ABB REL650 series, Technical Manual, Page: 515 / 856

12.3.4 Signals
Table 342: ZCWSPSCH (85) Input signals
Name Type Default Description
V3P GROUP
SIGNAL
- Three phase group signal for voltage inputs
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
BLKZ 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 343: ZCWSPSCH (85) Output signals
Name Type Description
IRVL BOOLEAN Operation of current reversal logic
TRWEI BOOLEAN Trip of WEI logic
TRWEI_A BOOLEAN Trip of WEI logic in phase A
TRWEI_B BOOLEAN Trip of WEI logic in phase B
TRWEI_C BOOLEAN Trip of WEI logic in phase C
ECHO BOOLEAN A signal that indicates channel start (CS) by WEI logic
12.3.5 Settings
Table 344: ZCWSPSCH (85) Group settings (basic)
Name Values (Range) Unit Step Default Description
CurrRev Disabled
Enabled
- - Disabled Operating mode of Current Reversal Logic
tPickUpRev 0.000 - 60.000 s 0.001 0.020 Pickup time for current reversal logic
tDelayRev 0.000 - 60.000 s 0.001 0.060 Time Delay to prevent Carrier send and local
trip
Table continues on next page
1MRK 506 335-UUS A
Section 12
Scheme communication
509
Technical manual