YASKAWA CH70B4018ABBA CH700 High Power Elevator Frequency Converter 18A 7.5kW

The YASKAWA CH70B4018ABBA CH700 High Power Elevator Frequency Converter, rated at 18A and 7.5kW, stands as a robust solution for modern elevator systems, delivering exceptional performance and reliability. This variable frequency drive (VFD) is engineered to provide precise motor control, smooth acceleration and deceleration, and significant energy savings. Key advantages include its advanced control algorithms for superior ride comfort, integrated safety features, and a compact, user-friendly design. The CH700 series is characterized by its high overload capacity, efficient heat dissipation, and compatibility with various motor types, making it a versatile choice for new installations and upgrades.

Product Specifications

| Feature                | Specification                                    |

| :--------------------- | :----------------------------------------------- |

| Model Number           | CH70B4018ABBA                                    |

| Series                 | CH700 High Power Elevator Frequency Converter    |

| Rated Current          | 18A                                              |

| Rated Power            | 7.5kW (10HP)                                     |

| Input Voltage          | 3-Phase, 380-480V AC                             |

| Output Frequency       | 0-400 Hz                                         |

| Control Method         | Sensorless Vector Control, V/f Control           |

| Braking Unit           | Integrated (standard)                            |

| Ambient Temperature    | -10°C to +50°C                                   |

| Protection Class       | IP20                                             |

| Dimensions (H x W x D) | 310mm x 220mm x 195mm                            |

| Weight                 | Approx. 9.5 kg                                   |

Core Features & Market Positioning

The YASKAWA CH700 series distinguishes itself in the competitive elevator VFD market through its state-of-the-art digital signal processor (DSP) and advanced control technologies. It offers unparalleled precision in speed and torque regulation, crucial for passenger comfort and system responsiveness. Its sensorless vector control ensures optimal performance even without encoder feedback, simplifying installation and reducing costs. The integrated braking unit provides reliable stopping power, a critical safety and performance component in elevator applications. This focus on advanced control, integrated functionality, and Yaskawa's reputation for quality positions the CH700 series as a premium, reliable choice for high-performance elevator systems.

Key Application Scenarios

The YASKAWA CH700B4018ABBA is ideally suited for a wide array of elevator applications, including passenger elevators, freight elevators, and machine-room-less (MRL) systems. Its precise control capabilities are essential for ensuring smooth, quiet operation, enhancing passenger experience in commercial buildings, residential complexes, and healthcare facilities. The drive's ability to handle frequent starts and stops, combined with its energy-saving features, makes it particularly valuable in high-traffic environments. Furthermore, its robust design and overload capacity are beneficial for traction elevators requiring substantial torque for heavy loads.

Practical System Integration Guidance

Integrating the YASKAWA CH700B4018ABBA into an elevator system involves careful wiring and parameter configuration. Ensure the power supply is stable and within the specified 3-phase, 380-480V AC range. Motor connections should follow the drive's terminal designations for U, V, and W outputs. For optimal performance, sensorless vector control parameters should be tuned to the specific motor characteristics, often involving setting motor nameplate data like rated power, voltage, current, and frequency. The drive's integrated braking unit typically requires connection to an external braking resistor, whose resistance and power rating must be selected based on the drive's duty cycle and braking requirements to prevent overheating. Safety circuits, such as overspeed governor inputs and door interlocks, must be correctly wired to the drive's safety terminals to ensure compliance with elevator safety standards.

Operation and Risk Mitigation

Operating the YASKAWA CH700B4018ABBA requires adherence to safety protocols and understanding potential fault conditions. Regular checks of the drive's cooling fan operation and ambient temperature are crucial to prevent overheating, which can lead to shutdown or component damage. Periodic inspection of wiring connections for tightness and signs of corrosion is recommended. Common troubleshooting involves addressing overcurrent, overvoltage, or undervoltage faults by verifying motor load, power supply stability, and braking resistor integrity. The drive's diagnostic display provides specific error codes (e.g., E.OC for Overcurrent, E.OV for Overvoltage) that, when cross-referenced with the user manual, guide technicians to the root cause and appropriate corrective actions, minimizing downtime and ensuring safe operation.

Scalability & Long-Term Value

The YASKAWA CH700B4018ABBA offers significant long-term value through its adaptability and Yaskawa's commitment to product longevity. Its robust construction and high-quality components contribute to a long operational lifespan, reducing the total cost of ownership. While the CH700 series itself represents advanced technology, Yaskawa's product roadmap ensures compatibility with emerging industry standards and digital integration platforms. The drive supports various communication protocols (e.g., Modbus, DeviceNet, Profibus) through optional communication cards, facilitating integration into building management systems (BMS) and Industrial Internet of Things (IIoT) frameworks for remote monitoring, diagnostics, and predictive maintenance, thereby enhancing system scalability and future-proofing investments.

Frequently Asked Questions

What is the maximum load capacity of the YASKAWA CH700B4018ABBA?

The drive's capacity is rated at 7.5kW, supporting elevator systems with motors up to this power output. This translates to reliable operation for typical passenger and freight elevators.

This rating ensures the drive can handle the dynamic loads and starting torque requirements inherent in elevator operation. It is crucial to match the motor's nameplate data precisely to the drive's specifications for optimal performance and longevity.

The 18A current rating further defines the continuous current the drive can supply to the motor, influencing the maximum motor size and torque it can effectively control under various operating conditions.

How do I reset a fault on the YASKAWA CH700B4018ABBA?

Faults can typically be reset via the drive's keypad or by cycling the main power. Specific fault codes indicate the issue.

Refer to the user manual for the exact procedure corresponding to the displayed error code. Some persistent faults may require troubleshooting before a reset is attempted.

Ensure the underlying cause of the fault has been identified and resolved to prevent recurrence and potential damage to the drive or elevator system.

Can the YASKAWA CH700B4018ABBA be used with single-phase motors?

No, this model is designed for 3-phase motor operation only. It requires a 3-phase input power supply.

Using it with a single-phase motor would lead to improper operation, potential motor damage, and system failure. Always confirm motor and supply compatibility.

The CH700B4018ABBA's internal design and control algorithms are specifically built for the characteristics of 3-phase induction motors used in elevators.

What is the recommended braking resistor for the CH700B4018ABBA?

The appropriate braking resistor depends on the application's duty cycle and braking energy. Consult the user manual for specific guidance.

Incorrect resistor selection can lead to overheating or insufficient braking force. Yaskawa provides guidelines based on regenerative energy calculations.

Using a resistor that is too low in resistance or power rating can cause it to fail, while one that is too high may reduce braking effectiveness.

How do I adjust the acceleration and deceleration times?

Acceleration and deceleration times are programmable parameters accessible via the drive's keypad. Refer to parameter group P1.

Adjust these parameters to achieve smooth and comfortable starts and stops for passengers, avoiding jerky movements. Fine-tuning is often necessary.

Ensure that rapid acceleration or deceleration does not exceed the motor's capabilities or the elevator's mechanical limits to prevent excessive stress.

What are the main advantages of the sensorless vector control?

Sensorless vector control provides precise speed and torque regulation without requiring an encoder. This simplifies installation and reduces component costs.

It offers excellent dynamic response, ensuring smooth operation even under changing load conditions, which is critical for ride quality in elevators.

This advanced control method allows the drive to accurately control the motor's performance, mimicking encoder-based systems in many applications.

How can I access the parameter settings on the CH700B4018ABBA?

Parameter settings are accessed and modified using the integrated LCD keypad. Navigate through menus using the arrow keys.

Consult the Yaskawa CH700 User Manual for a detailed explanation of each parameter and its function. Proper parameterization is vital for safe and efficient operation.

Always record any changes made to default parameters for future reference and troubleshooting purposes.

What are the typical error codes for this drive?

Common error codes include E.OC (Overcurrent), E.OV (Overvoltage), E.UV (Undervoltage), and E.OHF (Heatsink Overheating).

Each code signifies a specific operational issue that needs to be addressed. The drive's display will indicate the active error.

Refer to the manual's troubleshooting section for a comprehensive list of error codes and their recommended solutions to resolve the issue.

What is the maximum output frequency?

The CH700B4018ABBA has a maximum output frequency of 400 Hz. This allows for a wide range of motor speeds.

This high frequency capability is important for applications that require precise speed control and the ability to operate at speeds beyond standard mains frequency.

While the drive can output up to 400 Hz, the actual motor speed will also depend on motor design and the specific elevator application requirements.

Does this VFD support communication protocols for building management systems?

Yes, the CH700 series supports various communication protocols through optional communication cards. This enables integration with BMS.

This feature allows for remote monitoring, diagnostics, and control, enhancing the overall efficiency and management of the elevator system.

Integration with BMS is key for modern smart buildings, providing centralized control and data collection for optimized building operations.