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3.16.11.3
L/R control access
Four different Local/Remote control access scenarios are possible depending on the
selected station authority level: “L,R”, “L,R,L+R”, “L,S,R” and “L, S, S+R, L+S, L
+S+R”. If control commands need to be allowed from multiple levels, multilevel
access can be used. Multilevel access is possible only by using the station authority
levels “L,R,L+R” and “L, S, S+R, L+S, L+S+R”. Multilevel access status is available
from IEC 61850 data object CTRL.LLN0.MltLev.
Control access selection is made with R/L button or CONTROL function block and
IEC 61850 data object CTRL.LLN0.LocSta. When writing CTRL.LLN0.LocSta IEC
61850 data object, IEC 61850 command originator category station must be used by
the client, and remote IEC 61850 control access must be allowed by the relay station
authority. CTRL.LLN0.LocSta data object value is retained in the nonvolatile
memory. The present control status can be monitored in the HMI or PCM600 via
Monitoring/Control command
with the
LR state
parameter or from the IEC 61850
data object CTRL.LLN0. LocKeyHMI.
IEC 61850 command originator category is always set by the IEC 61850 client. The
relay supports station and remote IEC 61850 command originator categories,
depending on the selected station authority level.
3.16.11.4
Station authority level “L,R”
Relay's default station authority level is “L,R”. In this scenario only local or remote
control access is allowed. Control access with IEC 61850 command originator
category station is interpreted as remote access. There is no multilevel access.
IEC 61850
remote
IED
IEC 61850
remote
REMOTE
LOCAL
OFF
IEC 61850
remote
IED
IEC 61850
remote
IEC 61850
remote
IEC 61850
remote
IED
GUID-08BACCE4-AF4A-4150-A01A-49FBEE63B438 V1 EN
Figure 98:
Station authority is “L,R”
When station authority level “L,R” is used, control access can be selected using R/L
button or CONTROL function block. IEC 61850 data object CTRL.LLN0.LocSta and
CONTROL function block inputs
CTRL_STA
and
CTRL_ALL
are not applicable for
this station authority level.
Section 3
1MRS758755 A
Basic functions
154
REC615 and RER615
Technical Manual
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