Delta Electronics VFD-VL manual 00-10, 00-11, 00-12, 230V/460V Series, 00-13

Chapter 4 Parameters

Setting 8: To increase torque and control speed precisely. (1:1000). This setting is only for using with permanent magnet motor and others are for induction motor.

	00-10	Reserved
00-11		Reserved
				Unit: 1
00-12		Carrier Frequency
	Control	VF	VFPG SVC FOCPG TQCPG FOCPM	Factory setting: 12
	mode
		Settings	2~15KHz

This parameter determinates the PWM carrier frequency of the AC motor drive.

		230V/460V Series
			40-60 HP
Models	7.5-15HP	20-30HP
	5.5-11kW	15-22kW	30-45kW
Setting Range	2~15kHz	2~15kHz	02-09kHz
Factory Setting	12kHz	9kHz	6kHz

40-100HP

30-75kW

02~15kHz

6kHz

Carrier	Acoustic	Electromagnetic	Heat	Current
		Noise or Leakage
Frequency	Noise		Dissipation	Wave
		Current
	Significant		Minimal
2kH z		Minimal
8kH z
15kHz	Minimal	Significant
			Significant

From the table, we see that the PWM carrier frequency has a significant influence on the electromagnetic noise, AC motor drive heat dissipation, and motor acoustic noise.

00-13	Auto Voltage Regulation (AVR) Function
Control	VF	VFPG	SVC FOCPG TQCPG FOCPM	Factory setting: 0
mode
	Settings	0	Enable AVR
		1	Disable AVR
		2	Disable AVR when deceleration stop

It is used to select the AVR mode. AVR is used to regulate the output voltage to the motor. For example, if V/f curve is set to AC200V/50Hz and the input voltage is from 200 to 264VAC, the output voltage won’t excess AC200V/50Hz. If the input voltage is from 180 to 200V, the output voltage to the motor and the input voltage will be in direct proportion.

When setting Pr.00-13 to 1 during ramp to stop and used with auto accel./decel. function, the acceleration will be smoother and faster.

Revision Nov. 2008, VLE1, SW V1.03 4-27