38
Q9 Plus ASD Installation and Operation Manual
The
Override
control setting supersedes the setting of the
Command
mode setting (
F003
) and the
Frequency
mode setting (
F004
). However, the
F003
and
F004
settings will be used in the event that the
scan returns the condition that none of the listed items have the
Override
feature turned on (see
Table 3
)
or a discrete input terminal is set to
Serial/Local Switch
and is activated.
Command and Frequency-Control Override Hierarchy
Table 3
lists the input conditions and the resulting output control source selections for
Command
and
Frequency
control
Override
operation. The
Q9 Plus ASD
reads the command registers of the listed
control items from the left to the right.
The first item to be read that has the
Override
feature turned on will be used for
Command
or
Frequency
control.
Table 3. Command and Frequency Control Hierarchy.
Forced F003/
F004 by I/P
Terminal
(Assign to Serial/
Local Switch)
Communication
Card
RS485
(4-Wire)
RS485
(2-Wire)
Panel
F003/F004
(Setting)
Actual Command/
Frequency Mode
1
X
X
X
X
X
F003/F004 Setting
0
1
X
X
X
X
Communication Card
0
0
1
X
X
X
RS232/485
0
0
0
1
X
X
Common Serial
0
0
0
0
1
X
Panel
0
0
0
0
0
1
F003/F004 Setting
Note:
1
= Override feature is active for that input;
X
= Don’t care; and
0
= Override Off
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