Hitachi Relion 670 Series Applications Manual page 228

Section 12
Control
Figure 81
commands to an apparatus can be initiated from the Control Centre (CC), the station HMI or the local
HMI on the IED front.
IED
Apparatus
Control
I/O
IEC08000227 V1 EN-US
Figure 81:
Features in the apparatus control function:
• Operation of primary apparatuses
• Select-Execute principle to give high security
• Selection and reservation 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
• Pole discordance supervision
• 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
• Bay control QCBAY
• Bay reserve QCRSV
• Reservation input RESIN
• Local remote LOCREM
• Local remote control LOCREMCTRL
222
shows from which places the apparatus control function receives commands. The
Station HMI
Local
HMI
Apparatus
Control
breakers disconnectors earthing switches
Overview of the apparatus control functions
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cc
GW
Local
HMI
IED
Apparatus
I/O
1MRK506375-UEN Rev. N
Station bus
Local
HMI
IED
Control
I/O
IEC08000227.vsd
Railway application RER670
Application manual