Fault Codes; Self-Supervision Output (Irf); Serial Communication - ABB REM 543 Technical Reference Manual

ABB Network Partner
4.1.9.1.
4.1.9.2.
4.1.10.
Page 40
REM 543 Protection,
Monitoring and Control

Fault codes

When an internal fault is detected in a REM 543 machine terminal, the fault code is
recorded and can be read from the main menu Relay Status/General/IRF code. The IRF
code shows the first internal fault detected by the self-supervision system. This fault
code should be recorded and stated when overhaul is ordered.

Self-supervision output (IRF)

The self-supervision signalling output operates on the closed circuit principle. Under
normal conditions the contact gap 3-5 is closed. Should the auxiliary power supply fail
or an internal fault be detected, the contact gap 4-5 closes.
Normal condition
IRF
Fig. 4.1.9.2.-1. Self-supervision output (IRF)

Serial communication

The machine terminal has two serial communication ports, one on the front panel and
the other on the rear panel.
The standard ABB opto-connection (RS-232 connection) on the front panel is to be used
for the connection of a PC for configuring the machine terminal. The front interface
uses the SPA bus protocol.
The 9-pole RS-485 connection on the rear panel connects the machine terminal to the
distribution automation system via the SPA bus or the LON bus. The fibre-optic inter-
face module type RER 103 is used to connect the machine terminal to the fibre-optic
communication bus. The module RER 103 supports both SPA bus and LON bus com-
munication.
Technical Reference Manual
X4.1
3
4
IRF
5
Part 1, General
X4.1
Fault condition
3
4
5
IRFoutput