Subsea control systems

During the past few decades ABB has delivered a large number of subsea topside control systems, including development, engineering, production and commissioning. We have developed communication interfaces with major subsea system suppliers worldwide.

Range of ABB's topside solutions:

  • ABB Subsea Control Units (SCU) located on topside, communicating with 3rd party Subsea Communication Units (SSCU)
  • SEM located subsea and has a variety of interface solution with 3rd party SCUs

What we deliver:
  • Standalone systems
  • Integrated into ABB topside control systems
  • Integrated systems into 3rd party control systems

Why ABB?
  • ABB has more than 25 years' experience in this field of the industry.
  • ABB has provided thousands of advanced process control and optimization solutions.
  • ABB has successfully delivered topside control systems to Ormen Lange, Åsgard, Snøhvit and Tordis subsea projects.

DCS functionalities

  • Process responsibility
  • Control & monitoring of subsea equipment
  • Heartbeat
  • Operator interface (well, template, HPU, hydraulic etc.)
  • Data management
  • Process alarm
  • User access levels
  • Time synchronization master
  • Configuration of DCV and other parameters (chokes, valves, analog and digital I/O)

MCS functionalities

  • Data arbitration or voting
  • SEM control
  • Communication channel selection
  • Interlocks
  • Shutdown sequences
  • Valve signatures or profiles
  • Intelligent well control (IWIS, DHPT)
  • SIIS level 1, 2 and 3 device functionality programming
  • SPCU or EPU
  • Network monitoring and control
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