VFD4A8MS21ANSAA Delta AC Drive MS300 Series

VFD4A8MS21ANSAA Delta MS300 Compact Vector Control Drive

Product Introduction

The Delta VFD4A8MS21ANSAA belongs to the MS300 series, Delta's next-generation compact vector control drive lineup. This model accepts a single-phase input voltage of 230V AC and delivers a motor power rating of 1 HP (0.75 kW). A dual rating design gives it 4.8 A for heavy-duty applications and 5.0 A for normal-duty operation. The drive supports a maximum output frequency of 599 Hz, making it suitable for high-speed motor control in many industrial settings. Moreover, its compact size reduces cabinet space by up to 40% compared to previous generations.

Technical Specifications

This section covers the core technical parameters of the VFD4A8MS21ANSAA drive. The input voltage is rated at 230V AC with single-phase configuration. Its heavy-duty output current reaches 4.8 A, while the normal-duty output goes up to 5.0 A. For heavy-duty conditions, the drive delivers 150% overload capacity for 60 seconds and 200% for 3 seconds. For normal-duty operation, it offers 120% overload for 60 seconds and 150% for 3 seconds.

The motor control method supports both induction motors (IM) and permanent magnet motors (PM) in open-loop vector control mode. Additionally, the Delta VFD4A8MS21ANSAA includes a built-in PLC with 2K steps capacity for simple programming tasks. A built-in brake chopper enhances the braking system's deceleration capability. Users can operate the drive remotely via the removable 5-digit LED keypad, and the USB port enables fast parameter uploads and downloads.

Communication and Connectivity

The VFD4A8MS21ANSAA provides many communication options for easy integration into automation networks. Standard built-in RS-485 (Modbus) comes with the unit. A communication slot also accepts various optional cards, including CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, EtherNet/IP, EtherCAT, and PROFINET. The drive includes one high-speed pulse input terminal (MI7) with speeds up to 33 kHz and one high-speed pulse output terminal (DFM) with the same capability.

This MS300 series drive also supports multi-motor control with built-in parameters for four induction motors. Safe Torque Off (STO) functionality comes standard, complying with SIL2/PLd safety standards. A new PCB coating conforms to IEC 60721-3-3 class 3C2, which ensures reliable operation even in harsh environments with high humidity or corrosive gases.

Mechanical and Environmental Parameters

Physical dimensions play a vital role in system integration. The VFD4A8MS21ANSAA has a compact footprint of 2.83 inches (W) x 5.59 inches (H) x 5.63 inches (D). Its frame size is "B2" and it carries an IP20 enclosure rating, making it suitable for control cabinet installation. This unit weighs approximately 1.8 lbs (0.82 kg).

The drive operates reliably in ambient temperatures from -20°C to +60°C. For optimal performance, keep the operating temperature below 50°C during continuous duty. Storage temperature can range from -20°C to +70°C. Relative humidity should stay below 90% (non-condensing). Furthermore, vibration resistance is rated at 1G for frequencies under 60Hz, which ensures stable performance in industrial environments.

Installation Guidelines

Proper installation of the Delta VFD4A8MS21ANSAA requires attention to mounting and wiring practices. First, mount the drive vertically on a flat, non-combustible surface using the designated mounting holes. Ensure sufficient clearance—at least 50mm on both sides and 100mm above and below—for proper heat dissipation.

For wiring, connect the single-phase input power to terminals R and S. The motor leads should go to terminals U, V, and W. Always ground the unit properly using the designated grounding terminal. You can install an optional Class A (C2) EMC filter to meet electromagnetic compatibility requirements. After wiring, use the removable keypad or USB connection to configure motor parameters before starting the drive for the first time.

Packaging List

The package for the VFD4A8MS21ANSAA includes:

• Delta MS300 series AC drive unit (1 pc)

• Removable 5-digit LED keypad (attached)

• Quick start guide and user manual

• Mounting screws and washers (set)

• Terminal covers for unused connections

• Cable tie clips for wiring management

Note: Cables, motors, communication cards, and external braking resistors do not come with the package.

Shipping Information

We ship all orders for the Delta VFD4A8MS21ANSAA via international express carriers. We primarily use FedEx, UPS, and DHL for fast and reliable delivery. Once we dispatch the shipment, we will provide tracking numbers. Standard delivery usually takes 3-5 business days, depending on your location. Expedited shipping options are also available for urgent projects.

Frequently Asked Questions (FAQ)

Q1: What is the input voltage requirement for the VFD4A8MS21ANSAA?
A1: The Delta VFD4A8MS21ANSAA requires a single-phase input voltage of 230V AC. It works with 200-240V AC systems and does not support three-phase power sources.

Q2: Can this MS300 drive control both induction and permanent magnet motors?
A2: Yes, the VFD4A8MS21ANSAA supports both induction motors (IM) and permanent magnet motors (PM) via its open-loop vector control capability, giving you application flexibility.

Q3: Does the Delta VFD4A8MS21ANSAA include an EMC filter?
A3: The EMC filter is optional for this model. The drive supports an optional built-in Class A (C2) standard EMC filter for 230V models. Please specify this feature when ordering if you need it.

Q4: What communication protocols does this drive support?
A4: The VFD4A8MS21ANSAA includes built-in RS-485 (Modbus). Optional communication cards support CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, EtherNet/IP, EtherCAT, and PROFINET.

Q5: What is the difference between heavy-duty and normal-duty ratings?
A5: Heavy-duty rating provides 150% current for 60 seconds and 200% for 3 seconds, which suits demanding loads. Normal-duty rating offers 120% for 60 seconds and 150% for 3 seconds, which works best for standard applications.