DELTA VFD004DD21A VFD-DD Elevator Door Drive, 0.4kW, 2.5A, 230V Single Phase

Overview

The DELTA VFD004DD21A belongs to the VFD-DD series, a dedicated variable frequency drive for elevator door operator systems. It delivers smooth speed and torque control for door opening and closing cycles, widely stocked as spare for passenger and freight elevator modernization and maintenance.

Features This door drive integrates auto door width learning, anti-pinch blockage detection and adjustable speed curve. The VFD004DD21A supports PM synchronous motor and induction motor, built-in keypad for parameter setup and fault check. It provides overload, overcurrent and overvoltage protection for reliable elevator door operation.

Specs

Model: VFD004DD21A Series: VFD-DD elevator door drive Rated power: 0.4 kW / 0.5HP Output current: 2.5 A Input: 1-phase 230 VAC Output frequency range: 0–120 Hz Cooling: natural cooling Mounting: cabinet installation Protection class: IP20 Certifications: CE Product status: elevator spare drive

Principle

The VFD004DD21A adjusts output voltage and frequency to control door motor speed and torque. It detects current rise to identify door obstruction and triggers automatic re-open. The drive records fault codes and status for elevator troubleshooting.

Applications

The VFD004DD21A is widely deployed in passenger elevators, freight elevators and lifting equipment. It is used for precise motion control of elevator door operators.