12.5 d: References
576 YASKAWA SIEPC71061753C GA500 Technical Manual
Remove the Saved Frequency Reference Value
The procedure to remove the saved frequency reference value is different for different functions. Use these
methods to remove the value:
• Release the input programmed for Accel/Decel Ramp Hold [H1-xx = A].
• Set an Up or Down command while no Run command is active.
• Use the Up/Down 2 Command to set d4-06 = 0.0 or set d4-06 = 0.0 during stop.
■ d4-03: Up/Down 2 Bias Step Frequency
No.
(Hex.)
Name Description
Default
(Range)
d4-03
(02AA)
RUN
Up/Down 2 Bias Step
Frequency
Sets the bias that the Up/Down 2 function adds to or subtracts from the frequency reference.
0.00 Hz
(0.00 - 99.99 Hz)
The operation is different for different setting values:
• Setting d4-03 = 0.00 Hz
When the Up/Down 2 Command [H1-xx = 75, 76] is active, the drive uses the accel/decel times set in d4-04
[Up/Down 2 Ramp Selection] to increase or decrease the bias value.
Figure 12.56 Up/Down 2 Bias when d4-03 = 0.00 Hz
• Setting d4-03 ≠ 0.00 Hz
When the Up/Down 2 Command [H1-xx = 75, 76] is active, the drive increases or decreases the bias in steps for
the value set in d4-03. The drive uses the acceleration and deceleration times set in d4-04.
Figure 12.57 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.
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