Signals - ABB RELION REX640 Technical Manual

Section 9
Control functions
9.5.7
1396
GUID-9E70FE04-85E5-4A6E-8B98-FFBB4AE1433E V1 EN
Figure 748: Connection of voltages for the protection relay and signals used in
synchrocheck

Signals

Table 1346: SECRSYN Input signals
Name Type
U3P1 SIGNAL
U3P2 SIGNAL
BLOCK BOOLEAN
CL_COMMAND BOOLEAN
BYPASS BOOLEAN
Table 1347: SECRSYN Output signals
Name Type
SYNC_INPRO BOOLEAN
SYNC_OK BOOLEAN
CL_FAIL_AL BOOLEAN
CMD_FAIL_AL BOOLEAN
LLDB BOOLEAN
LLLB BOOLEAN
DLLB BOOLEAN
DLDB BOOLEAN
Default Description
- Three-phase voltages 1
- Three-phase voltages 2
0=False Blocking signal of the synchro check and voltage
check function
0=False External closing request
0=False Request to bypass synchronism check and voltage
check
Description
Synchronizing in progress
Systems in synchronism
CB closing failed
CB closing request failed
Live Line, Dead Bus
Live Line, Live Bus
Dead Line, Live Bus
Dead Line, Dead Bus
1MRS759142 C
REX640
Technical Manual