Analogue and Digital Speed Indicators

Company Hasler Rail

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Description
Specifications

Speed indicators play a crucial role in rail vehicle safety and reliability. HaslerRail has been producing speed indicators and data recording systems since 1887, with tens of thousands of devices and systems in use worldwide.

Features / Benefits

  • Modular architecture for flexibility
  • Configurable speed signal (current/voltage, RS485)
  • Suitable for SIL2 speed indication
  • Manual or external illumination control
  • Automatic day/night illumination
  • Maintenance free

The HaslerRail SPEEDO circular-scale speed indicator is a robust device with an extended range of features designed for installation in the cab. It is suitable for main-line locomotives, high-speed trains, suburban units, metro cars, and mountain railways. It offers highly reliable speed indication and warns the driver in the even of a speed indicator fault.

The speed indicator is controlled by a step motor and an electronic control system that converts the actual speed input signal to drive the step motor. Pointer position is checked by a feedback-encoder system that constantly compares the input signal to the feedback signal. The feedback signal is also available via an analog output to compare the actual speed signal outside the speed indicator with the pointer feedback.

The speed indicator is also equipped with a light ring for set or target speed indication. In addition, there are four status-indicator lights in the center of the dial. Optionally, the speed indicator can be supplied with a red/white fault-indicator flag and/or an LCD information display.

  • Freescale PowerPC™ CPU Core
  • Dimensions: 144mm x 144mm x 121mm
  • Protection degree: front IP54, housing IP20
  • Pointer deflection: 254°
  • Power supply: wide range, U_ = 24 .. 110 V
  • Operating temperature: -25°C to 70°C
  • Speed signal (actual, set or target): RS485, or 0 … 20 mA, or 4 … 20 mA, or 0 … 10 V
  • Accuracy of actual speed (pointer indication): ±0.5% of final scale
  • Circular-scale light ring resolution: 120 LED’s from 0 to max. speed
  • Digital input 1: External voltage Umax = 140V, Uon > 12 V, Uoff < 5V, Current limit = 3 mA
  • Digital inputs 2, 3, 4 and flag: Internal voltage Umax = 24V, Current range = 4 … 20 mA
  • Speed feedback signal: RS485, or 0 … 20 mA, or 4 … 20 mA, or 0 … 10 V
  • Digital output relay: changeover switching contact, max. switching current = 0.2 A at max. 140V
  • Communication: RS485 full-duplex (4-wire) or half-duplex (2-wire), 115’200bps
  • Display (LCD): 128 x 64 pixels
  • High flexibility of customization (colors, scale range, LCD display, status lamps)
  • Signal for speed indication according to customer needs (RS485, current or voltage)
  • Automatic control for switching between day/night illumination
  • In combination with TELOC® data recording system provides SIL2 current speed indication function

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