Analog Input Configuration - ABB RELION REX640 Technical Manual

Section 9
Control functions
9.7.4
1430

Analog input configuration

ASNSCSYN has two analog group inputs which must be properly configured.
Table 1367: 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 1368: Special conditions
Condition
U3P1 and U3P2 connected to real measurements
Dissimilar VT connection settings for UTVTR on
the Bus A and Bus B sides
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.
Description
Three-phase voltages (Bus B side)
Three-phase voltages (Bus A side)
Description
When one voltage channel from the Bus B side is
connected to channel 1 of U3P1 and one voltage
channel from the Bus A side is connected to
channel 1 of U3P2, the function can only work if
UTVTR's VT connection settings on the Bus A and
Bus B sides are similar.
The function can work if one voltage channel from
the Bus B side is connected to channel 1 of U3P1
and three voltage channels from the Bus A side
are connected to U3P2.
The function can work if one voltage channel from
the Bus B side is connected to channel 1 of U3P1
and two voltage channels along with the residual
voltage from the Bus A side are connected to
U3P2.
The function can work if three voltage channels
from the Bus B side are connected to U3P1 and
one voltage channel from the Bus A side is
connected to channel 1 of U3P2.
The function can work if two voltage channels
along with the residual voltage from the Bus B side
are connected to U3P1 and one voltage channel
from the Bus A side is connected to channel 1 of
U3P2.
The function requires that all three voltage
channels or two voltage channels along with the
residual voltage are connected to either U3P1 or
U3P2.
1MRS759142 C
REX640
Technical Manual