YASKAWA U1000 Series Technical Manual page 236

5.4 d: Reference Settings
Note: Make sure to set the limits for Up/Down 2 properly when using d4-01 = 1 in combination with the Up/Down 2 function.
d4-08: Frequency Reference Bias Upper Limit (Up/Down 2) on page 237
Lower Limit (Up/Down 2) on page 238
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 input programmed for Acceleration hold.
• Setting an Up or Down command while no Run command is active.
• Parameter d4-06 is reset to zero. Refer to
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.
d4-03
The operation depends on the set value:
Setting d4-03 = 0.00 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.
Figure 5.48
Setting d4-03 ≠ 0.00 Hz
When an Up 2 or Down 2 command is enabled, the bias is increased or decreased in steps for the value set in d4-03. The
frequency reference changes with the accel/decel times determined by parameter d4-04.
Figure 5.49
d4-04: Frequency Reference Bias Accel/Decel (Up/Down 2)
■
Parameter d4-04 determines the accel/decel times that are used for increasing/decreasing the frequency reference or bias
when the Up/Down 2 function is used.
No.
d4-04
Setting 0: Current Accel/Decel Time
The drive uses the currently active accel/decel time.
236
for details on the limit settings.
d4-06: Frequency Reference Bias (Up/Down 2) on page 237
Parameter Name
Frequency Reference Bias Step (Up/Down 2)
Output
frequency
Bias
Up 2 command
Figure 5.48 Up/Down 2 Bias when d4-03 = 0.0 Hz
Output
frequency
Bias
Up 2 command
Figure 5.49 Up/Down 2 Bias when d4-03 > 0.0 Hz
Parameter Name
Frequency Reference Bias Accel/Decel (Up/Down 2)
and Refer to d4-09: Frequency Reference Bias
Setting Range
0.00 to 99.99 Hz
Bias value is increased using the
accel/decel times as set in d4-04
Bias value is increased in steps as
defined in d4-03
Drive uses accel/decel times as
set in d4-04
Setting Range
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Refer to
for details.
Default
0.00 Hz
Default
0 or 1 0