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This VFD can be used for constant torque loads ( such as hard starting: Air compressors, HVAC units) and variable torque loads (such as pumps, fans, etc). It can be used as a motor speed control and a phase converter. The input for this VFD is 1 or 3 phase as you like. You can control the different speed as you like when yo use this VFD. Many customer bought this VFD from us to use for: Lathes, Mills, Car Hoists, Pumps & Conveyors, etc and then performance excellently. This item use Sine wave PWN (SPWM ) for the control system and performance excellently.

Control Mode		SPWM
Input Power		220V class：220±15% 50hz
5-Digits Display & Status Indicator Lamp		Displaying frequency, current, revolution, voltage, counter, temperature, FOR or REV rotation, and fault, etc.
Communication Control		RS-485
Working Temperature		-10~40℃
Humidity		0-95% Relative Humidity（without dew）
Vibration		Below 0.5G
Frequency Control	Range	0.1~2500.0Hz
	Accuracy	Digital: 0.1%（-10~40℃）; Analog: 0.1% （25±10℃）
	Setting Resolution	Digital: 0.1Hz; Analog: 1‰ of max. Operating frequency
	Output Resolution	0.1Hz
	Operator Setting Method	Press directly ←∧∨ to set.
	Analog Setting Method	External Voltage 0-5V，0-10V，4-20mA，0-20mA.
	Other Functions	Frequency lower limit, starting frequency, stopping frequency, three skip frequencies can be respectively set.
General Control	Ramp Control	Selectable 4-speed steps ramp-up and -down time (0.1-6500s).
	V/F Curve	Set V/F curve at will.
	Torque Control	Torque increase settable by max. 10.0%. The starting torque can reach 150% at 1.0Hz.
	Multi-Inputs	6 multi-function input terminals for 8–speed steps control, program operation, switching of 4-speed Ramp, UP/DOWN function, counter, external emergency stop and other functions.
	Multi-Outputs	5 multi-output for displaying of running, zero speed, counter, external abnormity, program operation and other information and warnings.
	Other Functions	Auto Voltage Regulation（AVR）, Decelerating Stop or Coasting Stop, DC Braking, Auto Reset and Restart, Frequency Track, PLC Program Control, Traverse Control, Drawing Control、Auto Energy Saving, Carrier Adjustable (Up to 20KHz), etc.
Protection Functions	Overload Protection	Electronic relay protection motor drive Drive（for constant torque150%/1 min. for the kinds of fan 120%/1min.）
	FuseProtection	When the fuse breaks , the motor will stop.
	Over-voltage	220V class：DC Voltage ＞400V
	Under-voltage	220V class：DC Voltage ＜200V
	Restart After Instant Stop	Restart with Frequency Track afterInstant Stop
	Stall Protection	Stall protection in ramp operation
	Output Short Circuit	Electrical circuit protection
	Other Functions	Fin over-heat protection, restriction of reverse running, direct start after power on, fault reset, parameter lock PID, one-drive-more, etc.