12.8 H: Terminal Functions
890 YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Note:
Refer to d4-01: Freq Reference Hold Selection on page 804 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 d4-01: Freq Reference Hold Selection on page 804 for more information.
Figure 12.80 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. Figure 12.80 shows the time chart when Freq Reference Retention Select [d4-01]
is enabled and disabled.
Figure 12.80 Up/Down Command Time Chart
■ 11: Down Command
Setting Value Function Description
11 Down Command
Sets the command to use a push button switch to decrease the drive frequency reference. You must also set Setting 10 [Up
Command].
ON : Decreases the frequency reference.
OFF : Holds the current frequency reference.
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