Operation Log Trigger - Hitachi Relion 650 Series Technical Manual

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1MRK 511 557-UEN Rev. A

Coordination Input

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Figure 143: Overall block diagram of OPLOGTRIG

This function operates on the sub-functional aspects as described below.

Operation log trigger

After completion of a CB switching operation, OPLOGTRIG generates a trigger signal to OPERLOG

by activating the OPLOGTRIG output for one task time. The conditions for trigger generation are

summarized below.

CLCMD or OPCMD input status change from 0 to 1 or coordination information of "External"

operation received at any one CRDACOPLx input.

Coordination information of "monitoring is completed for CB switching operation" is received for

all three CRDACOPLx inputs. If this coordination information is not received for all three

Technical Manual

Coordination

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