1. Introduktion
This manual provides essential information for the safe and efficient operation of your Tbest AT2-1500X Variable Frequency Drive (VFD) speed controller. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper use and prevent potential hazards.
The Tbest AT2-1500X VFD is designed for controlling the speed of single-phase AC motors up to 1.5 kW. It features a unique control method for high torque, precision, and a wide speed regulation range. Its robust design offers good anti-trip performance and adaptability to various environmental conditions, including power fluctuations, temperature, humidity, and dust interference. The VFD incorporates optimized PWM control technology and electromagnetic compatibility for low noise and reduced electromagnetic interference.
2. Sikkerhedsforanstaltninger
ADVARSEL: Failure to follow these safety instructions may result in death, severe injury, or serious damage to the inverter.
- Always ensure the power supply is disconnected before performing any wiring or maintenance on the VFD.
- Do not touch the VFD terminals when power is applied, as this can cause severe damage to the inverter.
- Do not install the VFD in environments with flammable materials to avoid fire hazards.
- The ground terminal of the inverter must be properly and securely grounded.
- Avoid installing the VFD in environments with explosive gases to prevent explosion hazards.
- Only qualified personnel should perform internal inspections or repairs of the VFD. Incorrect procedures can lead to damage or injury.

Figur 1: Forside view of the VFD showing the control panel and safety warning label.
3. Produktfunktioner
- Høj ydeevne: Utilizes a unique control method to achieve high torque, high precision, and a wide speed regulation range.
- Forbedret stabilitet: Features good anti-trip performance and adaptability to power fluctuations, temperature, humidity, and dust interference.
- Low Noise & EMI: Optimized PWM control technology and electromagnetic compatibility minimize operational noise and electromagnetic interference.
- User-Friendly Wiring: Easy to use and connect with screw terminals for convenient wiring.
- Effektiv varmeafledning: Designed with a large heat sink to ensure effective heat dissipation and prolonged operational life.
4. Specifikationer
| Parameter | Værdi |
|---|---|
| Model | AT2-1500X |
| Anvendelsesområde | Universel |
| Effektfase | Enkeltfase |
| Nominel strøm | 8 A |
| Nominel voltage | AC 220 V (Single Phase) |
| Forsyning Voltage | Lav voltage |
| Suitable Motor Power | 1.5 kW |
| Filter | Ingen |
| DC Power Source Type | Nuværende type |
| Kontrolmetode | V/F Open-Loop Control |
| Justerbar udgang Voltage Metode | PWM-kontrol |
| Dimensioner (ca.) | 12.5 x 12.5 x 18 cm |
| Product Reference Number | Tbesth8d7koib43 |

Figur 2: Bagside view of the VFD, highlighting cooling and terminal access.

Figur 3: Nederst view of the VFD, illustrating the heat sink design for efficient cooling.
5. Opsætning og installation
Proper installation is crucial for the safe and reliable operation of the VFD. Ensure all safety precautions are followed before proceeding.
5.1 Montering
- Mount the VFD in a clean, dry, and well-ventilated area, away from direct sunlight, excessive heat, moisture, and dust.
- Ensure sufficient clearance around the VFD for proper airflow, especially around the heat sink and cooling fans.
- Avoid mounting on flammable surfaces.
5.2 Ledningsføring
All wiring must be performed by a qualified electrician and in accordance with local electrical codes.
- Strømforbrug (L, N): Connect the single-phase AC 220V power supply to the 'L' and 'N' terminals.
- Motoreffekt (U, V, W): Connect the single-phase AC motor to the 'U', 'V', and 'W' terminals. For single-phase motors, typically two of these terminals are used, or specific wiring instructions for your motor should be followed.
- Jord (GND): Tilslut jordterminalen til en pålidelig jordforbindelse. Dette er afgørende for sikkerheden.
- Kontrolterminaler: The VFD includes additional control terminals for external control signals (e.g., start/stop, speed reference). Refer to the detailed wiring diagram for specific connections.

Figur 4: Detaljeret view of the VFD's screw terminals for electrical connections.

Figur 5: Overview of the VFD with a focus on the control panel and wiring interface.
6. Betjeningsvejledning
The VFD features an intuitive control panel for easy operation.

Figure 6: Control panel of the Tbest AT2-1500X VFD.
6.1 Kontrolpanel overview
- Vise: Shows operational parameters such as frequency, current, voltage, og hastighed.
- DISP-knap: Cycles through different display parameters.
- FWD/REV Buttons: Controls the forward and reverse direction of the motor.
- PROG knap: Enters programming mode to adjust VFD parameters.
- FUNC/DATA-knap: Used to select functions or confirm data entry in programming mode.
- Op/ned pileknapper: Adjusts parameter values or navigates through menus.
- Drejeknap: Provides fine adjustment for speed or parameter values.
- RUN Button (Green): Starter motoren.
- STOP/RESET Button (Red): Stops the motor or resets fault conditions.
6.2 Grundlæggende betjening
- Tænd: Ensure all wiring is correct and secure, then apply power to the VFD. The display will illuminate.
- Indstil frekvens/hastighed: Use the Up/Down arrow buttons or the rotary knob to set the desired output frequency (and thus motor speed). The display will show the current frequency.
- Startmotor: Tryk på LØBE button to start the motor. The VFD will accelerate the motor to the set frequency.
- Skift retning: If configured, use the FWD/REV buttons to change the motor's rotation direction.
- Stop motoren: Tryk på STOP/NULSTIL button to stop the motor. The VFD will decelerate the motor to a stop.
- Parameterjustering: For advanced settings, press the PROG button to enter programming mode. Use the arrow buttons and FUNC/DATA button to navigate and modify parameters. Refer to the full programming manual (if available) for detailed parameter descriptions.
7. Vedligeholdelse
Regelmæssig vedligeholdelse sikrer din VFD's levetid og optimale ydeevne.
- Rensning: Periodically clean the VFD's exterior, especially the ventilation openings and heat sink fins, to prevent dust accumulation. Use a soft, dry cloth. Do not use liquid cleaners.
- Ventilator inspektion: Check the cooling fans for proper operation and ensure they are free from obstructions. Replace noisy or malfunctioning fans.
- Terminaltjek: Annually, inspect all wiring terminals for tightness and signs of corrosion or overheating. Retighten connections as necessary (ensure power is off).
- Miljøforhold: Sørg for, at driftsmiljøet forbliver inden for de angivne temperatur- og luftfugtighedsområder.
8. Fejlfinding
Dette afsnit indeholder generel vejledning til almindelige problemer. Kontakt teknisk support ved komplekse problemer.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Motor starter ikke | No power, incorrect wiring, STOP/RESET button pressed, parameter error. | Check power supply. Verify wiring connections. Press RUN. Check VFD parameters. |
| Motoren kører med forkert hastighed | Incorrect frequency setting, motor parameters not matched. | Adjust frequency using rotary knob/arrow buttons. Verify motor parameters in VFD settings. |
| VFD displays an error code | Overstrøm, overvoltage, undervoltage, overheat, motor overload. | Note the error code. Press STOP/RESET. Consult the full VFD manual for specific error code meanings and solutions. Check motor load and power supply. |
| Overdreven støj eller vibrationer | Motor imbalance, mechanical issue, VFD parameter mismatch. | Inspect motor and mechanical connections. Review VFD motor parameters. |
9. Garanti og support
Specific warranty information for the Tbest AT2-1500X VFD is not provided in this manual. For details regarding warranty coverage, technical support, or service, please contact your retailer or the manufacturer directly. Ensure you have your product model number (AT2-1500X) and any purchase documentation available when seeking support.