Blemo / BLEMO Antriebstechnik frequency inverters and soft starters

Engineering profile and manufacturing standards of Blemo / BLEMO Antriebstechnik

German engineering enterprise BLEMO Antriebstechnik GmbH located in Rodgau, Hessen, specializes in the development and manufacturing of industrial power electronics, variable frequency drives, and engineered control cabinets.

Registered at the local district court in Offenbach under commercial number HRB 58374, the company commands decades of deep technical expertise in electric motion regulation.

Drive equipment manufactured by Blemo operates reliably across machine tooling plants, municipal water utilities, airport handling infrastructure, and building climate control installations.

Power drive hardware is designed in compliance with European electromagnetic compatibility standard EN 61000-3-12 and low-voltage directives for continuous heavy-duty industrial service.

Hardware architecture and power topology of ER321 frequency inverters

The ER321 frequency inverter series provides a versatile engineering foundation for precise speed and torque regulation of three-phase induction motors spanning power ratings from 0.75 kW up to 75 kW.

The power stage incorporates robust sixth-generation insulated-gate bipolar transistors while an integrated direct current link reactor effectively suppresses incoming electrical supply harmonics.

The microprocessor core executes advanced sensorless vector control algorithms featuring automated motor parameter tuning.

Comprehensive programmable analog inputs, digital logic terminals, electromechanical relay contacts, and industrial communication ports enable seamless integration of the inverter into automated PLC supervisory frameworks.

Energy-efficient operational algorithms in ER31 fan and pump inverters

Dedicated ER31 and ER330 variable frequency drives are engineered specifically for maximum electrical efficiency across industrial pump impellers, blowers, and air compressors.

The internal control software generates a quadratic voltage-frequency characteristic, significantly lowering iron losses within motor magnetic cores under partial process loading conditions.

An integrated proportional-integral-derivative controller maintains stable fluid pressure or flow rate within closed piping circuits.

When downstream fluid demand ceases, the drive smoothly transitions into an automated power-saving sleep routine, protecting mechanical pump components from thermal stress and reducing site power consumption.

Solid-state SH31 series soft starters for smooth motor acceleration

Solid-state soft starters belonging to the SH31 product family are engineered to manage acceleration and controlled ramp-down of heavy three-phase induction motors with ratings from 7.5 kW to 400 kW.

Anti-parallel thyristor pairs across each phase smoothly throttle applied line voltage, eliminating harmful starting current surges and electrical supply network voltage sags.

Internal mechanical bypass contactors engage automatically once the motor reaches full operating speed, completely eliminating operating thermal dissipation across the solid-state semiconductor elements.

The equipment integrates electronic overload protection, locked rotor monitoring, and three-phase supply imbalance trip logic.

Electromagnetic interference suppression with line reactors and brake resistors

To maintain dependable drive performance under harsh electrical factory conditions, BLEMO manufactures a wide assortment of complementary electrical accessories.

Three-phase incoming line reactors limit transient overvoltage spikes and suppress short-circuit fault currents across incoming feeder networks. Sinusoidal output filters eliminate pulse-width modulation harmonic peaks, preventing motor winding dielectric breakdown over extended wiring lengths.

To absorb excess mechanical kinetic energy during rapid motor deceleration, high-capacity wirewound dynamic braking resistors housed inside protective aluminum heat sinks provide controlled thermal dissipation.

Engineering design and assembly of customized industrial control cabinets

The engineering division of BLEMO Antriebstechnik delivers complete design and custom assembly of motor control panels based on bespoke client electrical specifications.

Rigid steel enclosures rated up to protection class IP54 house variable speed inverters, motor branch circuit breakers, programmable automation controllers, and ergonomic operator touchscreen terminals.

Each cabinet is fitted with regulated forced-air ventilation and thermostat heating elements to ensure uninterrupted continuous operation across harsh ambient shopfloor environments.

Prior to customer dispatch, every assembled panel undergoes complete functional circuit verification and protective trip testing.