YASKAWA GA700 Technical Manual page 871

The Up and Down commands are more important than all other frequency references. When the Up/Down
command is enabled, the drive will ignore these frequency references:
• Frequency reference from Keypad [b1-01 = 0]
• Frequency reference from Analog Input [b1-01 = 1]
• Frequency reference from Pulse Train Input [b1-01 = 4]
Table 11.60 shows the Up and Down commands with their operation.
Command status
Up command (10)
OFF
ON
OFF
ON
Combine Frequency Reference Hold Functions and Up/Down Commands
• When you clear the Run command or when d4-01 = 0 [Freq Reference Retention Function = Disabled] and you
restart the drive, the Up/Down command resets to 0.
• When d4-01 = 1 [Enabled], the drive saves the frequency reference set during the Up/Down command. When
you cycle the Run command or restart the drive, the drive saves the frequency reference value and restarts the
motor at this frequency value. After you clear the Run command, activate the terminal set for the Up command
or Down command to set the saved reference value to 0.
Note:
Refer to "d4-01: Freq Reference Retention Select" for more information.
Combine 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].
Use an analog input or d2-02 [Frequency Reference Lower Limit] to set the lower limit value of the frequency
reference. The configurable values change when the setting for d4-10 [Up/Down Freq Lower Limit Select]
changes. When you input a Run command, these are the lower limits of the frequency reference:
• When the lower limit of the frequency reference is set only for d2-02, the drive accelerates the motor to the
lower limit value of the frequency reference at the same time that you input the Run command.
• When the lower limit of the frequency reference is set only for analog input, the drive accelerates the motor 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 these conditions occur, the drive accelerates the motor to the d2-02 setting value when the Run command
is input. When the motor accelerates 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 the analog input and d2-02
– The lower limit value of the analog input is higher than the setting value of d2-02
Note:
Refer to "d4-10: Up/Down Freq Lower Limit Select" for details.
Figure 11.82 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 in Figure
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Table 11.60 Up Command and Down Command
Down command (11)
OFF
OFF
ON
ON
11.82.
11.8 H: Terminal Functions
Drive operation
Keeps the current frequency reference.
Increases the frequency reference.
Decreases the frequency reference.
Keeps the current frequency reference.
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