Motor Drives & Inverters
PX Electronics supplies Motor Drives & Inverters for motor control, speed regulation and DC-to-AC power conversion applications.
The range includes compact variable speed motor drives, higher-performance current vector inverters and pure sine wave DC-to-AC inverters. These products are used where engineers need controlled motor operation, adjustable speed, stable torque performance or clean AC output from a DC battery supply.
Each product type serves a different purpose. A variable speed motor drive controls the speed and behaviour of an AC motor. A current vector inverter provides more advanced motor control for demanding machinery. A pure sine wave inverter converts DC battery power into mains-style AC output for backup, off-grid and mobile power systems.
PX Electronics can help customers select the correct product around the connected load, input supply, motor rating, control method and installation environment.
Available Motor Drive & Inverter Products
PX Electronics offers a focused range of motor drives and inverter products for industrial, commercial, automation and small power conversion applications.
Choosing the Correct Motor Drive or Inverter
The correct selection depends on whether the application requires motor speed control, higher-performance vector control or AC output from a DC source.
| Product Type | Best Suited To | Typical Requirement | Product Range |
|---|---|---|---|
| Variable Speed Motor Drive | Fans, pumps, conveyors, compressors and general machinery | Controlled motor speed, acceleration and energy-efficient operation | PXe-PI150 |
| Current Vector Inverter | Demanding machinery, process equipment and industrial automation | Stable torque, improved response and more precise motor control | PXe-PI550 |
| Pure Sine Wave Inverter | Battery backup, off-grid, renewable and mobile power systems | DC battery input to clean 110V or 220V AC output | PXe-FVS |
Core Capabilities
Motor Speed Control
PX variable speed motor drives allow compatible AC motors to operate at controlled speeds, reducing mechanical stress and improving process control.
Vector Motor Control
Current vector inverter options provide more advanced control for applications where torque response, speed stability and load variation are important.
Pump, Fan and Compressor Applications
Motor drives can be used to control pumps, fans, compressors and similar equipment where speed adjustment can support process control and energy efficiency.
Industrial Automation Integration
Selected motor drive and inverter products support keypad operation, terminal control, digital and analogue I/O, RS485 communication and external control functions.
Pure Sine Wave AC Output
PX pure sine wave inverters convert DC battery power into clean AC output for small backup systems, off-grid installations, renewable battery systems and mobile power applications.
Protection and Monitoring
Products in the range include protection and status functions appropriate to the selected model, including overload, overvoltage, undervoltage, overtemperature and short-circuit protection.
Typical Applications
PX Motor Drives & Inverters are used where equipment requires controlled motor operation or AC output from a DC source. Typical applications include:
- Fan and pump speed control
- Conveyor systems
- Compressors
- Packaging machinery
- HVAC-related motor control
- Agricultural and irrigation systems
- Textile machinery
- Cable and wire manufacturing
- Water treatment and pumping stations
- Industrial automation equipment
- Production machinery
- Small industrial control systems
- Battery backup systems
- Off-grid power systems
- Renewable battery installations
- Remote monitoring sites
- Mobile and portable AC power systems
Motor Drive and Inverter Selection Guidance
Motor drives and inverters should be selected using the complete electrical and mechanical requirement, not simply the motor power rating. For motor control applications, PX Electronics will normally review:
- Available input supply
- Motor voltage and power rating
- Single-phase or three-phase motor requirement
- Load type
- Starting torque requirement
- Speed range
- Acceleration and deceleration requirements
- Duty cycle
- Control method
- Analogue and digital I/O requirements
- Communication requirement
- Braking requirement
- Installation environment
- Enclosure and cooling requirements
For pure sine wave inverter applications, selection is based on the DC input voltage, AC output voltage, continuous wattage, surge requirement, load type, battery capacity and required protection functions. Motors, pumps, compressors, transformers and capacitive input loads can draw more current during start-up than during normal running. This should be allowed for when selecting either a motor drive or a DC-to-AC inverter.
Why Choose PX Electronics for Motor Drives & Inverters?
PX Electronics supplies motor drives and inverters for practical industrial and power conversion applications where the connected equipment needs to be matched properly to the supply and control requirement.
A small fan drive, a current vector inverter for industrial machinery and a battery-powered pure sine wave inverter are not specified in the same way. Each has different priorities, from speed control and torque response through to waveform quality, DC input voltage, protection and installation format.
PX supports customers with product selection, technical review, supply and after-sales support. Where required, systems can be reviewed alongside wider PX power conversion equipment, including Static Frequency Converters, AC power supplies and power analysers.
Motor Drives & Inverters FAQs
What is a motor drive?
A motor drive is an electronic control device used to control the speed, torque and operation of an electric motor. It can vary the frequency and voltage supplied to a compatible motor, allowing controlled starting, stopping and speed adjustment.
What is a variable speed motor drive?
A variable speed motor drive allows a motor to operate at different speeds rather than running directly at fixed mains speed. This is useful for pumps, fans, conveyors, compressors and process equipment where the load does not always need full-speed operation.
What is an inverter?
The term inverter can mean different things depending on the application. In motor control, an inverter is often used to describe a drive that controls an AC motor. In power conversion, an inverter converts DC power into AC output.
The PX category includes both motor control inverters and DC-to-AC pure sine wave inverters.
What is the difference between a motor drive and a pure sine wave inverter?
A motor drive is designed to control a compatible motor. Its output is intended for motor speed and torque control.
A pure sine wave inverter converts DC battery power into AC output for connected electrical equipment. It is not the same as a motor drive and is not normally used as a general-purpose motor speed controller.
What is the difference between the PI150 and PI550?
The PI150 is a compact variable speed motor drive for general motor control applications such as fans, pumps, conveyors and light industrial equipment.
The PI550 is a higher-performance current vector inverter for more demanding applications where torque response, stability and process control are more important.
When should I use a current vector inverter?
A current vector inverter is useful where the motor load changes, where low-speed torque matters, or where the process needs more stable speed and torque control than a basic variable speed drive would normally provide.
Can PX motor drives be used with pumps and fans?
Yes. Motor drives are commonly used with pumps and fans to control speed, reduce mechanical stress and support more efficient operation under variable load conditions.
Can PX motor drives be integrated into a control system?
Selected motor drives include terminal control, digital and analogue I/O and RS485 communication. The required control method and communication functions should be confirmed before selection.
What is a pure sine wave inverter used for?
A pure sine wave inverter converts DC battery power into AC output with a waveform similar to mains electricity. It is used for off-grid equipment, backup systems, renewable battery installations, remote monitoring sites and mobile power applications.
What DC input voltages are available for the FVS inverter?
The PXe-FVS Series is available for 12V, 24V, 48V, 60V and 72V DC input systems.
Can a pure sine wave inverter power inductive or motor-driven loads?
Yes, provided the inverter is correctly sized. Inductive, capacitive and motor-driven loads can require additional capacity for start-up current, so the continuous load and surge demand should both be considered.
What information is needed for a quotation?
PX Electronics will need the input supply, motor or load rating, required output, load type, starting current, speed range, control method, communication requirement, installation environment and any documentation or support requirements.
Need help choosing a Motor Drive or Inverter?
Contact PX Electronics for product advice, specification support or a quotation for your application.