Analog Channel Configuration - ABB RELION REX640 Technical Manual

1MRS759142 C
5.2.4
5.2.5
REX640
Technical Manual
The function contains a blocking functionality which can be used to block the function
outputs.

Analog channel configuration

CCBRBRF has two analog group inputs which must be properly configured.
Table 1007: Analog inputs
Input
1)
I3P
1)
IRES
1) Can be connected to GRPOFF if
set to "Current check"
See the preprocessing function blocks in this document for the
possible signal sources. The GRPOFF signal is available in the
function block called Protection.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings. For
troubleshooting, check the contents of this chapter and also the preprocessing blocks
in this document. The configuration can be written to the protection relay once the
mismatch is corrected.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "on" and "off".
The operation of CCBRBRF can be described using a module diagram. All the
modules in the diagram are explained in the next sections. Also further information on
the retrip and backup trip logics is given in sub-module diagrams.
Protection related functions
Description
Three-phase currents
Necessary when
"Breaker status"
Residual current (measured or calculated)
Necessary when
"Breaker status"
CB failure mode is set to "Breaker status" and CB fail retrip mode is not
Section 5
CB failure mode is set other than
CB failure mode is set other than
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