HP 30 30 manual FU2-47 PID Operation Selection

Chapter 6 - Parameter Description [FU2]

FU2► SL I-gain		46	3276
46	3276
Factory Default:	3276		3276

SL I-gain is the integral gain of speed controller. If this value is set low, you can get better transient response characteristic and steady state characteristic. However, if this value is set too low, there may be an overshoot in speed control.

☞Note: The response time of a system is affected by the load inertia. For better control performance, set the FU2-37 [Load Inertia] correctly.

Related Functions: FU2-30 ~ FU2-37 [Motor Parameters] FU2-40 [Control Method]

FU2-47: PID Operation Selection

FU2►Proc PI mode		47	0
47 --- No ---
Factory Default:	No		0

This code selects the PID control.

For HVAC or Pump applications, the PID control can be used to adjust the actual output by comparing a feedback with a ‘Set-point’ given to the inverter. This ‘Set-point’ can be in the form of Speed, Temperature, Pressure, Flow level, etc. The ‘Set-point’ and the feedback signals are provided externally to the inverter analog input terminals V1, V2 or I. The inverter compares the signals in calculating ‘total-error’ which is reflected in the inverter output.

Please see FU2-50 to FU2-54 for more detail.

☞Note: PID control can be bypassed to manual operation temporarily by defining one of the multifunction input terminals (P1~P3) to “Open-loop”. The inverter will change to manual operation from PID control when this terminal is ON, and change back to PID control when this terminal is OFF.

Related Functions: DRV-04 [Frequency Mode]

I/O-01 to I/O-10 [Analog Signal Setting] I/O-12 to I/O-14 [Multi-Function Input] EXT-15 to EXT-21 [Pulse Input Setting] FU2-50 to FU2-54 [PID Feedback]

FU2-48: PID Reference Frequency Selection

FU2-49: PID Reference Mode Selection

FU2-50: PID Output Direction Selection

FU2► PID Ref		48	0
48 Ramp freq.
Factory Default:	No		0

This code selects reference frequency for PID control.

[Ramp Freq]: PID control references frequency with Accel and Decel pattern and time.

[Target Freq]: PID control references frequency without Accel and Decel pattern and time.

FU2►PID Ref Mode		49	0
49 Freq mode
Factory Default:	Freq mode		0

This code selects reference input for PID control.

[Freq Mode]: PID control references signal set in DRV-04. When selected other than ‘Freq mode’, PID control references the selected signal regardless the selection in DRV-04.

FU2► PID Out Dir		50	0
50 Ramp Freq.
Factory Default:	Ramp Freq.		0

This code selects the direction of output value of PID controller. The output value is added to reference frequency.

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