Delta VFD2A7MS43PNSAA MS300 VFD | 0.75kW 3-Phase 380-480V

Delta VFD2A7MS43PNSAA MS300 Series AC Micro Drive

Product Overview

The VFD2A7MS43PNSAA is a high-performance, compact vector control drive from Delta’s premier MS300 series. Designed for both IM and PM motor control, this 0.75 kW (1 HP) variable frequency drive is engineered to optimize space and efficiency in industrial automation. Featuring an IP20 protection plate and supporting a wide input voltage range of 380V to 480V AC, it is the ideal solution for machine tools, textile machinery, and woodworking applications. Its derivative model, the VFD2A7MS43PNSART, shares the same core high-speed processing capabilities and robust reliability standards.

Core Technical Advantages

This MS300 series drive delivers a rated output current of 2.7A and an apparent output power of 2.1 kVA. It excels in energy management with a remarkably low standby loss of only 5W. The drive’s thermal design is optimized for precision, maintaining full functionality at a maximum operating temperature of 50 °C. With a 400V class power rating, it supports 50/60 Hz supply frequencies and features advanced power loss management; even at 90% frequency and 100% current, the relative power loss remains as low as 2.64%, ensuring maximum energy savings for the end-user.

Technical Specifications

Efficiency & Loss Data

The MS300 series is built for superior efficiency. Below is the power loss performance for the 0.75kW model:

• 90% Freq / 100% Current: 55.5 W (2.64% Relative Loss)
• 50% Freq / 100% Current: 53.6 W (2.55% Relative Loss)
• 0% Freq / 50% Current: 45.2 W (2.15% Relative Loss)
• Standby Power Consumption: 5 W

Installation & Engineering Guide

When installing the VFD, ensure the mounting surface is capable of supporting the drive's approximate weight of 1.1 kg. To maintain the IP20 rating and ensure proper cooling, follow the prescribed clearance distances within the control cabinet. The drive supports a wide variety of communication protocols and features a built-in USB port for fast parameter copying and firmware updates. Ensure that field wiring follows local electrical codes for 480V systems, and utilize shielded motor cables to minimize electromagnetic interference (EMI) in sensitive environments.

Engineering Advantages

The Delta MS300 series provides one of the most compact footprints in the industry without compromising on torque performance. By utilizing the VFD2A7MS43PNSAA, engineers can achieve significant cabinet space reduction. The drive includes a safe torque off (STO) function as standard, enhancing system safety levels to SIL2/PLd. Its versatility in handling different motor types and its robust performance at a maximum operating temperature of 50 °C make it a future-proof choice for global machine manufacturers seeking reliable and cost-effective motor control solutions.

Technical FAQs

Q1: What is the difference between the "AA" and "RT" derivative models?
A1: The derivative models typically share identical electrical ratings, but may differ in factory default settings or regional hardware versions. Always verify the specific instruction manual for the 'RT' suffix variations.

Q2: Can I run this drive at 60 Hz?
A2: Yes, the drive is designed for both 50 Hz and 60 Hz supply frequencies, and can output frequencies far beyond these for high-speed applications.

Q3: Is an external cooling fan required?
A3: The drive is designed to operate up to 50 °C. For high-density cabinet installations, ensure adequate airflow is maintained; the internal fan is sufficient for most standard operating conditions.