HAYASHIMU MRL Control Cabinet

HAYASHIMU MRL Control Cabinet 

The MRL (Machine Room-Less) Control Cabinet represents a new generation of elevator control technology, designed to meet the growing demand for compact, efficient, and intelligent vertical transportation systems. As urban spaces become more constrained, the need for elevators that save building space while delivering smooth and reliable operation has increased. The MRL control cabinet is at the heart of these systems, providing precise control over elevator movement without the need for a traditional machine room.

An MRL control cabinet is an advanced electronic control system used in machine room-less elevators, where the traction machine is installed within the hoistway instead of a separate machine room. The control cabinet houses all critical components that manage elevator motion, braking, door operation, and safety logic.

Typically installed within the door jamb or wall recess at the top floor or in the hoistway area, the MRL control cabinet allows engineers and technicians easy access to all elevator parameters without taking up additional building space.

Design and Working Principle

The MRL control cabinet integrates multiple subsystems that work in harmony to manage elevator operation. The system includes:

• Main Controller Board (CPU): Acts as the brain of the elevator, processing commands and monitoring all inputs and outputs.

• VVVF (Variable Voltage Variable Frequency) Drive: Controls the speed and torque of the gearless traction machine, ensuring smooth acceleration and deceleration.

• Brake Control Unit: Engages and releases the motor brake under precise electronic supervision.

• Door Controller: Operates elevator doors smoothly and synchronizes door opening and closing with car position.

• Safety and Communication Circuits: Constantly monitor load, speed, door status, and safety gear for real-time protection and fault reporting.

Through intelligent software and sensors, the MRL cabinet continuously adjusts elevator performance to achieve smooth ride comfort, energy savings, and safety compliance.

Key Features and Advantages

• 🔹 Compact Design: Eliminates the need for a dedicated machine room, saving valuable architectural space.

• 🔹 Energy Efficiency: Integrated VVVF drive system optimizes motor performance and reduces power consumption.

• 🔹 Intelligent Control: Microprocessor-based control ensures precision speed regulation and fault diagnostics.

• 🔹 Safety Compliance: Fully meets international elevator safety standards such as EN81, GB7588, and ISO9001.

• 🔹 Easy Maintenance: Designed for convenient access and simplified troubleshooting via digital display panels.

• 🔹 Silent Operation: Works seamlessly with gearless PMSM (Permanent Magnet Synchronous Motor) for quiet, vibration-free performance.

• 🔹 Adaptability: Suitable for both passenger and goods elevators, as well as modernization projects.