Siemens SIPROTEC 7SJ62 Instruction Manual page 103

CLOSE
Command
C+
C–
CC
Relay Configuration:
Figure 5-6 Double Command with Single Contacts plus Common Contact
CLOSING
Command
C+
C–
CCC
Relay Configuration:
Figure 5-7 Double Command on Common Bus with Single Contacts and Common Contact
7SJ62 Manual
C53000-G1140-C121-1
TRIP
Command
BO 1 2 3
X X
X
TRIPPING
Command
BO 1 2 n
X X X
Figure 5-7 shows the common output relay with several switching devices, in contrast
to all other output relays. Simultaneous control of multiple switching devices is
blocked, for safety reasons.
The common output relay automatically acquires the characteristics of the controlling
relay upon issuing of a command to a switching device and, therefore, is not individu-
ally configured. The final command output is via a single contact.
C+
t
C+ C–
Switching Device
CLOSE
COIL
t
Configuration
V+
C–
Switching Device
CLOSE TRIP
COIL COIL
CC
V–
V+
Switching
TRIP
Device 2...n
COIL
CCC
V–
5-9