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CCHN Industry

CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

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Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

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CCHN Industry
 
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CCHN Industry

CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

Blog

Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

...
3 hp VFD, Single Phase to Three Phase VFD
 
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3 hp VFD, Single Phase to Three Phase VFD


$238.14
Low price 3hp VFD, convert 220V/230V/240V 1 phase to 3 phase, 10amps, RS485 enabled, shipping weight 3kg, manufacturer direct
SKU: GK3000-2S0022
Free Shipping Worldwide
Delivery date: 6-12 days

3hp variable frequency drive, 2.2kW, single phase 220V-240V to three phase VFD, 10 amps.

Specification:

BasicsModelGK3000-2S0022
Capacity3 hp (2.2 kW)
Shipping weight3 kg
Dimension190*104*150 mm
I/O FeatureRated current10 A
Input voltage1 phase 220~240V AC
Input frequency50Hz/ 60Hz
Output voltage3 phase AC 0~input voltage
Output frequency0.00~400.00Hz
Over load capacity150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control FeatureControl modeV/F control;
Sensorless vector control;
CommunicationRS485
Speed regulation1:100
Start torque150% of rating torque at 1 Hz
Speed control accuracy≤±0.5% of rating synchronous speed
Frequency precisionDigital setting: max frequency x± 0.01%;
Analog setting: max frequency x± 0.2%
Frequency resolutionAnalog setting: 0.1% of max frequency;
Digital setting: 0.01Hz
Torque boostAutomatic torque boost, manual torque boost 0.1%~30.0%
Interior PID controllerBe convenient to make closed-loop system
Automatic energy save runningOptimize 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 limitingLimit running current automatically to avoid frequent over-current which will cause trip
EnvironmentEnclosure ratingIP 20
Temperature–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
Humidity5%-95%, without condensation
Altitude≤1000m; VFD will be derated if above 1000m
Impingement and oscillationNormal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
Store environment–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

Tips: Variable frequency drive overcurrent
Overcurrent is the most frequent alarm phenomenon of VFD.

A. Phenomenon

  1. When restarting, VFD trips once speed up. This is a very serious phenomenon of overcurrent. The main reasons are: Load short circuit, mechanical parts stuck, inverter module damaged, and smaller motor torque and so on.
  2. Tripping after power on. This phenomenon cannot be reset. The main reasons are: Module broken, bad driving circuit, and bad current detection circuit.
  3. The tripping is not happening when restart but when accelerating, the main reasons are: Acceleration time setting is too short, current upper limit setting is too small, and the torque compensation (V/F) setting is too high.

B. Maintenance examples

  1. The VFD displays "OC" once starting.
    Open the cover and don't find any signs of burn out. Online measure IGBT finds no problems. In order to further determine the problem, disassemble the IGBT and measure the seven high-power transistors, the opening and closing are good. When measuring the upper half of the bridge drive circuit, find a circuit is obviously different with the other two. After careful inspection, find an optocoupler A3120 output pin and negative power supply short circuit. Replace it and test again, three circuits are the same. Finally install IGBT and everything running well.
  2. A 3 hp VFD displays "OC" and cannot be reset.
    First check the inverter module but don't find the problem. Second, check the drive circuit and find no abnormal phenomenon. It is estimated that the problem is not here, and may be in the part of over-current signal processing. Remove the circuit sensor and then power on showing everything is normal, so the sensor has been broken. After replaced with a new sensor, the on-load experiment shows everything normal.