ABB UCD240A101 Control, Communication and Measurement Board
• Safety Shutdown• Electrical Stability and Load Control
• Process Shutdown
• Reactor Control
• Emergency Shutdown
• Critical Batch Processing
• Sequence and Interlock Control
• Fire & Gas Protection and Detection
• Critical Process Control
• Burner Management and Control
• Turbine and Compressor Control
• Wellhead/Sub-Sea Control
• Unmanned Installations
• FPSOs
The ABB Triguard SC300E TMR product family gives unrivalled performance in areas of reliability, availability, test coverage,
diagnostics and simplicity of operation. Advances in technology and improved production methods add cost benefits that
give significant price/performance advantages.
• Fewer unscheduled stoppages
highest availability, fault tolerant electronics with transient immunity and 3–2–0 or 3–2–1–0 voting
• Security for plant, product and people
fail-safe operation at all levels provides plant, product and personnel with the highest security
• Quality data
sequence of event and extensive diagnostics keep the operator informed

Highest Availability
The Triguard SC300E achieves the
highest possible TMR availability
(99.999%) by maximising the
Mean Time To Failure (MTTF) and
decreasing the Mean Time To Repair
(MTTR).
Modern low power integrated
technology allows the TMR
architecture to be cost effective for
an increasing range of high integrity
applications.
Simple to Use, Operate
and Maintain
The Triguard SC300E TMR product
functions as a single set of hardware
and software. The three processors
and triplicated I/O circuitry are
transparent to the user. Purchasing a
Triguard SC300E system will provide:
• Lowest Life Cycle Cost
• The Maximum Safety and
Availability
• The Highest Level of Safety and
On-Line Maintenance
Fail Safe Operation
Failure modes of the processors,
input/output circuitry, control program
and watchdog timer circuits are
managed so that circuits will default to
a predetermined safe state.
Highest Speed of Response
By using advanced processor
technology, whilst maintaining the
stability of the original core software,
Triguard SC300E delivers an
unrivalled scan time resolution
of 10ms.