ABB RELION SMU615 Technical Manual page 233

1MRS758407 C
Figure 135: OPEN and CLOSE outputs logic for CBXCBR
Opening and closing pulse widths
The pulse width type can be defined with the
provides two modes to characterize the opening and closing pulse widths. When
the
means that the output pulse is deactivated when the object state shows that the
apparatus has entered the correct state. If apparatus fails to enter the correct state,
the output pulse is deactivated after the set
error message is displayed. When the
always use the maximum pulse width, defined by the user-configurable
setting. The
commands. When the apparatus already is in the right position, the maximum pulse
length is given.
Control methods
The command execution mode can be set with the
alternatives for command execution are direct control and secured object control,
which can be used to secure controlling.
The secured object control SBO is an important feature of the communication
protocols that support horizontal communication, because the command
reservation and interlocking signals can be transferred with a bus. All secured
control operations require two-step commands: a selection step and an execution
step. The secured object control is responsible for the several tasks.
• Command authority: ensures that the command source is authorized to operate
the object
• Mutual exclusion: ensures that only one command source at a time can control
the object
• Interlocking: allows only safe commands
• Execution: supervises the command execution
• Command canceling: cancels the controlling of a selected object.
In direct operation, a single message is used to initiate the control action of a
physical device. The direct operation method uses less communication network
SMU615
Technical Manual
OPEN_ENAD
AU_OPEN
Communica�on
TRIP
CLOSE_ENAD
AU_CLOSE
Communica�on
Adaptive pulse is set to "TRUE", it causes a variable pulse width, which
Pulse length setting is the same for both the opening and closing
Pulse length setting does not affect the length of the trip pulse.
The
AND
OR
OR
AND
AND
OR
Adaptive pulse setting. The function
Operation timeout setting, and an
Adaptive pulse is set to "FALSE", the functions
Control functions
Adaptive pulse/
EXE_OP
Pulse length
Adaptive pulse/
EXE_CL
Pulse length
Pulse length
Control model setting. The
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