ABB REQ650 - Page 235

Station HMI
GW
cc
Station bus
breakers disconnectors earthing switches
IEC08000227.vsd
Apparatus
Control
IED
I/O
Local
HMI
Apparatus
Control
IED
I/O
Apparatus
Control
IED
I/O
Local
HMI
Local
HMI
IEC08000227 V1 EN
Figure 94: Overview of the apparatus control functions
Features in the apparatus control function:
• Operation of primary apparatuses
• Select-Execute principle to give high security
• Selection function to prevent simultaneous operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position indications
• Substitution of position indications
• Overriding of interlocking functions
• Overriding of synchrocheck
• Operation counter
• Suppression of Mid position
The apparatus control function is realized by means of a number of function blocks
designated:
• Switch controller SCSWI
• Circuit breaker SXCBR
• Circuit switch SXSWI
• Position evaluation POS_EVAL
• Select release SELGGIO
1MRK 505 291-UEN A Section 10
Control
229
Application manual