VFD DD serie

The Delta DD series elevator door control drive is an intelligent drive with outstanding features that include a modularized design for easy removal and installation of terminal blocks, a power switch designed for safety, and a built-in digital keypad that provides quick operation control. This drive offers four door control modes for door opening and closing. The distance control mode is controlled by an encoder that counts PG pulses to obtain the speed position without sensor. The speed control mode is to control the speed and it needs detection sensors to execute the door open and close action. The multi-step speed control mode generates a smooth door open-and-close curve using PLC control. The Delta DD series elevator door control drive provides a complete solution for elevator door control.

Door Drive Functions and Features 

User Friendly Design

Door Control Solutions

Built-in Door Control Functions 

• Door Width Auto-tuning 
  Door width is automatically measured and saved as the door opens and closes. It will open and close twice to confirm the door width accuracy. Once confirmed, the measurement is recorded into the drive parameters. 

• Smooth Door Curve 
  The door will reopen in a reverse direction when door blockage is detected. The reopen is performed with a smooth curve to minimize the impact of vibration. • Demo Mode Demo mode demonstrates the door open, close and reverse motions to ensure the performance and quality of the drive system and the door structure.

• Synchronous (PM) Motors Applications Asynchronous (IM) andCompatible with Delta ECMD series door control servo motor and other induction motors (signal type encoder that accepts open collector and differential signal with 5, 12 or 24VDC).

• Door Protection System 
  Passengers enter and exit the elevator with greater safety. When the light curtain and safety panel fail to function, the drive will command the door to re - open as it detects a rise of current caused by the blocked door. 

• Blockage Detection 

- Precise torque detection at blockage

 - Door remains at current position for a few seconds 

- Door “OPEN / CLOSE” time - out 

- Forced open

Built-in EMI Filters 

(except for Basic Models)