900G Series Variable Frequency Drive

Compared to smaller or single-function frequency converters, the 900G Series Variable Frequency Drive excels in industrial environment adaptability and control performance:

Full Power Range Coverage for Heavy-Duty Scenarios: Offers various form factors from A00 to A12, covering power outputs from 0.75KW to 630KW. Specifically designed for industrial equipment requiring strong power output, it solves the problems of high starting current and difficult control of high-power motors.

Vector Control for High Torque at Low Speeds: Supports SVC with a speed ratio up to 1:100, providing 150% of rated torque even at 0.5Hz, ensuring smooth and shock-free heavy-duty starts.

Multi-Pump Control for System Integration: Built-in advanced water supply logic supports a 1-to-5 multi-pump control mode, directly driving complex constant-pressure water supply systems without the need for an additional PLC controller.

Multi-Pump Control for System Integration: Built-in advanced water supply logic supports a 1-to-5 multi-pump control mode, directly driving complex constant-pressure water supply systems without the need for an additional PLC controller.

Industrial-grade protection and heat dissipation: The 900G Series Variable Frequency Drive adopts an independent air duct design and IP20 protection rating, effectively resisting dust intrusion in industrial environments. Combined with an intelligent temperature-controlled fan, it ensures stable operation over extended periods.

Full-port communication and intelligent networking: Standard configuration includes the Modbus-RTU communication protocol and supports an RS485 interface, allowing easy integration with host computer monitoring systems for real-time data exchange in factory automation.

Product Technical Parameters

Application Industries and Scenarios

The 900G Series Variable Frequency Drive, with its high power density and broad application logic, is widely used in the following fields:

Power and Municipal: High-power constant pressure water supply pump stations, sewage treatment systems, induced draft fans.

Machinery Manufacturing: CNC machine tool spindle drives, injection molding machines, extruders, packaging machinery.

HVAC: Central air conditioning circulating water pumps, cooling tower fans, HVAC systems.

Energy and Mining: Mine hoist auxiliary drives, belt conveyors, compressors.

Installation and Usage Instructions

1. Mechanical Installation

Vertical Installation: Must be installed vertically on a flat metal surface, ensuring unobstructed airflow for heat dissipation.

Heat Dissipation Space: Sufficient space must be provided vertically above and below (A≥10mm, B≥200mm for 0.75-22KW). Blocking the air inlet is strictly prohibited.

Environmental Requirements: Ambient temperature must be between -10°C and +40°C (derating is required above 40°C). Derating is required for altitudes exceeding 1000 meters.

2. Electrical Connections

Main Circuit: R/S/T connect to three-phase power supply, U/V/W connect to the motor. Reversing connections is strictly prohibited!

Braking Unit: 0.75KW~5.5KW has a built-in braking unit and requires an external braking resistor (connected to the +/PB terminal); 7.5KW and above require an external braking unit.

Grounding: The PE terminal must be reliably grounded, and the grounding resistance must comply with local regulations.

3. Quick Debugging Procedure

1). Parameter Reset: Set F0-24 = 1 to restore factory settings.

2). Motor Parameters: Set F8-00 (Power) to F8-04 (Speed) according to the nameplate.

3). Parameter Identification: Set F8-07 to perform static or dynamic identification (required for vector control to obtain optimal torque).

4). Operation Control: Set F0-00 to select the operation channel (0: Panel, 1: Terminal, 2: Communication).

5). Frequency Setpoint: Set F0-01 to select the frequency source.

FAQ

Q1: What is the difference between the 900G Series Variable Frequency Drive and the previous mini model (900M)?

A: The TES 900G is a general-purpose inverter with a wider power range (up to 630KW), richer I/O ports (5 DI channels, 2 AI channels), and powerful vector control performance, making it suitable for complex industrial control scenarios. The 900M mini model, on the other hand, is typically designed for simple low-power (<2.2KW) applications and has fewer ports.

Q2: Does the 900G Series Variable Frequency Drive support multi-pump water supply control?

A: Yes. The 900G series has built-in comprehensive PID logic. By setting parameters F0-26 and F5, it can achieve 1-to-5 multi-pump control, including various modes such as "one in use, one standby," "master-slave control," and "synchronous control," allowing complex water supply systems to be built without an external controller.

Q3: What is SVC control? Why is parameter identification necessary?

A: SVC (Speed Sensorless Vector Control) allows the inverter to precisely control the motor torque even without an encoder. Motor parameter identification (F8-07) allows the inverter to "learn" the motor's internal parameters (such as resistance and inductance), thereby achieving low-frequency, high-torque output (0.5Hz/150%). Without identification, the inverter will only operate in normal V/F mode, reducing its heavy-load capacity.

Q4: What should I do if the panel displays "Err14" indicating the module is overheating?

A: "Err14" indicates the inverter module temperature is too high. Please check: 1. Is the load too heavy or has it been locked for a long time? 2. Is the cooling fan damaged or is the air duct blocked by dust? 3. Is the ambient temperature above 40°C (requires derating or improved ventilation)? 4. Is the carrier frequency F0-13 set too high (the carrier frequency can be appropriately reduced to decrease heat generation)?

Q5: How to extend the lifespan of the inverter in harsh environments?

A: It is recommended to clean the dust from the cooling fan and air duct regularly (every 6-12 months); in high dust environments (pollution level > 2), the frequency converter should be installed in a protective cabinet with an IP54 rating or higher; if stored for a long period (more than 1 year), pre-charge aging treatment should be performed according to the instruction manual before use.