Bay Control Qcbay - ABB Relion Technical Manual

1MRK 502 048-UUS A
12.2.9.2
Technical manual
Error handling
Depending on the error that occurs during the command sequence, the error signal will be
set with a value. Table 233
specified in IEC 61850-8-1 standard. The list of values of the "cause" are in order of
priority. The values are available over the IEC 61850. An output L_CAUSE on the
function block indicates the latest value of the error during the command.
Table 233: Values for "cause" signal in priority order
Apparatus control Description
function
–22 wrongCTLModel
–23 blockedForCommand
–24 blocked-for-open-command
–25 blocked-for-close-command
–30 longOperationTime
–31 switch-not-start-moving
–32 persistent-intermediate-state
–33 switch-returned-to-initial-position
–34 switch-in-bad-state
–35 not-expected-final-position

Bay control QCBAY

The functionality of the Bay control (QCBAY) function is not defined in the IEC 61850–
8–1 standard, which means that the function is a vendor specific logical node.
The function sends information about the Permitted Source To Operate (PSTO) and
blocking conditions to other functions within the bay for example, switch control
functions, voltage control functions and measurement functions.
Local panel switch
The local panel switch is a switch that defines the operator place selection. The switch
connected to this function can have three positions remote/local/off. The positions are
here defined so that remote means that operation is allowed from station/remote level and
local from the IED level. The local/remote switch is also on the control/protection IED
itself, which means that the position of the switch and its validity information are
connected internally, and not via I/O boards. When the switch is mounted separately from
the IED the signals are connected to the function via I/O boards.
When the local panel switch (or LHMI selection, depending on the set source to select this)
is in Off position, all commands from remote and local level will be ignored. If the position
describes vendor specific cause values in addition to these
Section 12
Control
377