Leelavati Automation Pvt ...

We are well known for exporting of wide variety of Motor Controllers Take control of your motors with high-performance DOL starters, soft starters, VFDs, and servo motor controllers. Whether you're running pumps, packaging lines, or robotic arms, our motor controllers provide smooth startups, accurate speed regulation, and superior energy efficiency. Compatible with PLCs and SCADA systems, they offer fieldbus support, built-in safety features, and intelligent tuningall packed into compact, rugged enclosures.Explore our range of AC, DC, and servo motor controllers with real-time diagnostics, fieldbus communication, and advanced overload protection. Contact us for sizing support and project-based pricingUnlock Efficiency with Advanced Motor Controllers Precision, Protection & Smart Automation Motor Controllers in Industrial Automation

Motor controllers are electronic or electromechanical devices that regulate the performance of electric motors. They control parameters such as speed, torque, direction, and braking based on input commands, feedback, or automation logic. In modern industrial systems, they are essential for energy efficiency, precision control, and machinery protection.

Types of Motor Controllers & Functions

Direct-On-Line (DOL) Starters

Function: Basic on/off motor switching with overload protection.

Application: Pumps, fans, conveyors (under 5HP).

Features: Contactor + thermal overload relay.

Soft Starters

Function: Gradual voltage ramp-up to reduce inrush current and mechanical stress.

Application: Compressors, centrifugal pumps, HVAC

Features: SCR-based voltage control, programmable ramp time

Smooth start/stop, reduces electrical/mechanical wear

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Variable Frequency Drives (VFDs)

Controls motor speed and torque by varying supply frequency and voltage.

CNC machines, conveyor belts, elevators, fans, mixers

PWM inverter, PID control, acceleration/deceleration ramps

up to 10HP, 3-phase 50+HP

Pros: Full speed control, energy savings, torque boost

Servo Motor Controllers

High-precision motion control using encoder feedback.

Robotics, pick-and-place systems, CNC, printing

Closed-loop feedback, encoder/PID control, communication interfaces (Modbus, EtherCAT)

High accuracy, fast response, programmable profiles

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Stepper Motor Drivers

Discrete position control through microstepping.

3D printers, inspection systems, camera sliders

Pulse/direction control, microstepping, current regulation

Open-loop control, simple to implement

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Smart Features in Modern Controllers

Built-in PLC logic Logic control without external PLC Saves cost and space

Modbus/PROFIBUS/EtherCAT Fieldbus integration Supports Industry 4.0

Auto-tuning (Servo/VFD) Adjusts gain parameters automatically Simplifies commissioning

Energy feedback (regeneration) Converts braking energy back to grid Saves energy in elevators/cranes

Overload & stall protection Protects motor from overcurrent and stalling Increases system life

Panel/DIN mount enclosures Varies with size (IP20IP66) Flexible installation

13HP AC Motors DOL / Soft Starter

110HP AC Motors VFD

50HP+ Motors VFD / Soft Starter

Servo Motors Servo Drive

Stepper Motors Stepper Driver

Applications by Sector

Industry Use Case Recommended Controller

Packaging Conveyor belt speed control VFD

Robotics Precision arm movement Servo controller

HVAC Fan and compressor regulation Soft starter / VFD

Printing Roll-to-roll tension control Servo / Stepper

Machine tools Spindle & feed drive control VFD + Servo

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