Hitachi Relion 650 Series Technical Manual page 240

Section 12
Monitoring
Trigger
IEC12000047 V1 EN-US
Figure 111: Trigger connections for operation log instances
Configure the instances in ACT such that
• Individual instances do not have any input or output daisy chain connection to any other
operation log component.
• Primary instances have only output daisy chain connection to the secondary operation log
component.
• Secondary instances have input daisy chain connection to a primary or secondary operation log
component and possibly an output daisy chain connection to another secondary instance.
To prevent wrong reporting after configuration changes, the following procedure should be observed:
1. Download the operation log database through WHMI.
2. Write configuration changes to the IED.
3. Clear all operation records and fingerprint records in the IED.
234
Primary 1
OPERLOG
Instance 1
Primary 2
OPERLOG
Instance 4
Individual 1
OPERLOG
Instance 7
With one or more operation records already stored in the database, changes in
OPERLOG related ACT configuration or in OPERLOG parameters may lead to
wrong reporting on LHMI or WHMI.
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Secondary 1 Secondary 2
OPERLOG OPERLOG
Instance 2 Instance 3
Secondary 3 Secondary 4
OPERLOG OPERLOG
Instance 5 Instance 6
Individual 2 Individual 3
OPERLOG OPERLOG
Instance 8 Instance 9
IEC12000047-1-EN.vsd
1MRK 511 557-UEN Rev. A
Technical Manual