Inexpensive 2hp VFD, single phase 220V 50Hz/60Hz input, three phase output AC motor variable speed drive, 7.5 amps, manufacturer direct sale.
Delivery date: 15 - 30 days
2 hp VFD, 220V 1 phase to 3 phase variable frequency drive, sale by manufacturer directly.
||2 hp (1.5 kW)
||1 phase 220~240V AC ±15%
||3 phase AC 0~input voltage
|Over load capacity
||150% of rated current for 1 minute, 180% of rated current for 3 seconds
Sensorless vector control;
||150% of rating torque at 1 Hz
|Speed control accuracy
||≤±0.5% of rating synchronous speed
||Digital setting: max frequency x± 0.01%;
Analog setting: max frequency x± 0.2%
||Analog setting: 0.1% of max frequency;
Digital setting: 0.01Hz
||Automatic torque boost, manual torque boost 0.1%~30.0%
|Interior PID controller
||Be convenient to make closed-loop system
|Automatic energy save running
||Optimize V/F curve automatically based on the load to realize power save running
|Automatic voltage regulation (AVR)
||Can keep constant output voltage when power source voltage varies.
|Automatic current limiting
||Limit running current automatically to avoid frequent over-current which will cause trip
||–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
||5%-95%, without condensation
||≤1000m; VFD will be derated if above 1000m
|Impingement and oscillation
||Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
||–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight
Experience: I have found that the use of the "economy" motor certainly sets the table for motor failure in a VFD application, however, the real problem is motor lead length! If you have a very long run to the motor the possibility of harmonic problems certainly exist. However, there is a simple solution to this potential problem; the addition of a reactor package installed between the motor and the VFD. Of all the applications that I was involved in over 30 years I had exactly one problem with motors failing and that occurred when the purchasing agent substituted one of the economy motors for the one that was used in the prototype machine as well as the early production machines at an OEM. In addition, I can remember only a small handful of times when the reactor package was recommended for the application.
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