Delta VFD1A7MS53ANSAA – VFD-MS300 Series AC Drive

Technical Specifications

• Brand: Delta Electronics – VFD-MS300 series.
• Model: VFD1A7MS53ANSAA (1HP, 0.75kW, 575V input).
• Power Rating: 0.75 kW / 1 HP, 575V three-phase, 1.7 A heavy-duty (HD).
• Enclosure: IP20 rated for control cabinet installation.
• Output Frequency: Programmable up to 599 Hz; supports 0–2000 Hz for high-speed applications.
• Control Modes: Volt/Hertz, Sensorless Vector, Closed Loop Vector control.
• Torque Rating: Constant Torque rated, matching VFD-B series standards.
• Output Overload: Adjustable up to 120% of nominal capacity.
• Input Flexibility: All “240/1/60” models accept three-phase input; this 575V unit operates with stable three-phase power.

I/O and Communication Features

• Digital Inputs: 11 total – 4 dedicated plus 7 programmable digital inputs.
• Analog Inputs: 3 analog inputs for precise speed and torque references.
• Outputs: 4 digital outputs, 1 analog output, and 1 dedicated digital frequency output.
• Communication: Built-in RS-485 port with Modbus RTU and ASCII protocols.
• Dynamic Braking: Built-in braking transistors for models up to 15HP, reducing external component needs.

Performance and Environmental Specifications

• Frequency Resolution: High resolution ensures accurate speed control across 0–2000 Hz range.
• Temperature Range: Operates from -10°C to 50°C with proper derating.
• Environmental Tolerance: Withstands standard industrial humidity, vibration, and dust conditions within IP20 rating.
• Noise Immunity: Built-in EMC filtering reduces interference in electrically noisy environments.
• Control Precision: Sensorless vector control delivers excellent low-speed torque and linearity.

Frequently Asked Questions

• Q: Can I use this drive with a 1HP 575V three-phase motor?
  A: Yes, the VFD1A7MS53ANSAA perfectly matches 1HP (0.75kW) 575V motors with 1.7A heavy-duty rating.
• Q: Does the VFD-MS300 support high-speed spindles?
  A: Yes, it supports output frequency up to 2000Hz for high-speed machining applications.
• Q: Do I need an external braking resistor?
  A: The drive includes a built-in braking transistor. Add an external resistor only if high braking torque is required.
• Q: What protocols does the RS-485 port support?
  A: It supports Modbus RTU and ASCII protocols for easy integration.
• Q: Which control modes are available?
  A: You can select Volt/Hertz, Sensorless Vector, or Closed Loop Vector control.

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