VF Drive Solutions

At PLC Hardware, we not only offer access to top-tier Variable Frequency Drive (VFD) solutions from leading manufacturers, but we also provide some of the most competitive pricing in the industrial automation market. Our major lines, including Rockwell, Siemens, and Schneider, often see price reductions of up to 50%. Additionally, some low kW drives boast discounts of up to 65% compared to other supplier list prices, and that's even before factoring in the benefits of project pricing.

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VF Drive Product Range

We will also accept enquiries for ABB, Danfoss, Emerson and other Manufacturers VF Drives.

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VF Drive Applications

VF Drives are ideal for a wide range of industries & applications, including:

powerflex 527

Water & Wastewater Treatment

Mining, Metals, & Minerals

Food & Beverage

Renewable Energy

Infrastructure

Manufacturing

Agriculture / Vertical Farms

Oil & Gas

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VF Drive Installation Guidelines

Correct installation of VF Drives is of major importance for the long term reliability of your VF Drives, associated motors, and other equipment that may be negatively impacted by incorrect installation. 

It’s not all about the best price, although it’s one of our major selling points. Correct installation of VF Drives is of major importance for the long term reliability of your drives, motors, and connected equipment that may be negatively impacted by incorrect installation.

To help you achieve optimal results, here are some of PLC Hardware’s essential guidelines to consider when selecting and installing VFDs.

Key Selection Considerations

Motor Compatibility

Ensure the VFD is fully compatible with the motor it will control. This includes matching the voltage, current, and power ratings, as well as verifying compatibility with the motor type (e.g., induction or synchronous).

Application Requirements

Understand the specific needs of your application. Factors such as speed control precision, torque demands, and environmental conditions (e.g., temperature, humidity, and dust) will influence the type of VFD you choose.

Input Power Supply

Verify that the VFD is compatible with your facility’s power supply, including voltage levels and phase type (single-phase or three-phase).

Control Features

Select a VFD with the appropriate control methods and communication protocols (e.g., Modbus, EtherNet/IP) & IO requirements to meet your operational and integration needs.

Safety and Protection Features

Ensure the VFD includes essential safety features such as overload protection, thermal management, and safe torque off and safe torque monitor compliance with industry safety standards (e.g., UL, CE).

Budget and Total Cost of Ownership

While upfront costs are important, consider the total cost of ownership, including maintenance, energy consumption, and potential downtime.

VF Drive Installation Best Practices

Location and Environment

Install the VFD in a well-ventilated area with adequate cooling. Avoid locations exposed to direct sunlight, excessive heat, or high levels of dust and moisture.

Electrical Connections

Follow the manufacturer’s guidelines for wiring, grounding, and the use of protective devices. Proper electrical connections are crucial to prevent faults and ensure safe operation.

Cooling and Ventilation

Ensure sufficient airflow around the VFD to prevent overheating. If necessary, install additional cooling systems or fans to maintain optimal operating temperatures.

EMI Considerations

Minimise electromagnetic interference (EMI) by using shielded cables and proper grounding techniques. This helps prevent interference with other equipment and ensures reliable VFD performance.

Frequently asked questions

What is a VFD?

A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of the power supplied to the motor. It’s commonly used in industrial and commercial applications to improve energy efficiency and process control.

How does a VFD work?

A VFD converts incoming AC power into DC power using a rectifier, then converts it back to AC at a variable frequency and voltage using an inverter. This allows precise control of motor speed and torque, enabling energy savings and smoother operation.

Can a VFD be used with any motor?
VFDs are typically designed for use with three-phase induction motors. However, they can also be used with some single-phase motors and synchronous motors, depending on the VFD’s specifications. Always check the motor and VFD compatibility before installation.
What is the difference between a VFD and a soft starter?

  1. A VFD provides full control over motor speed, torque, and acceleration/deceleration.

  2. A soft starter only controls the starting and stopping of the motor, reducing inrush current but not providing speed control.

Are VFDs energy-efficient?

Yes, VFDs are highly energy-efficient because they adjust the motor speed to match the load requirements, reducing energy consumption. This is particularly beneficial in applications like pumps, fans, and conveyors, where the load varies over time.

Can VFDs be used in hazardous areas?

Yes, some VFDs are designed for use in hazardous areas (e.g., those with explosive gases or dust). These VFDs have special certifications, such as ATEX or IECEx, to ensure they meet safety standards for hazardous environments.

Can I retrofit an existing motor with a VFD?

Yes, in most cases, you can retrofit an existing motor with a VFD. However, you’ll need to ensure the motor is compatible with variable frequency operation and that the VFD is properly sized and configured for the application.

What are the common communication protocols for VFDs?

Common communication protocols used with VFDs include:

  • Modbus RTU/TCP

  • Ethernet/IP

  • Profibus

  • CANopen

  • DeviceNet

These protocols allow the VFD to integrate with control systems and PLCs for advanced automation.