YASKAWA iQpump Micro CIMR-PW Series User Manual page 154

5.4 d: Reference Settings
d4-07: Analog Frequency Reference Fluctuation Limit (Up/Down 2)
n
This parameter is for handling changes in the frequency reference while the terminal set for Up 2 or Down 2 is enabled. If the
frequency reference changes for more than the level set to 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.
Parameter d4-07 is applicable only if the frequency reference is set by an analog or pulse input.
No.
d4-07
d4-08: Frequency Reference Bias Upper Limit (Up/Down 2)
n
Parameter d4-08 sets the upper limit of the Up/Down 2 bias (monitor U6-20) and the value that can be saved in parameter
d4-06. Set this parameter to an appropriate value before using the Up/Down 2 function.
Note:
When the frequency reference is set by the digital operator (b1-01 = 0) and d4-01 = 1, the bias value will be added to the frequency reference
if no Up/Down 2 command is received for 5 s, and will be reset to 0 afterwards. From that point the bias can be increased up to the limit
set in d4-08 again.
No.
d4-08
d4-09: Frequency Reference Bias Lower Limit (Up/Down 2)
n
Parameter d4-08 sets the lower limit of the Up/Down 2 bias (monitor U6-20) and the value that can be saved in parameter
d4-06. Set this parameter to an appropriate value before using the Up/Down 2 function.
Note: When the frequency reference is set by the digital operator (b1-01 = 0) and d4-01 = 1, the bias value will be added to the frequency reference
if no Up/Down 2 command is received for 5 s, and will be reset to 0 afterwards. If the bias is increased using the Up 2 command, once it is
added to the frequency reference the speed cannot be reduced with a Down 2 command if the limit set in d4-09 is 0. In this case make sure
to set a negative lower limit in d4-09 to allow speed reduction.
No.
d4-09
d4-10: Up/Down Frequency Reference Limit Selection
n
Selects how the lower frequency limit is set when the Up/Down function is used.
Function on page 165 for details on the Up/Down function in combination with frequency reference limits.
Setting 0: Lower Limit is Determined by d2-02 or Analog Input
The lower frequency reference limit is determined by the higher value of both, parameter d2-02 or an analog input that is
programmed for "Frequency Bias" (H3-02/10 = 0).
Note: If the external reference change over function (H1-oo = 2) used to switch between Up/Down function and analog input as reference source,
the analog value would become the lower reference limit when the Up/Down reference is active. Change d4-10 to 1 to make the Up/Down
function independent of the analog input value.
Setting 1: Lower Limit is Determined by Parameter d2-02
Only parameter d2-02 sets the lower frequency reference limit.
154
Parameter Name
Analog Frequency Reference Fluctuation Limit
Parameter Name
Frequency Reference Bias Upper Limit
Parameter Name
Frequency Reference Bias Lower Limit
Setting Range
0.1 to 100.0%
Setting Range
0.0 to 100.0%
Setting Range
-99.9 to 0.0%
Refer to Settings 10 and 11: Up/Down
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Default
1.0%
Default
100.0%
Default
0.0%