S990 type railcar (Romania)

Source: CAN Newsletter December 2008

Dan Staneasa (SC Tehmin-Brasov)

The SC Tehmin-Brasov company located in Brasov (Romania) has been asked to provide a command and diagnose system for S900 type railcars, which are currently under a modernization process.
S900 type railcars have two axles, two driver cabs and are capable to transport up to 64 passengers on regional lines with a maximum speed of 70 km/h. They were built starting with nineteen-thirties. During the years they have faced a lot of modifications. In the beginning the car body was made from wood.
The actual modernization process is involving the replacing of the old diesel engines and gearboxes of the vehicle. Consequently, a new electrical installation has been required.
The command and diagnose system has to perform:

  • Starting and stopping of the diesel engine
  • Control of the diesel engine’s speed
  • Control of the railcar’s direction reversing
  • Control of the lighting and sanding
  • Collecting speed information from speedometer
  • Displaying of different parameters for the driver (diesel engine’s speed, current gear attained by transmission, battery voltage, battery’s charging/discharging current, transmission oil temperature, etc.)
  • Diagnose for the diesel engine and other railcar’s systems

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