Description

5 hp (3.7/4 kW) variable frequency drive, three phase 230V, 400V, 480V for selection, manufacturer direct sale.
Specification:

Basics	Model	GK3000-4T0037G/ GK3000-2T0037G
Capacity	5 hp (3.7 kW)
Shipping weight	3 kg
Dimension	236130176 mm for GK3000-4T0037G/ 272172182 for GK3000-2T0037G
I/O Feature	Rated current	9A at 380V ~ 480V, 13A at 220V ~ 240V
Input voltage	3 phase 230V /400V /480V AC ±15% (Optional)
Input frequency	50Hz/ 60Hz
Output voltage	3 phase AC 0~input voltage
Output frequency	0Hz~1000Hz
Over load capacity	150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control Feature	Control mode	V/F control; Sensorless vector control;
Communication	RS485
Speed regulation	1:100
Start torque	150% of rating torque at 1 Hz
Speed control accuracy	≤±0.5% of rating synchronous speed
Frequency precision	Digital setting: max frequency x± 0.01%; Analog setting: max frequency x± 0.2%
Frequency resolution	Analog setting: 0.1% of max frequency; Digital setting: 0.01Hz
Torque boost	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
Environment	Enclosure rating	IP 20
Temperature	–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the debate will be 5%
Humidity	5%-95%, without condensation
Altitude	≤1000m; VFD will be derated if above 1000m
Impingement and oscillation	Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
Store environment	–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

Note: ATO VFD Cannot be used as a power source, it Can only be directly connected to an induction motor to control the motor speed.

Details

Tips: Variable Frequency Drive Overvoltage
Overvoltage alarm is generally present at downtime, the main reason is that the deceleration time is too short or the braking resistor and the braking unit are problematic. For example, a 5hp VFD displays “OU” when shutdown. Before repairing the VFD, should make sure the reason for “OU” alarm is what. Here is because during the VFD deceleration, the speed of the motor rotor winding cutting the rotation magnetic field becomes fast, the rotor electromotive force and current increases, so that the motor is in power generation state. The feedback energy flows to DC part through the diode, which connects in parallel with high-power switch tube in inverting part, and finally causes by DC bus voltage increase. So, should focus on checking the brake circuit. After measuring the discharge resistance, find there’s no problem. In the measurement of the brake tube find it breakdown. Replace it and power on, even fast parking have no problem.