YASKAWA GA700 Series Technical Manual page 729

• 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.
Note:
When d4-01 = 1 [Freq Reference Hold Selection = Enabled] and b1-01 = 0 [Frequency Reference Selection 1 = Keypad], the drive will
add the bias value to the frequency reference when it does not receive an Up/Down 2 command for 5 s. Then the drive will reset the
value to 0 at which time you can increase the bias to the limit set in d4-08 again.
■
d4-09: Up/Down 2 Bias Lower Limit
No.
Name
(Hex.)
d4-09 Up/Down 2 Bias Lower
Limit
(02B0)
RUN
The drive saves the set bias lower limit in d4-06 [Frequency Ref Bias (Up/Down 2)]. Set d4-09 to an applicable
value before you use the Up/Down 2 function.
Note:
When d4-01 = 1 [Freq Reference Hold Selection = Enabled] and b1-01 = 0 [Frequency Reference Selection 1 = Keypad], the drive will
add the bias value to the frequency reference when it does not receive an Up/Down 2 command for 5 s. Then the drive will reset the
value to 0.
If you increase the bias with the Up 2 command and d4-09 = 0, you cannot use a Down 2 command to decrease the frequency reference.
To decrease speed in this condition, set a negative lower limit in d4-09.
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d4-10: Up/Down Freq Lower Limit Select
No.
Name
(Hex.)
d4-10 Up/Down Freq Lower Limit
Select
(02B6)
0 : Greater of d2-02 or Analog
The higher value between d2-02 [Frequency Reference Lower Limit] and an analog input programmed for
Frequency Reference [H3-02, H3-06, H3-10 = 0] sets the lower frequency reference limit.
YASKAWA SIEPC71061705H GA700 Series Technical Manual
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.
V/f CL-V/f OLV CLV AOLV
Sets the lower limit of the Up/Down 2 bias as a percentage of the Maximum Output Frequency.
V/f CL-V/f OLV CLV AOLV
Sets the lower frequency limit for the Up/Down function.
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
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
12.5 d: References
Default
(Range)
1.0%
(0.1 - 100.0%)
Default
(Range)
100.0%
(0.0 - 100.0%)
Default
(Range)
0.0%
(-99.9 - 0.0%)
Default
(Range)
0
(0, 1)
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