PF400 Platform screen door is developed by Ivy Machinery based on North America rail sliding door technology combining with Chinese metro system environment. The design philosophy is to build simple, reliable, environmental, and energy-saving system.
Normal operation mode
After the train parks within the required range, ATC system will give door opening or closing order to the central control cabinet (PSC). Then PSC gives order to individual DCU to implement the door opening and closing.
System Failure Mode
In case the system control fails, the station operator can open and close the platform door using the control panel in the station control room.
Door Unit Failure Mode
If the individual door has mechanical or electrical problem, the platform operator can open and close door by using local key.
II. Mechanism
Driving mechanism
Includes DC motor and multi-head ball screw to achieve smooth motion and high reliability.
Hanging system
Includes hanger and guide rod. Hanger is connected to the door panel and meanwhile is also connected to the guide rod through the linear bearing.
Guiding mechanism
Consists of lower guide roller and track. When the door panel moves, the roller installed on the low part of door panel will rotate around the guide track.
Locking and unlocking mechanism
Includes spring locking & solenoid activated unlocking mechanism and emergency unlocking mechanism.
DCU
Controls the door movement by getting orders from central control panel.
Sensitive edge system
The sensitive edge system is part of electrical system.
Central control Cabinet (PSC)
Consists of central logic control (PEDC) and monitoring system (MMS). The CAN based technology is used to connect the PSC and DCU.
III. Main Parameters
| Item | Specification |
| Operation Temperature | -40°C - 60°C |
| Operation Voltage | DC12V or DC24V |
| Motor Power | 100W |
| Driving Mechanism | Leading screw |
| Minimum Life Cycle | 1,000,000 |
| Door Closing or Opening Time | 1.5 – 3.5 Seconds |
| Style | Full and half height |