ABB RELION REX640 - Testing of protection relay operation; Selecting IED test mode; Testing and commissioning support on local HMI

3.8.5 Station authority level "L,R,L+R"
Station authority level "L,R, L+R" adds multilevel access support. Control access can
also be simultaneously permitted from local or remote location. Simultaneous local
or remote control operation is not allowed as one client and location at time can
access controllable objects and they remain reserved until the previously started
control operation is first completed by the client. Control access with IEC61850
originator category station is interpreted as remote access.
IEC 61850
remote
IED
IEC 61850
remote
IEC 61850
remote
IED
IEC 61850
remote
IEC 61850
remote
IEC 61850
remote
IED
L+R
IEC 61850
remote
IEC 61850
remote
IED
REMOTE LOCAL OFF
Figure 52: Station authority is “L,R,L+R”
When station authority level "L,R, L+R" is used, the control access can be
selected using R/L button or CONTROL function block. IEC 61850 data object
CTRL.LLN0.LocSta and CONTROL function block input CTRL_STA are not applicable
for this station authority level.
Table 73: Station authority level "L,R,L+R" using R/L button
L/R Control L/R Control status Control access
R/L button CTRL.LLN0.LocSta CTRL.LLN0.MltLev L/R state
CTRL.LLN0.LocKey
HMI
Local user IEC 61850 client
1
Local N/A FALSE 1 x
Remote N/A FALSE 2 x
Local + Remote N/A TRUE 4 x x
Off N/A FALSE 0
Table 74: Station authority “L,R,L+R” using CONTROL function block
L/R Control L/R Control status Control access
Control FB input CTRL.LLN0.LocSta CTRL.LLN0.MltLev L/R state
CTRL.LLN0.LocKey
HMI
Local user IEC 61850 client
2
CTRL_OFF N/A FALSE 0
CTRL_LOC N/A FALSE 1 x
CTRL_STA N/A FALSE 0
CTRL_REM N/A FALSE 2 x
CTRL_ALL N/A TRUE 4 x x
1
Client IEC 61850 command originator category check is not performed.
2
Client IEC 61850 command originator category check is not performed.
Basic functions 1MRS759142 F
138 REX640
Technical Manual