Function Block; Signals; Settings; Operation Principle - ABB Relion 650 Series REB650 Technical Manual

1MRK 505 288-UEN A
15.5.3
15.5.4
15.5.5
15.5.6
Technical manual
by active ChangeLock". The CHNGLCK function should be configured so that it is
controlled by a signal from a binary input card. This guarantees that by setting that
signal to a logical zero, CHNGLCK is deactivated. If any logic is included in the signal
path to the CHNGLCK input, that logic must be designed so that it cannot
permanently issue a 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 211: CHNGLCK function block

Signals

Table 392: CHNGLCK Input signals
Name Type
LOCK BOOLEAN
Table 393: 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
Basic IED functions
Default Description
0 Activate change lock
Description
Change lock active
Change lock override
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