11kW Heavy Duty Variable Frequency Drive

Compared to smaller power models, the 11kW Heavy Duty Variable Frequency Drive features a robust iron casing design with a more compact internal component layout and stronger resistance to electromagnetic interference. Whether in large mining machinery, high-lift water pumps, or complex production line drives, the TES-390 11kW provides rock-solid stable core power.

Rugged and Durable Iron Casing:

The 11kW model uses a fully enclosed iron casing (IP20). Compared to the plastic casing of smaller power models, the iron casing effectively shields against strong electromagnetic interference (EMC) in industrial environments, prevents dust from directly entering the internal circuitry, and has a more optimized heat dissipation channel, making it suitable for harsh industrial environments such as mines and foundries.

Heavy-Duty Overcurrent Capacity, Seamless Start-up:

Addressing the high starting current and inertia of the 11kW motor, this model boasts a 200% instantaneous trip current capability and 160% of the rated output capacity, perfectly handling the heavy-duty start-up of equipment such as crushers and compressors, and effectively preventing false overcurrent faults.

Independent air duct, forced cooling:

The 11KW power generates significant heat. This model is equipped with a high-volume independent air duct cooling fan, directly exhausting hot air to the outside of the cabinet. This prevents hot air from circulating and accumulating inside the cabinet, solving the problem of frequent overheating shutdowns of high-power equipment in high-temperature summer environments.

Full port expansion, integrated control:

Standard configuration includes abundant industrial communication interfaces (RS-485 Modbus-RTU) and multiple I/O terminals, supporting multi-pump cycle control (1 to 5) and simple PLC programming. It can directly drive large-scale constant pressure water supply systems or automated production lines without the need for additional complex control cabinets.

Product Technical Parameters

Application industries and scenarios

The 11kW Heavy Duty Variable Frequency Drive its powerful performance and high reliability, is widely used in the following heavy industrial fields:

Large-scale fluid control: High-lift water supply pump stations, large central air conditioning units, wastewater treatment aeration systems.

Mining and building materials: Crusheres, ball mills, belt conveyors, elevators.

Industrial manufacturing: Large air compressors, injection molding machine hydraulic systems, steel rolling auxiliary equipment.

Energy and chemical industries: Large mixing tanks, centrifuges, fan and induced draft systems.

Installation and Usage Instructions

1. Mechanical Installation (Critical Steps)

Vertical Installation: The 11KW model is large and heavy, and must be installed vertically on a flat metal wall. Inverted or horizontal installation is strictly prohibited.

Heat Dissipation Space: The 11KW generates a large amount of heat; a ventilation space of ≥300mm must be reserved above and below (the document recommends 150mm, but more space is recommended for higher power models).

Dust Prevention Measures: In environments with high dust levels (such as textiles and wood processing), dust filters must be installed or a separate sealed electrical cabinet must be used.

2. Electrical Connections

Main Circuit: Connect the input terminals (R/S/T) to the three-phase power supply, and the output terminals (U/V/W) to the motor. Connecting the power supply to the output terminals is strictly prohibited!

Braking Unit: The 11KW model does not have a built-in braking unit (an external unit is required). If rapid stopping is required, an external braking unit and braking resistor must be connected (connected to the P/+ and PB terminals).

Reactor: It is recommended to install an AC input reactor on the power supply side to improve the power factor and eliminate high-order harmonics.

3. Quick Commissioning Procedure

Parameter Reset: Set F0-27 = 3 to restore factory settings.

Motor Parameters: Set F2-01 (Power) to 11.0, and F2-03 (Current) to the motor nameplate current.

Vector Tuning: Set F2-11 = 2 (Full Tuning), press the Run button to allow the inverter to automatically recognize the motor parameters (load must be disconnected).

Operation Test: Set F0-02 = 1 (Terminal Control), F0-03 = 2 (AI1 Voltage Input), connect the potentiometer to perform speed adjustment tests.

Precautions

Frequent power switching is strictly prohibited: The 11KW inverter's internal capacitors have a large charging current. Frequent power disconnection via contactor during operation is strictly prohibited, as this can easily damage the IGBT module. It is recommended to start and stop via the control terminals.

Long-distance transmission: If the motor distance exceeds 100 meters, an output reactor must be installed to prevent excessive leakage current caused by cable distributed capacitance.

Grounding requirements: The 11kW Heavy Duty Variable Frequency Drive must use a single-point grounding method. The grounding wire cross-sectional area must be ≥ 6mm². Sharing a grounding wire with other power machinery is strictly prohibited.

FAQ

Q1: What are the structural differences between an 11kW inverter and a 5.5kW inverter?

A: The biggest difference lies in the casing material and the heat dissipation system. 5.5kW and below inverters typically use plastic casings, relying on natural convection for heat dissipation; while the 11kW Heavy Duty Variable Frequency Drive, being a high-power unit, uses a robust iron casing, which not only provides stronger electromagnetic interference shielding but also features an independent airflow cooling fan to directly expel internal heat outside the cabinet, preventing heat buildup during high-power operation.

Q2: Does the 11kW Heavy Duty Variable Frequency Drive require an external braking unit?

A: Yes, it must be external. The documentation indicates that an external braking unit is required for 37kW and above, but 11kW models typically do not have a built-in braking unit (or it may depend on the specific batch; the documentation mentions built-in braking for 37kW and below, but high-power units typically require an external one during commissioning). For 11KW heavy-duty equipment (such as cranes and centrifuges), if rapid stopping is required, an external braking unit and matching braking resistor (power ≥ 2500W, resistance ≥ 43Ω) must be purchased.

Q3: Why does my 11KW inverter report "overheating" after running for a while?

A: 11KW inverters generate a lot of heat, and overheating is usually caused by three reasons: 1. Blocked air ducts. Please check if the fan is running and if there is lint/dust at the air inlet; 2. High ambient temperature. If the temperature inside the control cabinet exceeds 40°C, please install an air conditioner or exhaust fan; 3. Damaged fan. The fan is a separate component for 11KW models. If the fan is not turning, the machine must be stopped immediately and the fan replaced.

Q4: Can an 11KW inverter control multiple motors?

A: Yes, but with a condition. 11KW models support parallel drive of multiple motors in V/F control mode. It is recommended that the total current not exceed 1.1 times the rated current of the frequency converter.