Fault detection

The PMU detects and reports many different faults.

Train status

  • Abnormal wagon behaviour
  • Wheel flats (wheels deformed by friction)
  • Instability
  • Frozen brakes
  • Broken springs
  • Thin wheel flanges
  • Estimate of time to wheel change and wheel lathing
  • Maintenance warning for wheels, springs and bogies
  • Security warning for reduced speed and emergency train stop


  • Broken rail
  • Heat distortion
  • Abnormal turnout function
  • Track cracks


  • Traceability
  • Inventory control


Railway Metrics and Dynamics Sweden AB
BOX 5339
102 47 Stockholm