YASKAWA GA800 Series, Техническое описание

Страница: 750 / 1016

12.5 d: References
750 YASKAWA SIEPC71061737B GA800 Drive Technical Reference
■
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.
• 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.
■
d4-07: Analog Freq Ref Fluctuate Limit
No.
(Hex.)
Name Description
Default
(Range)
d4-07
(02AE)
RUN
Analog Freq Ref Fluctuate
Limit
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.
1.0%
(0.1 - 100.0%)
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.
■
d4-08: Up/Down 2 Bias Upper Limit
No.
(Hex.)
Name Description
Default
(Range)
d4-08
(02AF)
RUN
Up/Down 2 Bias Upper
Limit
Sets the upper limit of the Up/Down 2 bias as a percentage of the Maximum Output Frequency.
100.0%
(0.0 - 100.0%)
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.
V/f CL-V/f OLV CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
V/f CL-V/f OLV CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
V/f CL-V/f OLV CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV