ABB RELION 620 Series Technical Manual page 1000

Section 9
Control functions
9.2.4
9.2.5
9.2.6
994
Operation principle
Status indication and validity check
The object state is defined by the two digital inputs POSOPEN and POSCLOSE, which
are also available as outputs OPENPOS and CLOSEPOS together with the OKPOS
according to Table 980. The debounces and short disturbances in an input are
eliminated by filtering. The binary input filtering time can be adjusted separately for
each digital input used by the function block. The validity of digital inputs that
indicate the object state is used as additional information in indications and event
logging.
Table 980: Status indication
Input
POSOPEN POSCLOSE
1=True 0=False
0=False 1=True
1=True 1=True
0=False 0=False
Application
In the field of distribution and sub-transmission automation, the reliable control and
status indication of primary switching components both locally and remotely is in a
significant role. These features are needed especially in modern remote controlled
substations. The application area of DCSXSWI and ESSXSWI functions covers
remote and local status indication of, for example, disconnectors, air-break switches
and earthing switches, which represent the lowest level of power switching devices
without short-circuit breaking capability.
Signals
Table 981: DCSXSWI Input signals
Name Type
POSOPEN BOOLEAN
POSCLOSE BOOLEAN
1) Not available for monitoring
Status Output
POSITION OKPOS
(Monitored
data)
1=Open 1=True
2=Closed 1=True
3=Faulty/Bad 0=False
(11)
0=Intermediat 0=False
e (00)
Default Description
0=False
Signal for open position of apparatus from I/O
0=False
Signal for close position of apparatus from I/O
1MRS757644 F
OPENPOS CLOSEPOS
1=True 0=False
0=False 1=True
0=False 0=False
0=False 0=False
1)
1)
620 series
Technical Manual