Exclusion Mode - ABB RELION REX640 Technical Manual

Section 8
Measurement functions
8.2.3.10
8.2.4
1338
The overwrite mode is recommended if it is important to have the latest recordings in
the memory. The saturation mode is preferred when the oldest recordings are more
important.
New triggerings are blocked in both modes until the previous recording is completed,
but a new triggering can be accepted before all pre-trigger samples are collected for
the new recording. In such a case, the recording is as much shorter as there are pre-
trigger samples lacking.

Exclusion mode

Exclusion mode is on when the value of the Exclusion time parameter is higher than
zero. During the exclusion mode, new triggerings are ignored if the triggering reason
is the same as in the previous recording. The Exclusion time parameter controls how
long the exclusion of triggerings of same type is active after a triggering. The
exclusion mode applies only to the analog and binary channel triggerings, not to
periodic and manual triggerings.
When the value set with the Exclusion time parameter is zero, the exclusion mode is
disabled and there are no restrictions on the triggering types of the successive
recordings.
The exclusion time setting is global for all inputs, but there is an individual counter for
each analog and binary channel of the disturbance recorder, counting the remaining
exclusion time. The remaining exclusion time can be monitored with the Exclusion
time rem parameter (only visible via communication, IEC 61850 data ExclTmRmn)
of the corresponding analog or binary channel. The Exclusion time rem parameter
counts downwards.
Configuration
The disturbance recorder can be configured with PCM600 or any tool supporting the
IEC 61850 standard.
RDRE1 should always be included in Application Configuration
when the disturbance recorder is used.
The disturbance recorder can be enabled or disabled with the Operation parameter
under Configuration/Disturbance recorder/General.
One analog signal type of the protection relay can be mapped to each of the analog
channels of the disturbance recorder. The mapping is done in Application
Configuration in PCM600. The name of the analog channel is user-configurable. It
can be modified by writing the new name to the Channel id text parameter of the
corresponding analog channel.
Any external or internal digital signal of the protection relay which can be
dynamically mapped can be connected to the binary channels of the disturbance
1MRS759142 C
REX640
Technical Manual