Typical Machinery ICS Triplex T8442 Trusted TMR Speed Monitor AB Rockwell

Product:ICS Triplex T8442

Trusted TMR Speed Monitor AB Rockwell in good quality

The Trusted® T8442 TMR Speed Monitor monitors the shaft speed and acceleration of rotating machinery. It provides machine protection for over-speed and over-acceleration shutdown functions. Typical machinery applications include steam and gas turbines driving pumps, compressors and generators. A T8442 Speed Monitor Module within a Trusted System provides the capability to perform turbine speed control independent of the machinery protection functions.

System response times are often critical for these types of application. To minimise processing delays the T8442 operates as a self-contained fault tolerant control sub-system within the Trusted System environment.

Each T8442 has three monitoring and control groups. Each group provides the Speed Monitoring and shutdown control facilities required for one rotating machine. Up to three turbine trains can be handled by a single T8442. A single rotating machine group comprises of three separate Triple Modular Redundant (TMR) speed input channels and two separate quad redundant, fault tolerant output drive structures. Turbines having more than three speed pickups can be accommodated by combining monitoring and control groups.

Features:

• Three rotating machine groups. Trusted PD-T8442 Rockwell Automation Publication PD-T8442 Issue 9

• Three Triple Module Redundant (TMR) speed inputs per rotating machine group.

• Active or passive probe speed inputs.

• Two quad redundant, fault tolerant, volt-free shutdown control output structures per rotating machine group.

• 2500 V impulse withstand opto/galvanic isolation barrier.

• Galvanic isolation between field Inputs/Outputs.

• On-board Sequence of Events (SOE) reporting with 1 ms resolution.

• Hot standby module configurations using companion slot.

• Hardware Implemented Fault Tolerance (HIFT).

• Front panel status LEDs indicate module health, operating mode and rotating machine group Input/Output status. Comprehensive automatic diagnostics and self-test.

• TϋV Certified IEC 61508 SIL 3.

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