ABB RELION 650 SERIES, Technical Manual

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18.6.2 Function block
GUID-15AA1D42-912E-4085-8166-33FDC327CEB5 v2
IEC09000946.vsd
CHNGLCK
LOCK* ACTIVE
OVERRIDE
IEC09000946 V2 EN-US
Figure 382: CHNGLCK function block
18.6.3 Signals
GUID-1B253577-C81B-40E3-B406-1F6586DCE545 v2
PID-3786-INPUTSIGNALS v6
Table 589: CHNGLCK Input signals
Name Type Default Description
LOCK BOOLEAN 0 Activate change lock
PID-3786-OUTPUTSIGNALS v6
Table 590: CHNGLCK Output signals
Name Type Description
ACTIVE BOOLEAN Change lock active
OVERRIDE BOOLEAN Change lock override
18.6.4 Operation principle
GUID-74581AA2-6EB4-4CFA-92DA-90FB89F9A62C v3
The Change lock function (CHNGLCK) is configured using ACT.
The function, when activated, will still allow the following changes of the IED
state that does 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:
1MRK 506 382-UEN A
Section 18
Security
Line distance protection REL650 2.2 IEC 791
Technical manual