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Bus Rapid Transit Platform Screen Door System



Welcome to use our products. You’d better read this operation instruction carefully before using it in order to make it get favorable performance, long life service and satisfactory effect.



Platform Screen Door is the important safety equipment in use of metro, light rail and Bus Rapid Transit systems. These platform edge doors separate the stations with the traffic to prevent passengers from any injury caused by accidental falling outside. Platform Screen Doors full-height are often used in subway system, increasing the fuel economy of metro environment control system. Platform Screen Doors half-height are often used in ground stations, convenient to look-through and easy to install, suitable for light rail and BRT systems.




I. PSD Controlling System Introduction
II. Technical Data
III. Controlling & Operation


I. PSD Construction
II. Parameters
III. Working Scheme of Controlling System
IV. Troubleshooting
V. Trouble Diagnosis
VI. Position Adjustment
VII. Maintenance of Driving Mechanism and Guide Rail




Platform Screen Door consists of two parts: mechanical part and pneumatic-electrical part. The former includes Door Configuration and Driving System; the latter includes Intellectual Controlling System and Power Supply System.


I. PSD Controlling System Introduction

PSD Controlling System consists of Scheduling Centre System and Station Controlling System.

Scheduling Centre System includes Central Server, Central Work Station, Scheduling Centre and relevant application software.
Function of Scheduling Centre System: When information data enter Central Server through interface of Scheduling Centre, application software of Central Server will sort the data packets and arrange them into forms and graphs for storage, calling and printing.
General Network Topology Diagram of Central Scheduling System of BRT PSD.

Station Controlling System consists of Central Interface Disc(PSC)(includes logical control unit and state monitor unit), Station Industrial Computer(IPC), Door Controlling Unit(DCU), Radio Frequency Identification(RFID), Station Application Software, Communication Medium and Interface.
Platform Screen Door Configuration consists of Base, Stationary Enclosure and Sliding Door.

Platform Screen Door Driving System uses brushless DC motor(24V, 100W) as its drive force, which is output by worm and gear. Synchronous belt then change the rotative movement of moter into linear reciprocating movement of door to open and close the sliding door. Self-locking of sliding door is managed by controlling the motor driving program. When the sliding door meet with any obstruction during closing, controller will receive a signal and send out a command to open the door to prevent any injury or damage.


II. Technical Data
1) Total length of each PSD team: 3.42m
2) Total height of door configuration: 1.26m
3) Opening of sliding door : 1.5m
4) Width of stationary enclosure: 180mm
5) Precision of vehicle parking: ±100mm
6) Door closing force: ≤120N (measured at 1/3 of the way of closing )
7) Kinetic energy of sliding door within the last 100mm of closing: ≤1J
8) Max. kinetic energy during door closing: ≤10J
9) Noise level at station: 70dB(A)
10) Opening time of sliding door: Adjustable at 2.5±0.1s ~ 3.0±0.1s
11) Closing time of sliding door: Adjustable at 3.0±0.1s ~ 3.5±0.1s
12) Reopening times when meeting with obstacle: Adjustable at 3 times
13) Manual opening force: ≤133N
14) Reaction time of door after commanding on Station Controlling System: ≤0.3s
15) Life span of complete system: ≥20years
16) Power supply: AC input: AC220±10% V Rating frequency: 50±0.5Hz
17) System grounding: TN-S
18) Voltage endurance: In accordance with IEC standard (for pneumatic-electrical units and devices in PSD), be able to stand for 1 min. under line-frequency 2kV, 50Hz.


III. Controlling & Operation
There are three controlling means of PSD: system control(on vehicle for driver operation), station control(in service room) and manul control(in service room, for emergency use). Herein manual control has the highest priority.


1) System control: a basic control system, which is to control the electrical double sliding doors with wireless remote control device. PSD normally responds within 0.3s upon commanding of system control; when the driver opens the vehicle door, PSD will opens itself simultaneously; when the driver closes the vehicle door, PSD will closes itself simultaneously. PSD runs 20 hours a day, opening and closing itself one time every 120s, for 365 days continuously per year.
This control system is designed as a multithreading remote control, that is all the vehicles and PSDs within a line are remote-controlled by the same frequency. To invoid misact of nearby vehicle within the line, control distance is set as 7 meters.
Normal Operation Mode(System Control)
Vehicle parking-----driver presses opening button-----vehicle door opens and sends out a signal simultaneously-----PSD opens
Driver presses closing button-----vehicle sends out a closing signal-----PSD closes-----vehicle door closes-----vehicle leaving

Sketch map:

To monitor the running status of PSDs on the platforms, on the control panel of service roon installed a pilot lamp and a digital display, indicating whether the remote control devices and PSDs are working normally or not. In case of any failure, digital display will give a failure code, and the failed PSD unit will be isolated and operated by station control.


2) Station control: when any abnormity happens, e.g. system control cannot work properly or one PSD fails to respond to system control commands, the operators can open and close the doors by manual control button on the control panel in service room or by manually operating the remote control device.
Station control is designed as a shunt-wound controlling, which is a backup of control system. According to the failure indication on control panel in service roon, the operator can manipulate the PSD easily and accurately by this control backup. Even if any unexpected power supply failure, station control is ensured by automatic switching to UPS in service room.


3) Manual control: a swithing system between manual and auto control is setup on the controller of electrical sliding doors. Manual control takes the highest priority. In case of any accident or emergency leads to failure of system control or station control, manual control is needed to ensure working order on platform. To manually control the doors, you just need to turn off the power switch of master controller, and push the doors easily. After all problems removed, auto control can be resumed by switching on the power of master controller.

When the bus stops at the platform, two doors of it usually correspond to two PSDs. When the driver presses the open side of the switch, bus door and PSD open simultaneously; When the driver presses the close side of the switch, bus door and PSD close simultaneously. If PSD meets any obstruction during closing, it will open automatically for three times(adjustable). And if the obstruction still exists, the PSD will open itself completely and stop working, waiting for settlement until the operator re-close it by pressing the switch on control panel in service room.

Below is the Control Panel:
When any system failure, blanks in failure indicating area will show the failed location, unit number and failure cause: 1. Moter broken; 2. Bad connection of master line; 3. Blocking in guide rail; 4. System self-checking unfinished.