GE Electric | IS230TNRLH1B | (TMR) Trip Relay Logic Module
IS230TNRLH1B Product Overview
Functional Description:
The GE IS230TNRLH1B is a Triple Modular Redundant (TMR) Trip Relay Logic Module for the Mark VIe Safety Overspeed Protection System. It executes critical turbine trip logic (e.g., overspeed, vibration, temperature) with three parallel processors, enabling SIL 3-certified fail-safe shutdowns through redundant relay outputs.
Key Parameters & Specifications
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Parameter
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Specification
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|---|---|
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Part Number
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IS230TNRLH1B
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Series
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Mark VIe Safety System (SIL 3)
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Function
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TMR Trip Logic & Relay Output
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Processor Cores
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3x 32-bit PowerPC (cross-monitored)
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I/O Channels
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16 DI (24V DC isolated), 8 DO (relay)
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Trip Relays
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8x Form-C (5A @ 30V DC / 250V AC)
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Response Time
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<20 ms (trip signal detection)
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Safety Rating
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SIL 3 (IEC 61508/61511)
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Communication
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100 Mbps Ethernet (to controller), Fiber-Optic (optional)
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Power Supply
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+24V DC ±10%, 1.5A (dual-redundant inputs)
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Operating Temp.
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-40°C to +70°C
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Vibration Resistance
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5g (10–500 Hz)
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Mounting
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VME Rack (compatible with IS200/IS215 frames)
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Certifications
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TÜV Rheinland SIL 3, ATEX Zone 2, UL 508
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Product Series
- Core component of Mark VIe TMR Safety Series (paired with IS230TBTCH1B test module).
Key Features
- TMR Architecture: 3 independent processors for vote-based fault tolerance (2-out-of-3 decision).
- Watchdog Timers: Auto-trip if processor disagreement > 5µs.
- Hardware Diagnostics: Continuous self-test of CPU, memory, I/O.
- Fiber-Optic Isolation: Optional ST connectors for noise-immune communication.
- LED Status Matrix: Per-channel health indication (green/yellow/red).
- Non-Volatile Logging: Stores 500+ trip events with timestamps.
Functions & Roles
- Overspeed Protection: Interlocks with magnetic pickup sensors (MPUs).
- Trip Logic Execution: AND/OR voting for permissive/shutdown sequences.
- Redundant Relay Control: Drives solenoid valves, breakers, and alarms.
- Fault Reporting: Communicates diagnostics to ToolboxST™ via Ethernet.
- Manual Test Interface: Supports IS230TBTCH1B test module for validation.
Applications & Use Cases
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Industry
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Application
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|---|---|
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Power Generation
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Gas/steam turbine overspeed protection (≥300 MW)
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Aeroderivatives
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Jet engine-derived turbine emergency shutdown
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Nuclear
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Backup safety system for reactor coolant pumps
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Petrochemical
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High-integrity compressor surge prevention
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Marine Propulsion
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Naval vessel turbine trip safety
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Documentation & Support
- Manual: GEH-6850 Vol. III (Mark VIe Safety Systems)
| Software Tools | Firmware Requirements |
|————————-|—————————-|
| GE ToolboxST™ Safety | Min. V06.09 |
| Cimplicity™ Logic Developer | FPGA Rev 2.3+ | - Compatible Controllers:
- IS200ERSCG2AED (Mark VIe rack)
- IS215UCVEH2AE (Mark VIeS)
Critical Notes:
- Relay Ratings: Max 5A resistive; inductive loads require snubbers.
- Redundancy Rules: Requires ≥2 modules for SIL 3 compliance.
- Power Isolation: Dual supplies must be separately sourced (no common ground).
- Obsolescence: Part of legacy Mark VIe; migrate to Mark VIeS for future support.
- Fiber-Optic Use: Requires IS200FIBxx transceiver module.
- Do Not Use: For non-safety functions (use IS220PDIAH1B instead).
Testing Protocol: Annual full trip test per GEI-100520.
Warning: Bypassing watchdog timers voids SIL 3 certification.
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