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User configurable operate condition (PLC#2 connection point)
Same Directional
Controlling Event
Additional condition (PLC#1 connection point)
Command “ON-control” received
Command “OFF control” received
received
DPOS01 function (Function ID: 512001)
Function “Automatic sequence control” is in progress
Double Command Blocking detected*2
Other devices traveling detected*3
Unmatched condition detected *5
Event suppression detected *6
= DPOS01_F_QLT_SPP
BI board connection error detected*7
= DPOS01_F_BI_ERR
From Control hierarchy *9
Figure 4.8-31 Operate condition logic for On/Off in DPOS01
1
Note: “Command Blocking” disables all operation except for its own; “Command
Blocking” is implemented as “CBK” in a software switch controller (SOTFSW).
The IEC61850 standard defines “Command Blocking” as “CmdBlk”. For more
information on “CBK”, see Chapter
Control and monitoring application: Software
switch controller. See the signal “
“CBK_STATE” in Table 4.8-6.
2
Note: “Double Command Blocking” (DCB) is an operation philosophy in the common
control function (CMNCTRL). It can be used to protect the substation. The user
can program it using GR-TIEMS. The DCB operating signal is denoted as “DCB
RCV OR” in Table 4.8-6. For more information see Chapter
Control and
monitoring application
:
Common controls.
3
Note: Detection of event “device-travelling” signifies that other operators are changing
the status of one or more devices. Thus, device operation by the IED should be
inhibited whilst ever the event is being detected. The detection signal is denoted
as “Travelling OR” in Table 4.8-6.
4
Note: If an IED in the process of issuing a trip command, all control operation is blocked
until the trip operation has been completed. If the IED has a relay application, the
trip command is issued at the output point “GEN.TRIP” in Table 4.8-6.
5
Note: The criteria “unmatched conditions” is determined when “Test-bit status” in a
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