IEC00000551-TIFF V1 EN
Figure 397:
Tripping part of the WEI logic, simplified diagram
13.3.3
Function block
ANSI06000287-2-en.vsd
ZCRWPSCH (85)
V3P*
BLOCK
IFWD
IREV
WEIBLK1
WEIBLK2
LOVBZ
CBOPEN
CRL
IRVL
TRWEI
TRWEI_A
TRWEI_B
TRWEI_C
ECHO
ANSI06000287 V2 EN
Figure 398:
ZCRWPSCH (85) function block
13.3.4
Input and output signals
Table 428:
ZCRWPSCH (85) Input signals
Name
Type
Default
Description
V3P
GROUP
SIGNAL
-
Group signal for voltage input
BLOCK
BOOLEAN
0
Block of function
IFWD
BOOLEAN
0
A signal that indicates a forward fault has been
detected and will block tripping if there was a pre-
existing reverse fault condition (IREV)
Table continues on next page
Section 13
1MRK505222-UUS C
Scheme communication
806
Technical reference manual
Summary of Contents for Relion 670 series
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