36
H9 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 H9 ASD. The source of the frequency control
signal must be established for normal operation.
The source of the command control and frequency 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 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, the signal
sources are assigned priority levels. The primary 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 3
.
Table 3 on pg. 38
shows the hierarchy of the control
sources managed by the
Override
function. The level
of the control item of the hierarchy is listed from left to right, most to least, respectively. As indicated in
the table, the
Override
setting may supersede the
F003
setting.
Placing the EOI in the
Local
mode selects the
RS485
(2-wire) as the
Command Mode
control source.
Local
mode operation may be superseded by other
Override
settings.
Example:
With the EOI set to
Local
,
Communication Board
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
Command
control signal may be selected by:
• The
F003
setting,
• Placing an item from the
Command
signal source selections in the
Override Mode
via
communications, or
• Placing the EOI in the
Local
mode (places only the RS485 [2-wire] or the RS485 [4-wire] in the
Override Mode).
Possible
Command
signal source selections include the following:
• Terminal Block (default),
• EOI (Keypad),
• RS485,
• Communication Option Board, or
•
F003
setting (is used if no signal sources are in the Override Mode).
Note:
The
Terminal Board
is placed in the
Override Mode
for
Command
functions by
assigning a discrete terminal to
Command Terminal Board Priority
and connecting
the terminal to
CC
. Once activated (Run command required), the
Terminal Board
settings will be used for
Override Command
control (F, R, Preset Speeds, etc.).
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: [email protected]
