Delta VFD25AMS43ANSAA MS300 VFD for Continuous Operation Frequency 25A 11kW

The Delta VFD25AMS43ANSAA MS300 VFD is a powerful and versatile variable frequency drive designed for continuous operation in demanding industrial applications. This compact unit delivers robust performance, precise motor control, and enhanced energy efficiency, making it an ideal solution for a wide range of machinery and processes. With its advanced features and reliable design, the MS300 series represents a significant advancement in motor control technology, offering a compelling blend of performance, flexibility, and value.

Product Specifications

| Feature                  | Specification                                                                                                    |

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

| Model Name               | VFD25AMS43ANSAA                                                                                                  |

| Series                   | MS300                                                                                                            |

| Input Voltage            | 3-Phase AC 380V - 480V (-15% to +10%), 50/60 Hz                                                                  |

| Motor Power Range        | 11 kW / 15 HP                                                                                                    |

| Output Frequency         | 0 - 599 Hz (Standard), 0 - 1500 Hz (High Speed Models with V/f Control)                                            |

| Normal Duty Output       | 28 A                                                                                                             |

| Heavy Duty Output        | 25 A                                                                                                             |

| Overload Capacity (ND)   | 120% for 60 seconds, 150% for 3 seconds                                                                          |

| Overload Capacity (HD)   | 150% for 60 seconds, 200% for 3 seconds                                                                          |

| IP Level                 | IP20                                                                                                             |

| Control Mode             | V/F, SVC (Sensorless Vector Control)                                                                             |

| Dimensions (in)          | 5.12 x 9.84 x 7.83 (approximate, Frame Size E1)                                                                  |

| Weight                   | 8.75 Lbs (approximate)                                                                                           |

| Certifications           | UL, CE, RoHS, RCM, TUV, REACH                                                                                    |

| Communication Interface  | Built-in RS-485 (MODBUS), Optional communication cards (CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, EtherNet/IP) |

| Special Features         | Built-in PLC, Safe Torque Off (STO - SIL2/PLd), Multi-motor Control, Built-in brake choppers, High-speed pulse I/O |

| PCB Coating              | IEC 60721-3-3 class 3C2 for harsh environments                                                                   |

Core Features & Market Positioning

The Delta VFD25AMS43ANSAA MS300 series distinguishes itself in the market through its advanced sensorless vector control (SVC) technology, which provides precise motor speed and torque regulation without the need for an encoder, thereby reducing system complexity and cost. Its dual rating design (Normal Duty and Heavy Duty) offers flexibility for various application demands, ensuring optimal performance and longevity. The integrated Safe Torque Off (STO) function, compliant with SIL2/PLd safety standards, enhances operational safety during maintenance or emergencies by preventing unexpected motor restarts. Furthermore, the built-in 2K-step PLC capacity allows for simple programming needs directly within the drive, eliminating the requirement for external controllers in many applications and saving valuable cabinet space. The MS300 series also boasts a 40% reduction in size compared to previous models, facilitating side-by-side installation and optimizing space utilization in control cabinets.

Key Application Scenarios

This VFD is engineered for continuous operation across a broad spectrum of industrial applications. Its robust performance makes it suitable for driving machinery such as machine tools, textile machines, woodworking machines, and packaging machines. The precise control capabilities are also vital for pumps, fans, and air compressors, where variable speed operation leads to significant energy savings. For applications requiring high dynamic response and stability, such as rewinder machines, slitter machines, and printing machines, the MS300's high starting torque (200% at 0.5 Hz) and fast response to load impacts are critical. The inclusion of an optional Class A (C2) EMC filter further enhances its suitability for environments where electromagnetic compatibility is essential.

Practical System Integration Guidance

Integrating the Delta VFD25AMS43ANSAA MS300 into existing systems is streamlined by its user-friendly design. The drive supports a simplified wiring process with screwless terminal blocks for control wiring, speeding up installation. For programming and configuration, Delta offers the DIA Studio software suite, which includes the DIA Designer for programming and parameter configuration. The built-in USB port allows for fast data uploads and downloads, simplifying parameter backup and transfer without the need for external connectors. For external control, the VFD supports various methods, including potentiometers for analog speed control and pushbuttons for start/stop and direction control, often configured using the drive's digital inputs (MI terminals) and specific parameters for 2-wire or 3-wire control. The removable LED keypad also allows for remote operation and monitoring.

Operation and Risk Mitigation

Safe operation of the Delta VFD25AMS43ANSAA MS300 is paramount. The Safe Torque Off (STO) function is a critical safety feature that immediately removes power from the motor when activated, preventing unexpected movement during maintenance or emergency stops. Understanding common fault codes is essential for troubleshooting. For instance, an `oH3` fault indicates motor overheating, while `ot1` and `ot2` indicate over-torque conditions. Other common faults include `cF2` for EEPROM read errors and `ocA` for over-current during acceleration. A comprehensive list of fault codes and their remedies can be found in the MS300 series user manual. To mitigate risks, always ensure proper grounding, adhere to wiring specifications, and follow installation guidelines to prevent short circuits and electrical hazards.

Scalability & Long-Term Value

The Delta MS300 series offers significant long-term value through its scalability and compatibility. It supports multiple communication card options, including CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, and EtherNet/IP, enabling seamless integration into various industrial networks and IIoT platforms. This connectivity allows for advanced data monitoring, remote control, and integration into larger automation systems. Furthermore, the MS300 series parameters are designed to be compatible with Delta's VFD-C2000 series, facilitating scalability from fractional horsepower to over 800 HP drives, ensuring a consistent upgrade path for evolving industrial needs. The robust design and high-quality components, including PCB coating for harsh environments (IEC 60721-3-3 class 3C2), contribute to the drive's longevity and reliable performance.

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Frequently Asked Questions (FAQs)

Q1: What are the primary benefits of using the Delta VFD25AMS43ANSAA MS300 VFD?

A1: The MS300 VFD offers significant energy efficiency by precisely matching motor speed to load requirements, leading to cost savings. It provides advanced motor control for both induction and permanent magnet motors, ensuring optimal performance.

A2: Its compact design reduces installation space and costs, while the built-in PLC capacity simplifies system integration by reducing the need for external controllers. Safety is enhanced with the standard Safe Torque Off (STO) function.

A3: The drive supports versatile communication options, allowing easy integration into industrial networks and IIoT solutions, extending its long-term value and scalability within automated systems.

Q2: How does the Safe Torque Off (STO) feature on the MS300 VFD work?

A1: The STO function is a safety mechanism designed to prevent unexpected motor starts. When activated, it immediately removes power to the motor without needing to cycle the main power to the drive.

A2: This feature is crucial for personnel safety during maintenance, setup, or emergency situations, ensuring the motor cannot be accidentally restarted while personnel are in proximity. It meets SIL2/PLd safety standards.

A3: STO functionality requires specific wiring and integration into a safety control system. It is distinct from a complete power-off and ensures the drive remains powered for rapid restart once the safety condition is cleared.

Q3: Can the Delta MS300 VFD control both induction motors (IM) and permanent magnet motors (PM)?

A1: Yes, the Delta MS300 series is designed to support open-loop control for both induction motors (IM) and permanent magnet motors (PM). This versatility makes it adaptable to a wider range of motor types and applications.

A2: This capability enhances application flexibility, allowing users to select the most suitable motor for their needs while leveraging the advanced control features of the MS300 VFD for precise speed and torque management.

A3: The drive employs advanced control algorithms, including sensorless vector control, to optimize performance for both IM and PM motors without the need for additional feedback devices like encoders.

Q4: What are some common applications for the Delta VFD25AMS43ANSAA MS300 VFD?

A1: The MS300 VFD is well-suited for continuous operation in various industrial machinery, including machine tools, textile machines, woodworking equipment, and packaging systems.

A2: It is also highly effective for applications involving pumps, fans, and air compressors, where variable speed control leads to significant energy savings and optimized operational efficiency.

A3: Its high starting torque and fast response make it ideal for dynamic load applications such as rewinders, slitters, and printing machines that require precise and consistent performance.

Q5: How compact is the Delta MS300 series VFD, and what are the advantages of its size?

A1: The MS300 series features a compact design, with sizes reduced by up to 40% compared to previous Delta VFD models. This significantly optimizes installation space.

A2: The smaller footprint allows for side-by-side installation of multiple drives, reducing the overall cabinet size and associated costs for enclosures and mounting hardware.

A3: This space-saving advantage simplifies integration into existing control panels and allows for more equipment to be housed within a given area, enhancing manufacturing density.

Q6: Does the Delta MS300 VFD have built-in programming capabilities?

A1: Yes, the MS300 VFD includes a built-in PLC capacity with 2K steps. This allows for simple programming tasks to be performed directly within the drive.

A2: This integrated PLC functionality can eliminate the need for an external controller in many applications, simplifying wiring, reducing component count, and lowering overall system costs.

A3: Programming can be done using Delta's WPLSoft ladder diagram editing tool, similar to Delta's DVP series PLCs, making it familiar to those with experience in Delta automation products.

Q7: What communication options are available for the Delta VFD25AMS43ANSAA MS300 VFD?

A1: The MS300 series comes with a built-in RS-485 communication port supporting MODBUS protocol, providing a standard option for industrial communication.

A2: It also features an expansion slot for various optional communication cards, including CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, and EtherNet/IP, allowing seamless integration into diverse network architectures.

A3: These communication options enable advanced features like remote monitoring, parameter configuration, and data exchange with PLCs, HMIs, and IIoT platforms.

Q8: What are some common fault codes for the Delta MS300 VFD and how can they be addressed?

A1: Common fault codes include `oH3` (motor overheating), `ot1`/`ot2` (over torque), and `ocA` (over-current during acceleration). These typically indicate issues with the motor, load, or drive parameters.

A2: For `oH3`, verify motor cooling and ensure the motor is appropriately sized for the load. For over-torque or over-current faults, check for excessive load, incorrect acceleration/deceleration times, or motor issues.

A3: Other faults like `cF2` (EEPROM error) suggest internal drive issues. Always refer to the MS300 series user manual for a comprehensive list of fault codes, their specific causes, and recommended troubleshooting steps.

Q9: Can the Delta MS300 VFD be used in harsh environmental conditions?

A1: Yes, the MS300 series is designed with a new PCB coating (IEC 60721-3-3 class 3C2) and a thermal design suitable for harsh environment applications, enhancing its durability.

A2: This enhanced protection against dust, humidity, and corrosive elements makes it more reliable in demanding industrial settings compared to drives without such protective measures.

A3: While designed for harsh environments, proper enclosure and ventilation according to the IP rating (typically IP20 for standard models) are still crucial for optimal performance and longevity.

Q10: What is the typical output frequency range for the Delta VFD25AMS43ANSAA MS300 VFD?

A1: Standard models of the MS300 series offer an output frequency range of 0 to 599 Hz. This covers a wide array of industrial motor speed requirements.

A2: High-speed models within the MS300 series can achieve an output frequency of up to 1500 Hz when operating in V/f control mode, making them suitable for high-speed spindle applications.

A3: The precise output frequency is controlled by the drive's parameters, which can be set to match the motor's nameplate specifications and the application's operational demands.