Detailed Description DFA127 is a modular electro-mechanical swing door drive system. The whole set includes main control board STG127, DC motor, integrated spring mechanism, encoder and housing. The INVERSE version uses mechanical spring energy storage; it can open the door even without mains power for smoke ventilation fire safety applicationrecord. It is suitable for door size EN4~EN6, maximum door leaf weight up to 300kg.

The unit is powered by AC230V 50/60Hz. The built-in microprocessor continuously monitors door position, speed and torque, auto adjusts opening/closing speed, hold-open time and soft start/stop curve. It supports multiple operation modes: Automatic, Hold Open, Manual, One-way and Locked, selectable via BDE-D digital keypad or BDI mechanical 3-position switchDoordynami.... For double leaf doors, two DFA127 communicate via CAN bus to realize synchronized master-slave operation, with safety reversing function on both leavesManualsLib.

Safety functions include obstacle detection and anti-pinch protection. When collision is detected during opening or closing, the door reverses immediately, complying with EN16005 and DIN18650 standards. Optional accessories: backup battery pack, radar motion sensor, safety sensor strip, electric lock, fire smoke signal interface. The battery pack allows hundreds of opening cycles during mains failurerecord. The blue button on mainboard supports door learn calibration, parameter reset and factory restoreDoordynami....

IP20 for internal drive electronics, working temperature -15℃ ~ +50℃. Installation type is overhead concealed mounting, equipped with standard arm or sliding arm for push/pull door installation.

DFA127 is legacy discontinued automatic door drive. Many commercial buildings still keep this swing door system. Replacing with original DFA127 can reuse existing door arm, wiring, sensors and mechanical structure without civil modification. Separate spare parts are available: STG127 mainboard, motor gearbox, spring assembly, arm, battery pack and fuse.

Before shipment, every DFA127 unit will pass full inspection: power-on self-test, motor running test, door calibration test, obstacle reverse safety test, CAN bus communication test and relay signal output test. 12-month warranty. We provide remote support for wiring, parameter calibration, fault code diagnosis. Fast global shipping for urgent maintenance orders.

For automation maintenance engineers and system integrators, DFA127 is reliable spare swing door operator for legacy Record automatic door systems. It restores automatic door movement and safety protection, extends service life of building access system and avoids expensive door reconstruction.