Analog Channel Configuration - ABB RELION REX640 Technical Manual

Section 9
Control functions
9.5.4
9.5.5
1386
The function contains a blocking functionality. It is possible to block function outputs
and timers.

Analog channel configuration

SECRSYN has two analog group inputs which must be properly configured.
Table 1342: Analog inputs
Input
U3P1
U3P2
See the preprocessing function blocks in this document for the
possible signal sources.
There are a few special conditions which must be noted with the configuration.
Table 1343: Special conditions
Condition
U3P1 connected to real measurements
U3P2 connected to real measurements
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".
SECRSYN has two parallel functionalities, the synchro check and energizing check
functionality. The operation of SECRSYN can be described using a module diagram.
All the modules in the diagram are explained in the next sections.
Description
Three-phase voltages (bus side)
Three-phase voltages (line side)
Description
The function requires that any two voltage
channels from the bus side are connected.
The function requires that one voltage channel
from the line side is connected to channel 1 or any
two voltage channels from the line side.
1MRS759142 C
REX640
Technical Manual