Question

In: Mechanical Engineering

A SCADA system monitors an application through an RTU out in the field. Please list typical RTU hardware that may be encountered.

A SCADA system monitors an application through an RTU out in the field. Please list typical RTU hardware that may be encountered.

Solutions

Expert Solution

Typical RTU Hardware that mau be encountered are

  • Control processor and associated memory
  • Analog inputs
  • Analog outputs
  • Counter inputs
  • Digital inputs
  • Digital outputs
  • Communication interface(s)
  • Power supply
  • RTU rack and enclosure

Requirements for RTU system:

Hardware:

Individual RTU expandability (typically up to 200 analog and digital points)

  • Off the shelf modules
  • Maximum number of RTU sites in a system shall be expandable to 255
  • Modular system – no particular order or position in installation (of modules in a rack)
  • Robust operation – failure of one module will not affect the performance of other modules
  • Minimization of power consumption (CMOS can be an advantage)
  • Heat generation minimized
  • Rugged and of robust physical construction
  • Maximization of noise immunity (due to harsh environment)
  • Temperature of –10 to 65°C (operational conditions)
  • Relative humidity up to 90%
  • Clear indication of diagnostics
  • Visible status LEDs
  • Local fault diagnosis possible
  • Remote fault diagnostics option
  • Status of each I/O module and channel (program running/failed/communications OK/failed)
  • Modules all connected to one common bus
  • Physical interconnection of modules to the bus shall be robust and suitable for use in harsh environments
  • Ease of installation of field wiring
  • Ease of module replacement
  • Removable screw terminals for disconnection and reconnection of wiring

samet mamat answered 2 years ago
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