YASKAWA FSDrive-MV1000 Parameter Manual page 141

d4-03: Frequency Reference Bias Step (Up/Down 2)
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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. During this period, the accel/decel times C1-01 through C1-08 are disregarded.
Figure 2.36
Setting d4-03 ≠ 0.00 Hz
When an Up 2 or Down 2 command is enabled, the bias is increased or decreased in steps corresponding to the value set
in d4-03. The frequency reference changes with the accel/decel times determined by parameter d4-04.
Figure 2.37
d4-04: Frequency Reference Bias Accel/Decel (Up/Down 2)
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Parameter d4-04 determines the accel/decel times that are used for increasing/decreasing the frequency reference 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.
Setting 1: Accel/Decel Time 4
The drive uses accel/decel time 4 set in parameters C1-07 and C1-08.
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
Name
Frequency Reference Bias Step (Up/Down 2)
Output
frequency
Bias
Up 2 command
Figure 2.36 Up/Down 2 Bias when d4-03 = 0.0 Hz
Output
frequency
Bias
Up 2 command
Figure 2.37 Up/Down 2 Bias when d4-03 > 0.0 Hz
Name
Frequency Reference Bias Accel/Decel (Up/Down 2)
2.4 d: Reference Settings
Setting Range
0.00 to 99.99 Hz 0.00 Hz
common_TMonly
Bias value is increased using the
accel/decel times as set in d4-04
common_TMonly
Bias value is increased in steps as
defined in d4-03
Drive uses accel/decel times as
set in d4-04
Setting Range
0 or 1
Default
Default
0
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