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Original INVT Variable Frequency Drive High-performance 22KW INVT inverter GD300-21-015G-4
GD300-21 series air compressor dual frequency conversion all-in-one machine is a special dual frequency conversion all-in-one machine designed and developed by INVT for synchronous or asynchronous twin-screw air compressors. It can be used with INVT's HMI touch screen to perfectly realize the drive and management of twin-screw air compressors. GD300-21 air compressor all-in-one machine can provide air compressors with dual frequency conversion outputs for the host and fan, provide +24V power to the touch screen, control the solenoid valve, and receive temperature and pressure signals. It completely replaces the original air compressor dual frequency conversion electrical control cabinet in terms of function. However, compared with the previous electrical control cabinet, the volume of the all-in-one machine is greatly reduced, and installation and debugging have become easier.
Power range:
Three-phase 220V (-15%) ~ 240V (+10%) 7.5~45KW
Three-phase 380V (-15%) ~ 440V (+10%) 15~90KW
Product feature
1. Dual frequency conversion drive and control in one
The main engine and oil temperature fan are dual frequency conversion drive and control in one, which makes the control more intelligent and the air compressor more energy-saving and efficient.
2. Dual-stage dual-drive control
The integrated unique dual-drive constant pressure control algorithm makes the dual-stage dual-drive air compressor always run in the best operating state.
3. Integrated integrated design
The functions and configurations are highly integrated, which reduces the customer's electrical cabinet assembly time by 80%, greatly reducing the customer's product material cost and manufacturing costs.
4. Stable and reliable
Design, testing and production are strictly carried out in accordance with IEC international standards to ensure the reliable operation of the product in various harsh environments.
5. Smart Internet of Things cloud platform
The optional 4G Internet of Things data terminal can be connected to the air compressor dedicated Internet of Things cloud platform to realize real-time detection of operating status, maintenance reminders, fault alarms and intelligent analysis, remote maintenance, intelligent management of equipment operating status, equipment energy efficiency data analysis and other functions; in addition, it supports customized deployment of private cloud platforms, with diversified choices and good data confidentiality.
Technical parameters
| Category | Function | Specifications |
| Power input | Inverter input voltage (V) | Three-phase 220V (-15%) ~ 240V (+10%) Rated voltage: 220V |
| Three-phase 380V (-15%) ~ 440V (+10%) Rated voltage: 380V | ||
| Three-phase 520V (-15%) ~ 690V (+10%) Rated voltage: 660V | ||
| Rated input current(A) | See Product Ratings | |
| Rated input frequency (Hz) | 50Hz or 60Hz, the allowed range is 47~63Hz | |
| Efficiency | >97% | |
| Power Output | Output voltage(V) | Equal to input voltage, error less than 5% |
| Rated output current(A) | See Product Ratings | |
| Rated output power (kW) | See Product Ratings | |
| Output frequency (Hz) | 0~400Hz | |
| Low voltage DC power output | 24 VDC power supply | 24W(Rated 24V/1A) |
| Operation control performance | Control method | Open loop vector, space voltage vector |
| Speed ratio | Asynchronous machine 1:200 (SVC), synchronous machine 1:200 (SVC) | |
| Speed control accuracy | ±0.2% (SVC) | |
| Speed Fluctuation | ±0.3% (SVC) | |
| Torque response | <20ms (SVC) | |
| Starting torque | Asynchronous motor 0.25Hz 150% (SVC) | |
| Synchronous machine 2.5Hz 150% (SVC) | ||
| Frequency setting method | PID control setting, MODBUS communication setting, P1- and P2-analog input setting, keyboard digital setting | |
| Overload capacity | 150% rated current overload for 1 minute | |
| Pressure analog input | Standard 1 channel:P1+/P1- | |
| Optional 1 way:P2+/P2- | ||
| 4~20mA/0~1.6MPa enter | ||
| Temperature analog input | Standard 1 channel:PTA1/PTB1 | |
| Optional 1 way:PTA2/PTB2 | ||
| Resolution 1ºC, range -20ºC~150ºC, accuracy error: 3ºC | ||
| Analog output | Standard 1 channel:AO1/GND | |
| 0~10V/0~20mA | ||
| Digital input | Standard 3-way:S1,S2,S3 | |
| Optional 5-way:S4,S5,S6,S7,S8 | ||
| Common terminal:COM | ||
| Maximum frequency 1kHz | ||
| Digital output | Standard 2-way:RO1A/RO1C ,RO2A/RO2B/RO2C | |
| Optional 4-way:RO3A,RO4A ,RO5A,RO6A,ROC | ||
| Contact capacity:3A/AC250V,1A/DC30V | ||
| Communications 485 | Standard 1 channel:485+/485- | |
| Shielding grounding PE/CGND | ||
| Other | Installation | Wall mounting, flange mounting |
| Operating temperature | 10~50ºC, derate when the temperature is above 40ºC, derate by 1% for every 1ºC rise | |
| Protection level | IP20 | |
| Pollution degree | Level 2 | |
| Cooling method | Forced air cooling | |
| DC Reactor | 7.5~11kW built-in optional, 15~110kW built-in standard, 132~315kW external optional | |
| EMC filters | The built-in standard C3 filter is disabled by factory default; if you need to enable it, you can manually insert the jumper cap at the socket position marked as J10. | |
| External optional filter: meets IEC61800-3 C2 level requirements |
1.Packing Details: Plywood crate pallet plus foam board and bubble film, Full closed wooden case. 1pcs/each package (for stationary screw air compressor)
2.Shipping method: by sea, by LCL/FCL or as requested
3.Delivery method: FOB, CFR, CIF and EXW etc.
4.Delivery time: in 7-15 days after receiving deposit (customized machines not included)
Shanghai Rocky Machinery Co., Ltd. was established in 2003 and has 18 years of experience in the air compressor industry. It is an innovative enterprise integrating production, trade, service, research and development.
We are professional gas compressors manufacturer since 2003, Germany standard, more than 100 workers, annual sales exceeding 20 million US dollars with 13 years of exporting experience, strict quality control and delivery on time. We not only supply gas compressor including screw air compressor, but also supply spares parts and after-treat machines.
Our main products series as follows.
2. Dry Oil-free Screw air compressor
3. Oil-free water lubricated screw air compressor
4. Oil-free scroll air compressor
5. Oil-free/Oil-lubricated piston compressor
6. Mobile Screw air compressor( Motor driven/ Diesel engine driven)
7. Oxygen/Nitrogen generators/boosters
8. High Pressure Breathing Air Compressor
9. Refrigerant air dryer/ Desiccant air dryer
10. Precision line filter/ water separator
Rocky will continue to promote technological innovation and progress in line with the mission of "innovation reflects value", and achieve win-win results with global partners, suppliers and employees. Create a new world of "energy saving, envir-onmental protection and intelligence" in the field of air compressors.
Q1. Are you trading company or manufacture ?
A: We are professional manufacture of screw air compressor of Taicang,Jiangsu,China. More than 18 years of experience in air compressor manufacturing.
Q2. How long is the delivery time ?
A: For standard voltage ,15 working days. Non-standard ,please contact our sales.
Q3. What's payment term ?
A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
Q4. How about your after-sales service ?
A: 1.Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service.
3.Worldwide agents and after service avaiable.arrange our engineers to help you training and installation.
Q5. How about your warranty?
A: One year for the whole machine and two years for screw air end, except consumable spare parts.
Q6. Do you have any certificate ?
A: Yes, per different customer's market need ,we can offer CE ,ISO etc certificate.
Q7. What about the maintenance ?
A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q8. How do you control quality ?
A: 1. The raw materials are strictly inspected
2. Some key parts are imported from overseas
3. Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
Q9. Do you offer OEM service ?
A: Yes.Both OEM & ODM service can be accepted.
Q10.How long could your air compressor be used?
A: Generally, more than 10 years.
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