YASKAWA VS-606V7 Series Instruction Manual page 108

• Integral (I) Limit (n134)
Constant
No.
n134
Upper limit of integral values
This constant prevents the calculated value of the integral control from
exceeding the fixed amount.There is normally no need to change the set-
ting.
Reduce the setting if there is a risk of load damage, or of the motor going
out of step by the inverter' response when the load suddenly changes. If
the setting is reduced too much, the target value and the feedback value
will not match.
Set this constant as a percentage of the maximum output frequency with
the maximum frequency as 100%.
• PID Offset Adjustment (n133)
Constant
No.
n133
PID Offset adjustment
Constant n133 adjusts the PID control offset.
If both the target value and the feedback values are set to zero, adjust the
inverter output frequency to zero.
• PID Primary Delay Time Constant (n135)
Constant
No.
Primary delay time constant
n135
of PID output
Constant n135 is the low-pass filter setting for PID control outputs.
There is normally no need to change the setting.
If the viscous friction of the mechanical system is high or if the rigidity is
low causing the mechanical system to resonate, increase the setting so
that it is higher than the resonance frequency period.
108
Name Unit
Name Unit
%
Name Unit
0.1 s
Setting
Range
%
0 to 100
Setting
Range
-100 to 100
Setting
Range
0.0 to 10.0
Initial
Setting
100
Initial
Setting
0
Initial
Setting
0.0