Delta Electronics VFD-G manual

Chapter 4 Parameters

Group 10: PID Control Parameters

10 - 00 Input Terminal for PID Feedback

Factory Setting: 00

Settings	00: Disabled
	01: Input via AI1
	02: Input via AI2
	03: Input via External Reference

This parameter is to set the source of PID control feedback signal. The source could be AI1, AI2 or external reference that defined by 04-20.

When this parameter is set to 00, PID feedback control function is disabled.

If this parameter isn’t set to 00, AC drive will automatically start-up PID feedback control. Output frequency is calculated by master frequency and PID feedback signal.

	+		Difference
Target		Position/	Range	P		I		Upper	+
value		Negative						Bound for
02-00		Feedback		10-03	10-04			Integral	+
		10-02						Control
						D	10-06
	Detection				10-05
	Signal
	10-01

+

Primary

Low Pass

FilterTime

10-07

Upper/Lower bound Freq. 01-07/01-08

Frequency Command

10 - 01	PID Control Detection Signal Reference		Unit: 0.1
	Settings	1.0-6550.0	Factory Setting: 1000.0
Please refer to 04-05 to 04-12 if this parameter is set to PID feedback control.
10 - 02	PID Feedback Control Method
			Factory Setting: 00
	Settings	00: Normal (Err=SP-FB)
		01: Inverse (Err=FB-SP)

This parameter could set the calculation method of deviation signal during PID feedback control circuit.

When this parameter is set to 00: when negative feedback control, the deviation equation is deviation = target value - detection signal. When increasing output frequency will increase detection value, this setting should be chose.

4-86 Revision July 2008, EG03, SW V1.06