1.4 d: Reference Settings
106
YASKAWA ELECTRIC
SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
• When the frequency reference source has been changed (including LOCAL/REMOTE or
external reference 1/external reference 2 switch over by digital inputs)
• If d4-03 = 0 Hz, d4-05 = 1 and the Up/Down 2 commands are both open or both closed
• Any changes to the maximum frequency set to E1-04
■
d4-07: Analog Frequency Reference Fluctuation Limit (Up/Down 2)
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.
■
d4-08: Frequency Reference Bias Upper Limit (Up/Down 2)
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.
■
d4-09: Frequency Reference Bias Lower Limit (Up/Down 2)
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 can not 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.
Parameter Name
Setting Range
Default
d4-07
Analog Frequency Reference Fluctuation Limit
0.1 to 100.0%
1.0%
No.
Parameter Name
Setting Range
Default
d4-08
Frequency Reference Bias Upper Limit
0.0 to 100.0%
0.0%
No.
Parameter Name
Setting Range
Default
d4-09
Frequency Reference Bias Lower Limit
-99.9 to 0.0%
0.0%
Summary of Contents for OYMC V1000
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