Project First Group Chester

Customer First Group   City Chester / UK Supplier Kärcher Planning Commissioning Hand over 9/2003 10/2003 10/2003

Projectdescription:

The plant is used to wash trains with body and underframewash of trains .

The wash will executed with alcaline detergent.

The washtime is appr. 20 min for one train with front and rearwash. No operator is necessary. The traindriver starts the washprogramm

The project First Group Chester includes

	Development of controllersoftware bodywashplant
	Development of controllersoftware underframewashplant
	PC-based data recording
	Commissioning in Chester / UK

Controlling:

To control the plant a Simatic S7 400 is used with a CPU 414-3 DP . The Sensor/Actors are controlled viaInterbus - S

A remote touch panel is used to communicate via fiber-optic and PROFIBUS-DP protocol to the CPU.

PC based data recorder:

Each washprocedure will recorded with

	Date
	Time
	Washprogram
	Washtime

Bodywash:

The Bodywash is done with Front- rear- and sidewash. The train get the sidewash by moving train.

A dryer at the plant exit dries the train

A speed-measurement signals the train driver that he is to fast or to slow.

Underframewash:

The Underframewash is used to clean the trains underframe before maintenance work . The train will positioned over 2 trolleys, which move from one end to the other and wash the train with high-pressure

Critical sections like Transformers, Inverters will automatically not washed.