Woodward MicroNet TMR Triple Modular Redundant Controller Control System

MicroNet TMR® (Triple Modular Redundancy) controllers are state-of-the-art digital control platforms designed to reliably control and protect steam turbines, gas turbines and compressor packages.

These units are used in critical system applications where there is a risk of safety issues or significant economic loss.

The MicroNet TMR®'s "2-out-of-3" voting structure ensures that problems are responded to correctly and that prime movers continue to operate safely with or without any single point of failure.

The controller's robustness, fault tolerance, accuracy and availability make it the first choice for turbine and compressor OEMs and operators worldwide.

The superior architecture and diagnostic coverage of the MicroNet TMR® results in 99.999% system availability and reliability.The MicroNet TMR® can be

MicroNet TMR® can be used as a component of a protection and safety system, making the entire system compliant with IEC61508 SIL-3. IEC61508 calculation and application assistance.

 Typical MicroNet TMR® application experience and use:

 Refrigeration compressors (ethylene, propylene)

 Methane and Syngas Compressors

 Gas Cracking Compressors

 Gas charging compressors

 Hydrogen Recovery Compressors

 Critical turbine generator sets

 Turbine Safety Systems

For IEC61508 SIL-3 based applications, MicroNet systems require a MicroNet Safety Module (MSM).

The MSM serves as the system's SIL-3 logic solver, and its fast (12 ms) response time and integrated overspeed and acceleration detection/protection make it ideal for critical high-speed rotating motor, compressor, turbine or engine applications.

Description

The MicroNet TMR® control platform features a ruggedized rackmount chassis with in-line replaceable I/O modules and triple modular architecture for 99.999% availability.

This triple modular redundancy-based system consists of three independent cores (A, B, and C) housed in the platform's compact chassis.

Each core section includes its own CPU, CPU power supply, and up to four I/O modules, which can be used for simplex I/O, redundant I/O, triple redundant I/O, or any combination of redundancy.

I/O can be expanded via a system expansion chassis or the ruggedized LinkNet HT Distributed I/O.

The platform's high-density modules and integrated application software reduce troubleshooting time by providing first-out indication of monitored system events.

These specialized modules can time stamp discrete events in 1 millisecond and analog events in 5 milliseconds.

The MicroNet TMR® utilizes two power supplies, each supplying power to the controller from a separate power source. Within each power supply are three independent power converters, one each for the CPU and I/O sections.

This triple power supply structure provides maximum protection against single or multiple points of hardware failure.

The controller's dedicated TMR® Discrete I/O Module is designed for critical discrete circuits.

The module accepts discrete inputs and distributes them to each individual core section, as well as outputs relay contacts to drive discrete application logic.

The module's special TMR® outputs utilize a six-relay configuration and integrated potential fault detection logic that allows any one or two relays to fail without affecting the integrity of the output contacts.

This configuration allows routine relay testing and in-circuit repair without compromising output or system integrity.

Designed from the ground up as a turbine control system, the MicroNet TMR® controller's actuator drive module is available with the use of single or dual redundant coils,

Proportional or integral turbine valve servos with AC or DC feedback position sensors using single or dual redundant coils.

The MicroNet TMR® controller can accommodate any combination of Woodward MicroNet I/O modules and LinkNet HT distributed I/O to provide maximum application flexibility.

Available inputs and outputs include

 Magnetic pickups (MPUs) and proximity probes

 Discrete I/O

 Analog inputs/outputs

 Thermocouple inputs

 Resistance Temperature Devices (RTD)

 Proportional and integrated actuator drives (integrated AC and DC position inputs)

 Ethernet and serial communications

 Distributed analog, discrete, thermocouple and RTD I/O available with LinkNet HT

Woodward's MicroNet TMR (Triple Modular Redundancy) controller is a customizable digital control platform that reliably controls and protects steam, gas turbine and compressor trains.

These are system-critical applications where safety issues can arise or cause significant economic loss.

MicroNet TMR features include:

IEC61508 SIL-3 certified

Network-safe CPUs

Simplex or redundant CPU configurations

VME-based (full and narrow chassis)

Real-time multitasking VxWorks® operating system

Woodward's proven Graphical Application Programmer (GAP) software and support tools

Deterministic update rates as fast as 5 milliseconds

Improves control system availability and reliability

SNTP-compliant for time synchronization

Expandable with redundant real-time networks in CAT-5 or fiber optic configurations

Ethernet communications

Simplex or dual power

Modular I/O

Events are timestamped to 1 millisecond

Hot-swap modules for in-line maintenance

MicroNet TMR features include:

Speed and load control

Temperature and process control

Combustion control

Anti-surge control

System sequencing and package assist control

Tight load rejection performance

Sophisticated DLE fuel control algorithms

Initial surge detection

Long-term naval program

Alarm + shutdown communications

Operating Conditions:

Temperature (0 to 55) °C / (32 to 131) °F Ambient Air Temperature Range

Shock US MIL-STD-810C, Method 516.2-1. Procedure 1B

Vibration Lloyd's ENV2 Test #1

Emissions * EN61000-6-4

Immunity * EN61000-6-2

Achilles Level 1 Certification

Certifications * CE, UL/cUL, CSA (Class I, Zone 2), LR for ENV1 and ENV2. ABS, GOST

Other international compliance (using MicroNet safety modules) TÜV certified to IEC 61508 Part 1-7. Functional Safety of Electrical/Electronic/Programmable Systems, Electronic Safety-Related Systems

Configuration:

MicroNet TMR Chassis - 18-slot chassis

Mounting Bulkhead mounted or adapts to 483 mm (19 in.) rack mount rear panel

Control chassis dimensions: 478 mm W x 363 mm H x 307 mm D (18.8 in. W x 14.3 in. H x 12.1 in. D)

Control chassis weight 25 kg (55 lbs)

Power chassis dimensions: 163 mm W x 363 mm H x 307 mm D (6.4 in W x 14.3 in H x 12.1 in D)

Power chassis weight: 7 kg (16 lbs)

Power Input Options (18 to 36) Vdc, (100 to 150) Vdc, (88 to 132) Vac / (47 to 63) Hz, (180 to 264) Vac / (47 to 63) Hz