Switch Controller (Scswi) - ABB RELION 670 Series Applications Manual

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IEC13000016 V2 EN-US

Figure 297: APC - Local remote function block

Switch controller (SCSWI)

SCSWI may handle and operate on one three-phase device or three one-phase switching

After the selection of an apparatus and before the execution, the switch controller performs

the following checks and actions:

A request initiates to reserve other bays to prevent simultaneous operation.

Actual position inputs for interlocking information are read and evaluated if the operation

is permitted.

The synchrocheck/synchronizing conditions are read and checked, and performs

operation upon positive response.

The blocking conditions are evaluated

The position indications are evaluated according to given command and its requested

direction (open or closed).

The command sequence is supervised regarding the time between:

Select and execute.

Select and until the reservation is granted.

Execute and the final end position of the apparatus.

Execute and valid close conditions from the synchrocheck.

At error the command sequence is cancelled.

1MRK 504 152-UEN B

IEC13000016-2-en.vsd

Application manual