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