Omron SYSDRIVE 3G3FV User Manual page 226

Advanced Operation
Parameter Display name p y
number
b5-07 PID Offset
This parameter can be changed during operation.
Explanation of Set Values
Parameter b5-07 adjusts the PID control offset.
If both the target value and the feedback value are set to zero, adjust the Inverter's output frequency to
zero.
Parameter Display name p y
number
b5-08 PID Delay Time
This parameter can be changed during operation.
Explanation of Set Values
Parameter b5-08 is the low-pass filter setting for PID control outputs.
Parameter b5-08 is preset at the factory to the optimum value for most applications, so there is normal-
ly 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 vibrate, increase the set value so that it is higher than the vibration frequency period. This
will decrease the responsiveness, but it will prevent the vibration.
Jump Frequency Function
While the Inverter is in PID control, a frequency band can be avoided by setting parameters d3-01
through d3-04 to the desired frequencies. Use this function to prevent vibration of the mechanical sys-
tem.
Note The frequency band to be set should be as narrow as possible, otherwise PID control will not func-
tion properly and the mechanical system may vibrate.
PID Control Reverse Characteristics
Use the following parameter to set or adjust PID control characteristics.
Parameter Display name p y
number
b5-09 Output Level Set
Explanation of Settings
Set value
0 Positive PID output.
1 Negative PID output. (–1 is added to the operation result of PID control.)
6-52
Setting g Units Default
range setting
–100.0 % 0.0
to 100.0
Setting g Units Default
range setting
0.00 to Sec 0.00
10.00
Setting g Units Default
range setting
0, 1 --- 0
Valid access levels
V/f V/f with
Control PG
Advanced
Valid access levels
V/f V/f with
Control PG
Advanced
Valid access levels
V/f V/f with
Control PG
Advanced
Contents
Chapter 6
Open Loop Flux
Vector Vector
Open Loop Flux
Vector Vector
Open Loop Flux
Vector Vector