Signals - ABB RELION REX640 Technical Manual

1MRS759142 C
5.11.6
REX640
Technical Manual
• Unblock mode = "Off": The unblocking function is disabled.
• Unblock mode = "Permanent": If the CRG signal disappears for a longer time
period than defined in the Loss of carrier time setting, a logical carrier received
signal CRL is generated. The CRL signal remains active until the CRG signal is
present. The communication failure is not signalled by the LCG output. The Loss
of carrier time setting is set to "35" ms.
• Unblock mode = "Time window": If the CRG signal disappears for a longer time
period than the Loss of carrier time setting, a CRL signal is generated. The CRL
signal remains active for 150 ms, after which a communication failure is signalled
by the LCG output. The value of the LCG output is reset 200 ms after the CRG
signal reappears. The Loss of carrier time setting is set to "35" ms.

Signals

Table 1084: RESCPSCH Input signals
Name Type
BLOCK BOOLEAN
BLK_CS_OPR BOOLEAN
CSBLK BOOLEAN
CACC BOOLEAN
CSOR BOOLEAN
CSUR BOOLEAN
CR_PRM BOOLEAN
CR_BLOCKING BOOLEAN
CR_INTER_TR BOOLEAN
CRG BOOLEAN
Table 1085: RESCPSCH Output signals
Name Type
OPERATE BOOLEAN
CS_PRM BOOLEAN
CS_BLOCKING BOOLEAN
CS_INTER_TR BOOLEAN
CRL BOOLEAN
LCG BOOLEAN
Protection related functions
Default Description
0=False Block signal for activating the blocking mode
0=False Signal for blocking CS and OPR in all schemes
0=False Reverse residual overcurrent signal for Carrier
Send
0=False Signal to be used for tripping by Communication
Scheme
0=False Overreaching residual overcurrent signal for
Carrier Send
0=False Underreaching residual overcurrent signal for
Carrier Send
0=False Received teleprotection permissive from the other
side
0=False Received teleprotection blocking from the other
side
0=False Received direct trip from the other side
0=False Carrier guard signal received
Description
Operate
Permissive transmitted to the other side
Blocking transmitted to the other side
Direct trip transmitted to the other side
Carrier received after unblock logic
Loss of guard
Section 5
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