Toshiba HX7+ ASD, Installation & Operation Manual

Page: 55 / 257

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 F003 and F004 , respectively.
Command Control (F003)
The Command Mode selection of F003 establishes the primary source of the command input for the
ASD. However, the Override feature may supersede the F003 setting as indicated in Table 12 on
page 48 .
Table 12 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
F003 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 LCD Port Connection (Program

Communication

Communication Settings

LCD Port Connection ) 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 Local mode operation may be superseded by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 LCD Port Connection 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 F003 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
• F003 setting (is used if no signal sources are in the Override mode).