Function Block - ABB Relion Technical Manual

1MRK 502 048-UUS A
17.5.3
17.5.4
17.5.5
17.5.6
Technical manual
logical one to the CHNGLCK input. If such a situation would occur in spite of these
precautions, then please contact the local ABB representative for remedial action.

Function block

CHNGLCK
LOCK* ACTIVE
OVERRIDE
IEC09000062-1-en.vsd
IEC09000062 V1 EN
Figure 305: CHNGLCK function block
Signals
Table 505: CHNGLCK Input signals
Name Type
LOCK BOOLEAN
Table 506: CHNGLCK Output signals
Name Type
ACTIVE BOOLEAN
OVERRIDE BOOLEAN
Settings
The function does not have any parameters available in Local HMI or Protection and
Control IED Manager (PCM600)
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
Default Description
0 Activate change lock
Description
Change lock active
Change lock override
Section 17
Basic IED functions
683