Hitachi 670 Series Application Manual page 58

Section 4
Analog and binary signal transfer for line differential protection
Name
CH4
COMFAIL
COMALM
BLKDIFF
ADDRERR
RED_ACT
CRCERROR
TRDELERR
SYNCERR
REMBLKDF
GPSERROR
NOCARR
NOMESS
LNGTHERR
YBIT
LOWLEVEL
Table 9:
Name
COMFAIL
COMALM
BLKDIFF
ADDRERR
RED_ACT
CRCERROR
TRDELERR
SYNCERR
REMBLKDF
GPSERROR
NOCARR
NOMESS
LNGTHERR
YBIT
LOWLEVEL
ADINV1
ADINV2
ADINV3
ADINV4
ADINV5
ADINV6
ADINV7
Table continues on next page
52
Type
STRING
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
LDCMRecBinS2_2M Output signals
Type
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
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Description
Remote communication channel 4
Detected error in the differential communication
Delayed alarm signal for communication failure
Link error, values are substituted, diff protection is blocked
Incoming message from non-valid address
Redundant channel active
Identified error by CRC check in incoming message
Transmission time is longer than permitted
Error in echo synchronization
Remote terminal indicates diff protection is blocked
Problem with GPS synchronization in remote or local end
No carrier is detected in the incoming message
No start and stop flags identified for the incoming message
Wrong length of the incoming message
Detected error in remote end with incoming message
Low signal level on the receive link
Description
Detected error in the differential communication
Delayed alarm signal for communication failure
Link error, values are substituted, diff protection is blocked
Incoming message from non-valid address
Redundant channel active
Identified error by CRC check in incoming message
Transmission time is longer than permitted
Error in echo synchronization
Remote terminal indicates diff protection is blocked
Problem with GPS synchronization in remote or local end
No carrier is detected in the incoming message
No start and stop flags identified for the incoming message
Wrong length of the incoming message
Detected error in remote end with incoming message
Low signal level on the receive link
Analog data invalid in remote end
Analog data invalid in remote end
Analog data invalid in remote end
Analog data invalid in remote end
Analog data invalid in remote end
Analog data invalid in remote end
Analog data invalid in remote end
Communication set-up, 670/650 series
1MRK505382-UEN Rev. K
PID-6474-OUTPUTSIGNALS v2
Application Guide