YASKAWA GA700 Technical Manual page 680

11.5 d: Reference Settings
Increase or decrease the bias by using the currently active acceleration and deceleration times.
1 : Use Accel/Decel Time 4
Increase or decrease the bias by using C1-07 [Acceleration Time 4] and C1-08 [Deceleration Time 4].
■
d4-05: Up/Down 2 Bias Mode Selection
No.
Name
(Hex.)
d4-05 Up/Down 2 Bias
Mode Selection
(02AC)
RUN
0 : Hold bias @ no Up/Down selected
The bias value is held if both MFDI terminals set for Up/Down 2 Command [H1-xx = 75, 76] switch ON or OFF.
1 : 0 bias @ neither/both selected
The bias value is reset to 0 if both MFDI terminals set for Up/Down 2 Command [H1-xx = 75, 76] switch ON or
OFF. Also, the drive accelerates and decelerates the motor to the selected output frequency using the acceleration
and deceleration times set in d4-04 [Up/Down 2 Ramp Selection].
■
d4-06: Frequency Ref Bias (Up/Down 2)
No.
Name
(Hex.)
d4-06 Frequency Ref Bias
(Up/Down 2)
(02AD)
The function of d4-06 depends on the Up/Down 2 function configuration.
Note:
Parameter d4-06 is not normally used when a keypad sets the frequency reference.
• When d4-01 = 0 [Freq Reference Retention Select = Disabled] and the frequency reference is set by a source
other than the keypad, the value set in d4-06 is added to the frequency reference. If the value set in d4-06 is a
negative number, it is subtracted from the frequency reference.
• When d4-01 = 1 [Enabled] and the frequency reference is set by a source other than the keypad, the bias value
adjusted with the Up/Down 2 command is stored in d4-06 when 5 seconds have passed after releasing the Up/
Down 2 command. If the value set in d4-06 is added to or subtracted from the frequency reference.
Conditions that Reset or Disable d4-06
The bias value is reset and disabled in the following cases.
• d4-01 = 0 was set and the Run command was cleared.
• H1-xx = 75, 76 [MFDI Function Select = Up/Down 2 Command] is not set.
• The frequency reference source has been changed.
This includes the switching of LOCAL/REMOTE and multi-step speed reference.
• The frequency reference value has been changed via the digital input.
• d4-03 [Up/Down 2 Bias Level] = 0 and d4-05 = 1 [Up/Down 2 Bias Mode Selection = 0 bias @ neither/both
selected] are set, and both MFDI terminals set for Up/Down 2 Command [H1-xx = 75/76] are ON or OFF.
• The value ofE1-04 [Maximum Output Frequency] has been changed.
■
d4-07: Analog Freq Ref Fluctuate Limit
No.
Name
(Hex.)
d4-07 Analog Freq Ref
Fluctuate Limit
(02AE)
RUN
Handles frequency reference changes while Up/Down 2 Command [H1-xx = 75, 76] is ON. If the frequency
reference changes for more than the level set in d4-07, then the bias value will be held, and the drive will
accelerate or decelerate following the frequency reference. When the frequency reference is reached, the bias hold
is released and the bias follows the Up/Down 2 input commands.
680
V/f CL-V/f OLV CLV AOLV
Determines if the bias value is saved to the drive when Up/Down 2
Command [H1-xx = 75, 76] are both released or both enabled. This
parameter is effective only when d4-03 [Up/Down 2 Bias Level] = 0.00.
V/f CL-V/f OLV CLV AOLV
Saves the bias value from the Up/Down 2 Command assuming that E1-04
[Maximum Output Frequency] is 100%.
V/f CL-V/f OLV CLV AOLV
If the frequency reference changes for more than the level set to this
parameter, then the bias value will be held. Parameter E1-04 [Maximum
Output Frequency] is 100%.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
0
(0, 1)
Default Setting
(Range)
0.0%
(-99.9 - +100.0%)
Default
(Range)
1.0%
(0.1 - 100.0%)