Bias
Output
frequency
Up 2 command
d4-06 value
5 s
Bias is saved in parameter d4-06
5 s
Figure 5.35 Up/Down 2 Example with Other Reference than Digital Operator and d4-01 = 1
Note: Make sure to set the Up/Down 2 limits properly when using d4-01 = 1 in combination with the Up/Down 2 function.
Refer to d4-08:
Frequency Reference Bias Upper Limit (Up/Down 2) on page 154 and Refer to d4-09: Frequency Reference Bias Lower Limit (Up/
Down 2) on page 154 for details on the limit settings.
Clearing the Value that was Saved
Depending on which function is used, the frequency reference value that was saved can be cleared by:
• Releasing the acceleration hold input.
• Setting an Up or Down command while no Run command is active.
n
d4-03: Frequency Reference Bias Step (Up/Down 2)
Sets the bias that is added to or subtracted from the frequency reference by the Up/Down 2 function.
No. Parameter Name Setting Range Default
d4-03 Frequency Reference Bias Step 0.00 to 99.99 Hz 0.00 Hz
The operation depends on the set value:
Setting d4-03 = 0.0 Hz
While the Up 2 or Down 2 command is enabled, the bias value is increased or decreased using the accel/decel time determined
by parameter d4-04.
Bias
Output
frequency
Bias value is increased using the
accel/decel times as set in d4-04
Up 2 command
Figure 5.36 Up/Down 2 Bias when d4-03 = 0.0 Hz
5.4 d: Reference Settings
152
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
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