12.5 d: References
728 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Figure 12.69 Up/Down 2 Bias when d4-03 ≠ 0.00 Hz
■ d4-04: Up/Down 2 Ramp Selection
No.
(Hex.)
Name Description
Default
(Range)
d4-04
(02AB)
RUN
Up/Down 2 Ramp Selection
Sets the acceleration and deceleration times for the Up/Down 2 function to apply the bias to the
frequency reference.
0
(0, 1)
0 : Use Selected Accel/Decel Time
Use the active acceleration and deceleration times to increase or decrease the bias.
1 : Use Accel/Decel Time 4
Use C1-07 [Acceleration Time 4] and C1-08 [Deceleration Time 4] to increase or decrease the bias.
■ d4-05: Up/Down 2 Bias Mode Selection
No.
(Hex.)
Name Description
Default
(Range)
d4-05
(02AC)
RUN
Up/Down 2 Bias Mode
Selection
Sets the function that saves the bias value to the drive when you open or close the two Up/Down 2
Commands [H1-xx = 75, 76]. Set d4-03 [Up/Down 2 Bias Step Frequency] = 0.00 before you set
this parameter.
0
(0, 1)
0 : Hold when Neither Up/Down Closed
When the two MFDI terminals set for Up/Down 2 Command [H1-xx = 75, 76] activate or deactivate, the drive
will hold the bias value.
1 : Reset when Neither / Both Closed
When the two MFDI terminals set for Up/Down 2 Command [H1-xx = 75, 76] activate or deactivate, the drive
will reset the bias value to 0. The drive will use the acceleration and deceleration times set in d4-04 [Up/Down 2
Ramp Selection] to accelerate and decelerate the motor to the selected output frequency.
■ d4-06: Frequency Ref Bias (Up/Down 2)
No.
(Hex.)
Name Description
Default
(Range)
d4-06
(02AD)
Frequency Ref Bias (Up/
Down 2)
Saves the bias value from the Up/Down 2 Command where the Maximum Output Frequency is
100%.
0.0%
(-99.9 - +100.0%)
The Up/Down 2 function setting changes the function of d4-06:
Note:
When the keypad sets the frequency reference, you do not usually use parameter d4-06.
• When d4-01 = 0 [Freq Reference Hold Selection = Disabled] and a source other than the keypad sets the
frequency reference, the drive adds the value set in d4-06 to the frequency reference. If the value set in d4-06 is
a negative number, the drive will subtract it from frequency reference.
• When d4-01 = 1 [Enabled] and a source other than the keypad sets the frequency reference, the drive will store
the bias value adjusted with the Up/Down 2 command in d4-06 5 seconds after you release the Up/Down 2
command. The drive adds or subtracts the value set in d4-06 to the frequency reference.
Conditions that Reset or Disable d4-06
The drive resets and disables the bias value in these conditions:
• d4-01 = 0 and the Run command was cleared.
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