Self-Supervision (Irf) System - ABB REU 610 Technical Reference Manual

REU 610
5.1.18.
108
Voltage Relay
Technical Reference Manual - ANSI Version
Table 5.1.17.1.-9 Event codes E17...E26
Channel Event Description
2 E17 DI1 activated
2 E18 DI1 deactivated
2 E19 DI2 activated
2 E20 DI2 deactivated
2 E21 DI3 activated
2 E22 DI3 deactivated
2 E23 DI4 activated
2 E24 DI4 deactivated
2 E25 DI5 activated
2 E26 DI5 deactivated
Default value of event mask 2V156

Self-supervision (IRF) system

The relay is provided with an extensive self-supervision system which
continuously supervises the software and the electronics of the relay. It
handles run-time fault situations and informs the user about an existing fault
via a LED on the HMI and a text message on the LCD. The fault codes can
also be read via serial communication. There are two types of fault targets:
IRF targets and warnings.
Internal relay fault
When an internal relay fault preventing relay operation is detected, the relay
first tries to eliminate the fault by restarting. Only after the fault is found to be
permanent, the green target LED (ready) begins to blink and the self-
supervision output contact is activated. All other output contacts are returned
to the initial state and locked for the internal relay fault. Further, a fault target
message appears on the LCD, including a fault code.
IRF targets have the highest priority on the HMI. None of the other HMI
targets can override the IRF target. As long as the green target LED (ready) is
blinking, the fault target cannot be cleared. In case an internal fault
disappears, the green target LED (ready) stops blinking and the relay is
returned to the normal service state, but the fault target message remains on
the LCD until manually cleared.
The IRF code indicates the type of internal relay fault. When a fault appears,
the code is to be recorded and stated when ordering service. The fault codes
are listed in the following table:
1MRS755972
Weight- Default
ing value
factor
1 0
2 0
4 0
8 0
16 0
32 0
64 0
128 0
256 0
512 0
0