Operation Principle; Ied Identifiers Terminalid; Identification; Functionality - Hitachi Relion 650 Series Technical Manual

Section 14
Basic IED functions
14.6.6

Operation principle

The Change lock function (CHNGLCK) is configured using ACT.
The function, when activated, prevents changes to application configuration and settings. However, it
will still allow the following changes of the IED state that do not involve reconfiguring of the IED:
• Monitoring
• Reading events
• Resetting events
• Reading disturbance data
• Clear disturbances
• Reset LEDs
• Reset counters and other runtime component states
• Control operations
• Set system time
• Enter and exit from test mode
• Change of active setting group
The binary input signal LOCK controlling the function is defined in ACT or SMT:
Table 363: Change lock activation
LOCK input
1
0
The change lock functionality can temporarily be disabled/overridden using the Maintenance menu.
Go to Maintenance menu /Recovery Menu(Password Protected) /Turn off Change-lock
(Temporary) to disable or override the functionality.
Turning off the change-lock overrides the change lock function until the next reboot of the IED. In this
case, the change-lock function cannot be activated, which is indicated by the OVERRIDE output
(value 1).
14.7

IED identifiers TERMINALID

14.7.1

Identification

Function description
IED identifiers
14.7.2

Functionality

IED identifiers (TERMINALID) function allows the user to identify the individual IED in the system, not
only in the substation, but in a whole region or a country.
390
IEC 61850
identification
TERMINALID
Use only characters A-Z, a-z and 0-9 in station, object and unit names.
© 2021 Hitachi Energy. All rights reserved.
Function
Change lock activated
Change lock deactivated
IEC 60617 ANSI/IEEE C37.2
identification device number
- -
1MRK 511 557-UEN Rev. A
D0E6766T201305151403 v2
D0E7438T201305151403 v1
D0E7471T201305151403 v1
Technical Manual