Working Principle Diagram of Elevator DC Door Machine System (Electrical Part)

2 BRDS door machine electrical control principle

Description: R1: closing speed (high speed section) adjusting resistor

R2: opening speed (high speed section) adjusting resistor

R3 and R4: voltage dividing resistor (non-adjustable)

R5: opening and closing decelerating section speed adjusting (open and close the door in medium and open and close the door in low)

13: closing second deceleration point switch 24: opening second deceleration point switch

DCL: closing door in place switch DOL: opening door in place switch

2.2 BRDS Door Control Schematic Diagram

Description:

Opening process: when Terminal 4 and terminal 17 are connected when the door opener relay 102A is active, diode D6, D2, D4 conduction, cam switch 23, 24 disconnected, the door opener open speed (high speed section) is determined by the resistance value of R2, when the door is opened to the cam switch 23 closed, the door motor is shunted by resistor R5, the door opens the speed of the first stage of deceleration, when the door is opened to the cam switch 24 closed, the door motor is further shunted to realize the second stage of deceleration, until the door is opened in place. The second stage of deceleration, until the door open in place switch DOL disconnect, 102A relay release, open the door to the end;

Door closing process: when terminal 4 and terminal 18 connected to the door closing relay 101A suction, diode D5, D1, D3 conduction, the cam switch 13, 14 disconnect, the door door off the door speed (high speed section) by the resistance value of the R1, when the door is closed to the cam switch 14 closed, the door motor is shunted by resistor R5, the door motor is shunted by resistor R5, and the door speed is reduced by one stage. When the door motor is shunted by resistance R5, the door closing speed is decelerated in the first stage, when the door is closed to ?

When the cam switch 13 is closed, the door motor is further shunted, and the second stage of deceleration is realized until the door closing in place switch DCL is disconnected, the 101A relay is released, and the door closing is finished.