial communication module (SLM) is a mezzanine module placed on the first analog
digital conversion module (ADM). It is used for LON, SPA, IEC 60870-5-103 and DNP
communication.
In the following figure, X311 ports A/B are for SPA, IEC103 or DNP3 and X311 ports C/D are for
LON protocol.
IEC16000079 V1 EN-US
Figure 5:
There are two types of IO connectors: snap-in connector for plastic fiber cables and ST/
bayonet connector for glass fiber cables. The SLM can be equipped with either type or
connector or with a combination of both types of connectors. This is identified with a tag.
Connect the incoming optical fiber to the RX receiver input, and the outgoing optical fiber to
the TX transmitter output. Pay special attention to the instructions concerning handling and
connection of fiber cables.
For setting the transfer rate (baud rate) and slave number, please refer to the Application
manual and Commissioning manual respectively.
3.2

Design

Using the rear SPA port for either local or remote communication with a PC requires the
following equipment:
• Optical fibers
• Opto/electrical converter for the PC
• PC
16
IEC16000079-1-en.vsd
Rear view of 1/2 x 19" casing with 1 TRM slot
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SPA, 670 series
Communication protocol manual