Description
Product Overview
The Woodward 8290-194 is a certified safety-rated overspeed protection system designed for mission-critical turbomachinery in power generation, oil & gas, and industrial applications. As part of Woodward’s 8000 series of safety solutions, this TÜV-certified SIL 3 module provides triple-redundant overspeed detection with <2ms response time, meeting API 670 5th Edition requirements for machinery protection. The 8290-194 features independent voting processors with diverse algorithms, ensuring 99.9999% reliability in preventing catastrophic turbine failures. Its stainless steel IP68 enclosure withstands extreme environments (-40°C to +85°C, 15G vibration), while fiber-optic isolated I/O provides noise immunity in electrically harsh installations. With predictive analytics and cyber-secure communications, the Woodward 8290-194 sets the industry standard for turbomachinery protection.
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 8290-194 |
| Manufacturer | Woodward |
| Product Type | Overspeed Protection System |
| Safety Rating | SIL 3 (IEC 61508), API 670 5th Ed |
| Architecture | Triple-redundant 2oo3 voting |
| Speed Inputs | 3× MPU (1-50kHz), 1× Backup (OPT) |
| Response Time | <2ms (trip output) |
| Accuracy | ±0.02% of setpoint |
| Output Relays | 4× Form-C (5A, 250V AC) |
| Communication | RS-485 Modbus, Ethernet/IP (OPT) |
| Diagnostic Coverage | >99% (per IEC 62061) |
| Power Supply | 24V DC (18-36V) redundant |
| Operating Temp. | -40°C to +85°C |
| Vibration Resistance | 15G (10-2000Hz) |
| Protection Rating | IP68 (NEMA 6P) |
| Certifications | TÜV, DNV-GL, ATEX Zone 2 |
WOODWARD 8290-194
Main Features and Advantages
Diverse redundancy architecture: The Woodward 8290-194 employs three independent measurement channels using different algorithms (frequency counting, period measurement, and digital filtering) with 2oo3 voting logic, eliminating common-cause failures.
Ultra-fast protection: Hardware-based FPGA trip logic guarantees <2ms response from overspeed detection to relay actuation, faster than mechanical overspeed bolts. Dual-level voting (sensor and processor redundancy) meets API 670 worst-case failure scenarios.
Advanced condition monitoring: Built-in vibration spectrum analysis (0-25kHz) via speed sensor inputs detects developing mechanical issues. The 8290-194 provides ISO 13374-3 compliant gear mesh analysis and bearing wear trending.
Cybersecurity hardened: Implements IEC 62443 requirements including secure boot, signed firmware updates, and role-based access control. The physical trip bypass switch maintains safety during cyber maintenance.
WOODWARD 8290-194
Application Field
The Woodward 8290-194 protects critical rotating equipment:
Gas/Steam Turbines: Overspeed protection up to 30,000 RPM
Compressor Trains: HIPPS integration for pipeline systems
Aeroderivatives: Flight-certified protection for mobile units
Hydroelectric: Overspeed during load rejection
Marine Propulsion: Redundant protection for naval vessels
Related Products
8290-195: Version with IEC 61850 GOOSE messaging
8290-193: Basic version without diagnostics
ProAct SIS: Safety instrumented system integration
MPU-5000: Triple-redundant speed sensors
TSR-8000: Test signal generator
Installation and Maintenance
Pre-installation preparation: Verify sensor air gaps (0.5-1.5mm typical). Implement separate conduit for safety and non-safety wiring. Configure independent power supplies for each channel.
Maintenance recommendations: Perform quarterly trip tests via Woodward’s SafeTest™ software. Replace electrolytic capacitors every 10 years. The 8290-194 features self-diagnostic trip circuit verification before each start.
Product Guarantee
Woodward’s 20-year lifecycle commitment includes:
10-year warranty with SIL 3 recertification
TÜV-validated firmware updates
NIST-traceable calibration (3-year intervals)
24/7 emergency support (1-hour response)
Lifetime cybersecurity monitoring
Each unit undergoes:
5,000-hour burn-in with fault injection
EMC testing per IEC 61000-6-2/6-4
Mechanical shock testing to 50G
