ABB RELION 620 Series Technical Manual page 738

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Control functions

Shot initiation

A070869 V1 EN

Example of an autoreclosing program with a reclose scheme matrix

In the AR function, each shot can be programmed to locate anywhere in the reclose

scheme matrix. The shots are like building blocks used to design the reclose program. The

building blocks are called CBBs. All blocks are alike and have settings which give the

attempt number (columns in the matrix), the initiation or blocking signals (rows in the

matrix) and the reclose time of the shot.

The settings related to CBB configuration are:

First...Seventh reclose time

Init signals CBB1...CBB7

Blk signals CBB1...CBB7

Shot number CBB1...CBB7

The reclose time defines the open and dead times, that is, the time between the OPEN_CB

and the CLOSE_CB commands. The Init signals CBBx setting defines the initiation

1MAC504801-IB E

620 series ANSI

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