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).
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.
We will also accept enquiries for ABB, Danfoss, Emerson and other Manufacturers VF Drives.
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.
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).
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.
Verify that the VFD is compatible with your facility’s power supply, including voltage levels and phase type (single-phase or three-phase).
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.
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).
While upfront costs are important, consider the total cost of ownership, including maintenance, energy consumption, and potential downtime.
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.
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.
Ensure sufficient airflow around the VFD to prevent overheating. If necessary, install additional cooling systems or fans to maintain optimal operating temperatures.
Minimise electromagnetic interference (EMI) by using shielded cables and proper grounding techniques. This helps prevent interference with other equipment and ensures reliable VFD performance.
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.
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.
A VFD provides full control over motor speed, torque, and acceleration/deceleration.
A soft starter only controls the starting and stopping of the motor, reducing inrush current but not providing speed control.
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.
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.
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.
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.