Hitachi Relion 650 Series Technical Manual page 70

Section 7
Controlled Switching and Monitoring
To achieve the desired control, monitoring and data logging functionality in PWC600, several function
blocks work in close coordination.
interconnections. Control functionality is mainly handled by SSCPOW function. Monitoring and data
acquisition is handled by ACBMSCBR function, individually per phase. CBCOMP takes the external
parameters like idle time, drive pressure, temperature and spring charge as inputs and provides the
corresponding compensation values per phase.
Command
inputs
Reference Signal
Source voltage /
Current
Idle time
L1\L2\L3
Control
voltage
Drive Pressure
L1\L2\L3
Spring charge
L1\L2\L3
Temperature
L1\L2\L3
Electrical Feedback
Current / Load voltage
Mechanical Feedback
IEC17000167 V3 EN-US
Figure 32:
64
Figure 32
Processed Voltage/
Current Signal
ANSGPROC
3
2
CBCOMP
1
ACBMSCBR
Compensation
L1\L2\L3
Main application functions in PWC600
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shows the main involved function blocks with their
SSCPOW
Correction & Adaptation data
Coordination for Data logging &
acquisition
Data to be
logged
1MRK 511 557-UEN Rev. A
Command
outputs
OPLOGTRIG
Logging
trigger
Technical Manual