Elevator door drive, DD series:

• The elevator door applications-specific DD series AC motor drives have smooth door open curve, blocking detection, and door width auto-tuning with exact open and shut control.
• Easily navigable design.
• Door width auto-calibration.
• Smooth curve for door reopening.
• Detecting blockages and safeguarding safety (four steps).
• Asynchronous induction motors and synchronous permanent magnet motors.
• Various door control options: options for multi-step speed control, distance control, and speed control.