IEC13000016 V1 EN
Figure 96: APC - Local remote function block
10.4.3 Interaction between modules
A typical bay with apparatus control function consists of a combination of logical
nodes or functions that are described here:
• The Switch controller (SCSWI) initializes all operations for one apparatus and
performs the actual switching and is more or less the interface to the drive of one
apparatus. It includes the position handling as well as the control of the position.
• The Circuit breaker (SXCBR) is the process interface to the circuit breaker for the
apparatus control function.
• The Circuit switch (SXSWI) is the process interface to the disconnector or the
earthing switch for the apparatus control function.
• The Bay control (QCBAY) fulfils the bay-level functions for the apparatuses,
such as operator place selection and blockings for the complete bay.
• The function (SELGGIO), deals with reservation of the bay.
• The Four step overcurrent protection (OC4PTOC) trips the breaker.
• The Protection trip logic (SMPPTRC) connects the "trip" outputs of one or more
protection functions to a common "trip" to be transmitted to SXCBR.
1MRK 505 291-UEN A Section 10
Control
233
Application manual
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