46
HX7+ ASD Installation and Operation Manual
Command Mode and Frequency Mode
Control
Command
control includes instructions such as
Stop
,
Run
,
Jog
, etc. The source of the
Command
signal must be established for normal operation.
Frequency
commands control the output speed of the ASD. The source of the frequency control signal
must be established for normal operation.
The source of the command control and speed control may be either internal or external. Once the
source signal is selected for either function, the system may be configured to use the selected signal all
of the time or switch to another source under user-defined conditions.
Command
and
Frequency
control may be carried out using any one of several control methods (signal
sources) or combinations thereof. In the event that multiple control commands are received
simultaneously, the signal sources are assigned priority levels. Typically, the control method for
Command
and
Frequency
control uses the settings of
and
, respectively.
Command Control (F003)
The
Command Mode
selection of
establishes the primary source of the command input for the
ASD. However, the
Override
feature may supersede the
setting as indicated in
shows the hierarchy of the control sources managed by the
Override
function. The level of the
control item on the hierarchy is listed from left to right, most to least, respectively. As indicated in the
table, the
setting may be overridden by any of the other input sources.
Placing the keypad in the
Local
mode selects either the
RS232/RS485
or the
TTL
as the
Command
Mode
control source. Once in the
Local
mode, the
(Program
Communication
Communication Settings
) setting determines if the
RS232/RS485
or the
TTL
will be used for
Command
control.
Local
mode operation may be superseded by
Communications
activity.
Example:
With the keypad set to
Local
and the
set to
TTL
, an input signal
received from the
Communication Card
or
RS232/RS485
will supersede any received
TTL
command.
The remaining control sources may be placed into the override mode using communications.
The source of the
Command
control signal may be selected by:
•
The
setting,
•
Placing an item from the list below in the
Override
mode via communications, or
•
Placing the keypad in the
Local
mode (places only the RS232/RS485 or the TTL in the Override
mode).
Possible
Command
signal source selections include the following:
•
Terminal Board (default),
•
CN8 Option,
•
TTL,
•
RS232/RS485,
•
Communication Card, or
•
setting (is used if no signal sources are in the Override mode).
Содержание HX7+ ASD
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