Non-Volatile Memory; Self-Supervision - ABB REM 610 Technical Reference Manual

1MRS755537
5.1.1.10.
5.1.1.11.
Motor Protection Relay
Technical Reference Manual - ANSI Version

Non-volatile memory

The relay can be configured to store various data in a non-volatile memory, which
retains its data also in case of loss of auxiliary voltage (provided that the battery has
been inserted and is charged). Operation target messages and LEDs, the number of
motor start ups, disturbance recorder data, event codes and recorded data can all be
configured to be stored in the non-volatile memory whereas setting values are
always stored in the EEPROM. The EEPROM does not require battery backup.

Self-supervision

The self-supervision system of the relay manages run-time fault situations and
informs the user about an existing fault. There are two types of fault targets: internal
relay fault (IRF) targets and warnings.
When the self-supervision system detects a permanent internal relay fault, which
prevents relay operation, the green target LED (ready) will flash. At the same time,
the IRF contact (also referred to as the IRF relay), which is normally picked up,
drops off and a fault code appears on the LCD. The fault code is numerical and
identifies the fault type.
INTERNAL FAULT
FAULT CODE :30
Fig. 5.1.1.11.-1 Permanent IRF
IRF codes can indicate:
No response on the output contact test
*
Faulty program, work or parameter memory
*
Internal reference voltage error
*
In case of a warning, the relay continues to operate with full or reduced functionality
and the green target LED (ready) remains lit as during normal operation. A fault
target message (see Fig. 5.1.1.11.-2), with a possible fault code (see Fig. 5.1.1.11.-
3), appears on the LCD indicating the type of fault.
REM 610 REM 610
A040278
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