The EP 2002 smart valve is essentially a mechatronic item, comprising an electronic control portion mounted directly onto a pneumatic servo-valve. It supplies regulated Brake Cylinder Pressure (BCP) to the brake actuators on the local bogie, whilst also performing per axle WSP control. The valve is controlled and monitored by a combination of software and hardware, with the ability to detect potential hazardous faults.
The EP2002 smart valve provides wheel protection using a combination of locally derived axle speed data and speed data from other valves connected via the dedicated Controlled Area Network (CAN) data bus. The smart valve also modulates the pressure in accordance with a pressure demand received over the CAN bus.