13.6.3
Function block
ANSI06000289-1-en.vsd
ECRWPSCH (85)
V3P*
BLOCK
IFWD
IREV
WEIBLK1
WEIBLK2
LOVBZ
CBOPEN
CRL
IRVL
TRWEI
ECHO
CR
ANSI06000289 V1 EN
Figure 408:
ECRWPSCH (85) function block
13.6.4
Input and output signals
Table 440:
ECRWPSCH (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)
IREV
BOOLEAN
0
A signal that indicates a reverse fault has been
detected and activates current reverasl logic
WEIBLK1
BOOLEAN
0
Block of WEI Logic
WEIBLK2
BOOLEAN
0
Block of WEI logic due to operation of other
protections that would effect a pilot trip or the detection
of reverse faults that will be tripped by an external device
LOVBZ
BOOLEAN
0
Block of trip from WEI logic through the loss of voltage
(fuse-failure) function
CBOPEN
BOOLEAN
0
Block of trip from WEI logic by an open breaker
CRL
BOOLEAN
0
POTT or Unblock carrier receive for WEI logic
Table 441:
ECRWPSCH (85) Output signals
Name
Type
Description
IRVL
BOOLEAN
Operation of current reversal logic
TRWEI
BOOLEAN
Trip of WEI logic
ECHO
BOOLEAN
A signal that indicates channel start (CS) by WEI logic
CR
BOOLEAN
POR Carrier signal received from remote end
1MRK505222-UUS C
Section 13
Scheme communication
821
Technical reference manual
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