YASKAWA GA700 Technical Manual page 761

Command status
Up command (10)
OFF
ON
OFF
ON
Combine Frequency Reference Hold Functions and Up/Down Commands
• When the Run command is cleared, or when the drive is restarted when d4-01 = 0 [Freq Reference Retention
Function = Disabled], the Up/Down command will reset to 0.
• When parameter d4-01 = 1 [Enabled], the drive saves the frequency reference set during the Up/Down
command. If the Run command is cycled or the drive is restarted, the drive stores the frequency reference value
and restarts the motor at this frequency value. After the Run command is cleared, turn ON the terminal set for
the Up command or Down command to reset the stored reference value to 0.
Note:
Refer to "d4-01: Freq Reference Retention Select" for details.
Combining Upper/Lower Limits of the Frequency Reference and the Up/Down Commands
Set the upper limit value of the frequency reference to d2-01 [Frequency Reference Upper Limit].
The lower limit value of the frequency reference can be set with analog input or ind2-02 [Frequency Reference
Lower Limit]. The configurable values differ depending on the setting for d4-10 [Up/Down Freq Lower Limit
Select]. When the Run command is executed, the lower limits of the frequency reference are as follows.
• When the lower limit of the frequency reference is set only for d2-02, the drive accelerates the motor up to the
lower limit value of the frequency reference at the same time the Run command is input.
• When the lower limit of the frequency reference is set only for analog input, the drive accelerates the motor up
to the lower limit value of the frequency reference when the Run command, and Up command or Down
command for the drive is enabled. When only the Run command is enabled, the motor does not start.
• When the following conditions are present, the drive accelerates the motor up to d2-02 setting value if the Run
command is input. When the motor has accelerated to the setting value of d2-02, if the Up/Down command is
enabled, the motor accelerates to the lower limit value of the analog input.
– The lower limit value of the frequency reference is set for both the analog input and d2-02
– The lower limit value of the analog input is higher than the setting value ofd2-02
Note:
Refer to "d4-10: Up/Down Freq Lower Limit Select" for details.
The following time chart shows an example of how Up/Down command operates. In this example, the lower limit
value of the frequency reference is set in d2-02. The time chart when Freq Reference Retention Select [d4-01] is
enabled and disabled is shown below.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Table 11.46 Up Command and Down Command
Down command (11)
OFF Holds the current frequency reference.
OFF Raises the frequency reference.
ON Lowers the frequency reference.
ON Holds the current frequency reference.
Figure 11.76 Up/Down Command Time Chart
11.8 H: Terminal Functions
Drive operation
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