YASKAWA GA800 Technical Reference page 808

12.5 d: References
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.
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d4-06: Frequency Ref Bias (Up/Down 2)
No.
Name
(Hex.)
d4-06 Frequency Ref Bias (Up/
Down 2)
(02AD)
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.
• H1-xx = 75, 76 [MFDI Function Select = Up/Down 2 Command] is not set.
• The frequency reference source was changed.
This includes switching LOCAL/REMOTE and multi-step speed reference.
• A digital input changed the frequency reference value.
• d4-03 [Up/Down 2 Bias Step Frequency] = 0 and d4-05 = 1 [Up/Down 2 Bias Mode Selection = Reset when
Neither / Both Closed], and the two MFDI terminals set for Up/Down 2 Command [H1-xx = 75/76] are activated or
deactivated.
• The value of E1-04 [Maximum Output Frequency] was changed.
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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 activated. When the frequency
reference changes for more than the level set in d4-07, the drive will hold the bias value, and the drive will accelerate
or decelerate to the frequency reference. When the drive is at the frequency reference, it releases the bias hold and the
bias follows the Up/Down 2 input commands.
This parameter is applicable only when an analog or pulse input sets the frequency reference.
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d4-08: Up/Down 2 Bias Upper Limit
No.
Name
(Hex.)
d4-08 Up/Down 2 Bias Upper
Limit
(02AF)
RUN
The drive saves the set bias upper limit in d4-06 [Frequency Ref Bias (Up/Down 2)]. Set d4-08 an applicable value
before you use the Up/Down 2 function.
808
V/f CL-V/f OLV CLV AOLV
Saves the bias value from the Up/Down 2 Command where the 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. The value is set as a percentage of the Maximum Output Frequency.
V/f CL-V/f OLV CLV AOLV
Sets the upper limit of the Up/Down 2 bias as a percentage of the Maximum Output Frequency.
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
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Default
(Range)
0.0%
(-99.9 - +100.0%)
Default
(Range)
1.0%
(0.1 - 100.0%)
Default
(Range)
100.0%
(0.0 - 100.0%)