Delta Electronics VFD-EL manual AVR function disabled for stop

Chapter 4 Parameters

08.17Automatic Energy-saving

Factory Setting: 0

Settings	0	Energy-saving operation disabled
	1	Energy-saving operation enabled

Output

Voltage

100%

70%

During auto-energy saving operation is the output voltage lowered as much as possible to keep the load. The output voltage is maximally lowered to 70% of the normal output voltage

Output Frequency

08.18Automatic Voltage Regulation (AVR)

Factory Setting: 0

Settings	0	AVR function enabled
	1	AVR function disabled
	2	AVR function disabled for deceleration
	3	AVR function disabled for stop

The rated voltage of the motor is usually 230V/200VAC 50Hz/60Hz and the input voltage of the AC motor drive may vary between 180V to 264 VAC 50Hz/60Hz. Therefore, when the AC motor drive is used without AVR function, the output voltage will be the same as the input voltage. When the motor runs at voltages exceeding the rated voltage with 12% - 20%, its lifetime will be shorter and it can be damaged due to higher temperature, failing insulation and unstable torque output.

AVR function automatically regulates the AC motor drive output voltage to the Maximum Output Voltage (Pr.01.02). For instance, if Pr.01.02 is set at 200 VAC and the input voltage is at 200V to 264VAC, then the Maximum Output Voltage will automatically be reduced to a maximum of 200VAC.

When the motor ramps to stop, the deceleration time is longer. When setting this parameter to 2 with auto acceleration/deceleration, the deceleration will be quicker.

4-82 Revision August 2008, 2ELE, V1.02