ABB RELION 620 Series Technical Manual page 769

1MAC504801-IB E
9.3.6
620 series ANSI
Technical Manual
GUID-8C044A41-24DE-44D0-AAB4-E52D6BD61BC5 V1 EN
Figure 391: Connection of voltages for the protection relay and signals used in
synchrocheck
Signals
Table 546: 25 Input signals
Name Type
V_BUS SIGNAL
V_LINE SIGNAL
CL_COMMAND BOOLEAN
BYPASS BOOLEAN
BLOCK BOOLEAN
Table 547: 25 Output signals
Name Type
SYNC_INPRO BOOLEAN
SYNC_OK BOOLEAN
CL_FAIL_AL BOOLEAN
Table continues on next page
Default Description
0=False Busbar Voltage
0=False Line Voltage
0=False External closing request
0=False Request to bypass synchronism check and voltage
check
0=False Blocking signal of the synchro check and voltage check
function
Description
Synchronizing in progress
Systems in synchronism
CB closing failed
Section 9
Control functions
763