Option Name
[2] Analog Input 54
[3] Frequency input 29
[4] Frequency input 33
7-28 Low Speed PID Proportional Gain
Default value: 0.0500 Parameter type: Range (0.0000–1.0000)
Setup: All setups Conversion index: -4
Data type: Uint32 Change during operation: True
Enter the speed controller proportional gain and validate when the motor speed is less than parameter 1-53 Model Shift Frequency.
Quick control is obtained at high amplification. However, if the amplification is too great, the process may become unstable.
7-29 Low Speed PID Integral Time
Default value: 100.0 ms Parameter type: Range (1.0–20000.0 ms)
Setup: All setups Conversion index: -1
Data type: Uint32 Change during operation: True
Enter the speed controller integral time and validate when the motor speed is less than parameter 1-53 Model Shift Frequency. Obtain
quick control through a short integral time, though if the integral time is too short, the process becomes unstable. An excessively long
integral time disables the integral action.
4.8.4 7-3* Process PID Ctrl.
7-30 Process PID Normal/ Inverse Control
Default value: [0] Normal Parameter type: Option
Setup: All setups Conversion index: –
Data type: Uint8 Change during operation: True
Normal and inverse controls are implemented by introducing a difference between the reference signal and the feedback signal.
Option Name Description
[0] Normal Set process control to increase the output
frequency.
[1] Inverse Set process control to decrease the output
frequency.
7-31 Process PID Anti Windup
Default value: [1] On Parameter type: Option
Setup: All setups Conversion index: –
Data type: Uint8 Change during operation: True
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Programming Guide | VLT® AutomationDrive FC 360