Local/Remote Control Function Block Control - ABB RELION SMU615 Technical Manual

Basic functions
3.13.8

Local/remote control function block CONTROL

3.13.8.1 Function block
Figure 73: Function block
3.13.8.2 Functionality
Local/Remote control supports multilevel access for control operations in
substations according to the IEC 61850 standard. Multilevel control access with
separate station control access level is not supported by other protocols than IEC
61850.
The actual Local/Remote control state is evaluated by the priority scheme on the
function block inputs. If more than one input is active, the input with the highest
priority is selected. The priority order is "off", "local", "station", "remote", "all".
The actual state is reflected on the CONTROL function outputs. Only one output is
active at a time.
Table 145: Truth table for CONTROL
Input
CTRL_OFF
TRUE
FALSE
FALSE
FALSE
FALSE
FALSE
3.13.8.3 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"
112
CTRL_LOC CTRL_STA
N/A N/A
TRUE N/A
FALSE TRUE
FALSE FALSE
FALSE FALSE
FALSE FALSE
CTRL_REM CTRL_ALL
N/A N/A
N/A N/A
N/A N/A
TRUE TRUE
FALSE TRUE
FALSE FALSE
1MRS758407 C
Output
OFF = TRUE
LOCAL =
TRUE
STATION =
TRUE
REMOTE =
TRUE
ALL = TRUE
OFF = TRUE
SMU615
Technical Manual