ABB REB650 - Function Block

15.5.3 Function block
CHNGLCK
LOCK* ACTIVE
OVERRIDE
IEC09000062-1-en.vsd
IEC09000062 V1 EN
Figure 166: CHNGLCK function block
15.5.4 Signals
Table 337: CHNGLCK Input signals
Name Type Default Description
LOCK BOOLEAN 0 Activate change lock
Table 338: CHNGLCK Output signals
Name Type Description
ACTIVE BOOLEAN Change lock active
OVERRIDE BOOLEAN Change lock override
15.5.5 Settings
The function does not have any parameters available in Local HMI or Protection and
Control IED Manager (PCM600)
15.5.6 Operation principle
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
1MRK 505 277-UUS C Section 15
Basic IED functions
395
Technical Manual