Variable Frequency Lift Door Control Box

This Variable Frequency Lift Door Control Box is developed by Wuxi Ruisida Electric. It is designed for industrial sectional door systems driven by three-phase induction motors.

A key challenge in industrial door systems is position loss caused by power failure, manual operation, or mechanical disturbance, which can lead to limit errors and operational safety risks.

This control system integrates an external multi-turn absolute encoder to maintain accurate door position feedback.

The encoder ensures position data is preserved even after power loss, eliminating the need for manual re-homing or limit reset procedures.

The system uses variable frequency control for smooth acceleration and deceleration of induction motors ranging from 400 W to 1500 W at 220 V.

The control interface includes basic operation buttons for open, close, and stop functions, along with an emergency stop input that disables the control circuit in emergency conditions.

The absolute encoder continuously monitors door position and enables automatic recovery of travel limits after power interruption or manual intervention.

The control box includes pre-configured input/output interfaces for safety accessories, including infrared protection sensors, safety edge switches, access door interlocks, and warning signal devices.

Optional remote control functionality is supported using a coded wireless system.

In the event of power failure, a manual release mechanism allows operators to disengage the drive system for manual door operation, ensuring continued accessibility.

The system is designed to restore normal operation automatically once power is restored, without requiring recalibration.

Each unit undergoes functional testing and aging verification before shipment to ensure reliable performance in industrial environments.

This control box is suitable for industrial workshops, warehouses, logistics centers, and aviation hangars using sectional overhead door systems.

We provide a 3-year warranty for the complete unit and long-term technical support. For international customers, remote troubleshooting, video guidance, and commissioning support are available.

Samples can be provided for evaluation before bulk orders. Custom I/O configurations and encoder integration options are supported upon request.

This Variable Frequency Lift Door Control Box provides accurate position control, improved safety integration, and reliable operation for industrial door automation systems.

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