Woodward 5437-1119 ProTech‑GII Redundant Spare Module

Key Features

Plug‑and‑Play Redundancy: Fully pre‑configured to match host system parameters; no re‑programming needed for hot swap. Automatically synchronizes speed data, trip setpoints, and alarm logic with primary modules.
TMR Voting Logic Compatibility: Integrates into 2‑out‑of‑3 voting architecture to avoid false trips and ensure trip reliability if a primary module fails.
On‑Line Maintainability: Hot‑swappable design allows replacement while the turbine is running, eliminating safety system downtime during module failure.
Shared System Status: Exchanges real‑time speed, trip latch, and alarm status with all modules (A/B/C) for consistent monitoring and event logging.
MPU & Speed Fault Handling: Supports MPU open‑wire/loss‑of‑speed detection and speed difference alarms to validate sensor health during operation.
Event Logging & Diagnostics: Equipped with a real‑time clock for time‑stamped trip/alarm logs; synchronizes with other modules for consistent time‑averaging and post‑incident analysis.
Sulfur‑Resistant Coating: Uses a conformal coating to protect against H₂S/SO₂ gases (IEC 721‑3‑3 Class 3C2), suitable for petrochemical/offshore environments.

Category: Woodward

Description

Technical Specifications

Parameter	Details
Module Type	ProTech‑GII redundant spare module (TMR‑compatible)
Compatible Systems	8237‑1226 Rev D and later, 8237‑1369 ProTech‑GII voting relay panels
Power Supply	Matches host system: 88–132 Vac (12.5 VA) or 90–150 Vdc (4.77 W) (de‑energize‑to‑trip)
Operating Temperature	-25°C to 60°C (-13°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Speed Sensing Compatibility	3 independent channels, works with active/passive magnetic pickups (MPUs), 20–120 teeth programmable
Voting Logic Integration	2‑out‑of‑3 hardware voting (seamless with host system trip relays)
Front‑Panel Interface	Dual‑line 16‑character LCD, status LEDs, touchpad for configuration & monitoring
Communication Protocol	Modbus RTU (RS485) for status reporting and data logging
Physical Form Factor	Panel/bulkhead mount, matches ProTech‑GII standard module dimensions (19 in × 12.244 in × 5.62 in)
Weight	≤17 lb (7.71 kg) (same as primary ProTech‑GII modules)
Compliance	NEMA 4/IP54 (front panel), EMI/EMC industrial standards, IEC 721‑3‑3 sulfur contamination resistance

Functional Integration

Automatic Failover: Detects primary module failure via cross‑module status checks and assumes active monitoring within milliseconds.
Shared I/O Management: Reads start/reset/speed‑failed override commands from any module (OR‑logic configured) for consistent discrete input handling.
Overspeed Test Compatibility: Supports routine overspeed testing (internal frequency generator simulation) and logs results for compliance validation.
Speed Range Support: Configurable 250–80,000 rpm (max frequency 32 kHz) to accommodate turbines and turboexpanders.
Acceleration Protection: Compatible with host system’s configurable overacceleration trip logic (low‑pass filter for acceleration signal).

Application Scenarios

Steam/Gas/Hydro Turbines: Backup for overspeed protection in power plants, refineries, and hydroelectric facilities to prevent catastrophic rotor damage.
Marine Propulsion: Redundant safety for shipboard main propulsion turbines, complying with marine safety regulations.
Offshore & Petrochemical Plants: Spare for ATEX‑rated ProTech‑GII systems in Zone 2 hazardous areas (e.g., offshore platforms, LNG plants).
Critical Rotating Machinery: Used in turboexpanders, large compressors, and generators where unplanned shutdowns have severe operational/financial impacts.
TMR Retrofit Projects: Adds redundancy to legacy ProTech‑GII installations, upgrading availability without full system replacement.
High‑Availability Power Generation: Backup for combined heat and power (CHP) plants and emergency generator sets to ensure continuous protection during load transients.

Configuration & Maintenance

Setup: Pre‑configured to mirror host module parameters; no manual programming required for initial deployment.
Hot Swap Procedure: Can be replaced while the system operates—simply remove the failed module and insert the 5437‑1119; the system auto‑recognizes and syncs it.
Security: Password‑protected access prevents unauthorized changes to trip setpoints and voting logic.
Fault Monitoring: Alerts on module communication loss, MPU failure, or power anomalies; logs all events for compliance reporting.
Calibration: Matches host system calibration for speed accuracy (±0.05% of rated speed) and acceleration detection thresholds.

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