Toshiba Q9 Series, Installation And Operation Manual, Page: 43 / 233

Q9 ASD Installation and Operation Manual 33
Frequency Control ( F004 )
The Frequency Mode 1 (or the Frequency Mode 2)
setting establishes the user-selected source of the
frequency-control input for the Q9 ASD. The signal
source selected here is used for speed control unless
the Reference Priority Selection parameter is
configured to switch this setting automatically (See
F200 ) or if the Override feature is enabled.
Table 3 on pg. 34 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 Override setting may supersede the selection at
F004 .
Placing the EOI in the Local mode selects the RS485 (2-Wire) as the Frequency Mode 1 control
source. Local mode operation may be superseded by other Override settings.
Example: With the EOI set to Local, Communication Card input or RS485 (4-Wire) input will
supersede EOI control input.
The remaining control sources may be placed into the Override Mode using communications.
The source of the Frequency control signal may be selected by:
• The F004 setting,
• Placing an item from the list below in the Override Mode via communications, or
• Placing the EOI in the Local mode (places only the RS485 [2-wire] in the Override Mode).
Possible Frequency control source selections include the following:
• Communication Card,
• RS485 (2-Wire),
• RS485 (4-Wire),
• Panel Keypad Option,
• Terminal Block (Default Setting), or
• F004 setting (Used if No Other Items Are in the Override Mode).
Note: The Terminal Board is placed in the Override Mode for Speed control functions by
assigning a discrete terminal to V/I Terminal Priority and connecting the terminal to
CC. Once the discrete terminal is activated, V/I is used as the Terminal Board
Override control item.
Command and Frequency Control Selections
Any or all of the Command and Frequency control sources may be placed in the Override Mode.
Placing the Q9 ASD in the Local mode (Local/Remote LED on) places the RS485 (2-Wire) control
selection in the Override Mode for Command and Frequency input.
Communications may be used to place the remaining Command and eligible Frequency control sources
in the Override Mode. Once placed in the Override Mode this setting is valid until it is cancelled, the
power supply is turned off, or the Q9 ASD is reset.
Command and Frequency control changes may be disabled at parameter F736 .