ABB Relion 670 Series Technical Reference Manual page 827

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