PM IE4 Motor – efficiency and reliability

Permanent Magnet (PM) motors are a key technological component in BD series screw compressors, manufactured by B&D (Baldor-Tech). PM motors stand out for their exceptional efficiency and performance, which translates to excellent machine operation.

Key features and benefits of using PM motors in these compressors:

✅ High energy efficiency (IE4 class): Using PM motors in IE4 efficiency class means meeting some of the strictest international standards for energy consumption. In practice, this translates into lower electricity bills, reduced carbon footprint, and more sustainable compressed air operations.

✅ Precise control: PM motors allow accurate adjustment of rotational speed and torque, which is extremely important in compressors to match performance to varying working conditions. This ensures B&D series compressors operate only when and as intensely as the production process demands.

✅ Noise and vibration reduction: PM motors are known for low noise and vibration levels, improving user comfort and minimizing environmental impact.

✅ Long-lasting durability: The lack of brushes in PM motors means they require less maintenance and are less prone to failure, which extends the life of the entire compressor system.

✅ High reliability: PM motors in the IE4 class are resistant to damage and maintain stable operation even under long-term use in demanding industrial conditions. This ensures production continuity and reduces the risk of downtime.

The IE4 class is more than just a label — it means real energy savings, greater reliability, and a move toward modern, energy-efficient production.

Built-in inverter

Speed control via inverter (VSD – Variable Speed Drive) allows precise control of motor speed and significantly reduces starting current. This ensures smooth startup without sudden power surges, which translates into longer component life and overall system stability.

Key benefits of using an inverter in B&D screw compressors:

✅ Significant energy savings: The variable speed drive adjusts compressor performance exactly to current compressed air demand. In practice, this reduces energy waste during lower load periods and provides savings of up to 35% compared to fixed-speed compressors.

✅ Synergy with PM motor: Combining the inverter with the high-efficiency PM IE4 motor enables even greater efficiency – up to 42% energy savings. It’s one of the most economical and environmentally friendly solutions in the compressed air industry.

✅ Stable operating pressure: The inverter eliminates pressure fluctuations, maintaining it within a narrow tolerance range. This ensures that compressed air-powered devices operate steadily, reducing the risk of pressure-related downtime.

✅ Reduced maintenance costs: Smooth starts and stops reduce mechanical wear of drive and compression system components. Fewer start/stop cycles also increase the lifespan of bearings, couplings, and the motor.

✅ Lower noise and less vibration: Inverter operation, combined with a PM motor, significantly reduces noise and vibration levels. The compressor runs quieter and is more comfortable for the environment – especially important in production halls with many machines.

✅ Reduced electrical grid load: Lower startup current reduces the load on the power grid, which is especially important in facilities with extensive electrical infrastructure.

The inverter in B&D compressors isn’t just an accessory — it’s the foundation of efficient and stable operation. Combined with the PM IE4 motor, it creates one of the most energy-efficient systems in its category.

Control Panel

The B&D controller is an advanced system that manages screw compressor operation in real time, reacting to key parameters and protecting the device from unplanned downtime. It works directly with the inverter and a set of sensors (including temperature, pressure, and flow), ensuring optimal working conditions and complete system safety.

The clear display provides detailed information about:

✅ current alarms,

✅ temperature,

operating hours,

screw module temperature,

current working parameters (pressure, load, speed).

The controller allows you to adjust the minimum and maximum pressure, configure work schedules, and manage load. Thanks to the built-in communication module, it also enables remote monitoring and management of the compressor via Wi-Fi, giving you quick access to service data and operating parameters from anywhere.

B&D Cloud

B&D Cloud is a modern remote monitoring and management platform for DHF series screw compressors, available exclusively through a dedicated mobile app. It provides real-time access to operating parameters, device history analysis, and energy report generation.

Benefits of using B&D Cloud:

✅ Full control via mobile app – monitor your compressor from anywhere, anytime.

✅ Access to key parameters – pressure, temperature, energy usage, and operating hours.

✅ Real-time alerts – immediate notifications of failures, alarms, or threshold violations.

✅ Service planning – maintenance reminders and fault predictions to minimize downtime.

✅ Cost optimization – energy consumption analysis and reports to improve system efficiency.

5-year AirSure warranty

Your devices run non-stop – make sure they stay that way.

Full service protection, genuine parts, and reliable performance for years to come.

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