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Product Introduction
The GE IS200PDIOH1A is a Digital/Discrete I/O Protection Board designed for integration within the GE Speedtronic Mark VI / Mark VIe turbine control systems. It serves as a critical interface that processes discrete digital I/O signals (e.g. trip contacts, interlocks) related to turbine protection logic.
This board connects to terminal blocks and communicates via the IONet backplane (through the VCMI module), enabling fast, deterministic exchange of status and control signals. It is typically used in redundancy-critical protection systems—such as emergency trip logic—where accurate digital signal handling and high reliability are essential for safe turbine operation.
Product Specifications
| Parameter | Description |
|---|---|
| Model | IS200PDIOH1A |
| Part Number | IS200PDIOH1A |
| Function | Turbine Protection Discrete I/O Interface |
| Input Types | Digital discrete inputs (trip, status contacts) |
| Output Types | Digital discrete outputs (alarms, trip enable) |
| Channel Count | Up to 16 input/output channels (depending on installed terminal boards) |
| Signal Type | TTL / contact closure discrete logic signals |
| Isolation | Channel-to-ground isolation |
| Diagnostics | Fault detection, logic integrity checking |
| Redundancy Support | Yes; supports redundant input logic paths |
| Communication Interface | IONet via VCMI module |
| System Compatibility | GE Mark VI and Mark VIe |
| Mount Type | VME rack-mounted card |
| Hot-Swap Capability | No (requires system shutdown) |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | −40 °C to +85 °C |
| Humidity Range | 5% to 95% RH, non-condensing |
| PCB Coating | Standard conformal coating |
| Dimensions (W × H × D) | 127 x 127 x 132 mm |
| Weight | 0.4 kg |
| Certifications | CE, UL, RoHS compliant |
Product Applications
The IS200PDIOH1A Protection Board is commonly deployed in mission-critical protection systems across turbine control platforms. Typical uses include:
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Emergency Trip Logic: Receiving and processing redundancy trip contact closures during overspeed or fault conditions.
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Protection Interlocks: Monitoring discrete signals from vibration sensors, overspeed detectors, or fire shutdown circuits.
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Alarm and Status Reporting: Driving discrete output signals to instrumentation annunciators or backup systems.
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Safety Instrumented Functions: Operating as part of redundant safety loops for turbine or generator protection.
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Balance of Plant Integration: Handling plant-level interlocks relative to auxiliary equipment via discrete I/O.
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SCADA/DCS Integration: Feeding discrete statuses into supervisory systems for monitoring and control.
Product Advantages
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Fast Digital I/O Processing: Ensures rapid detection and communication of discrete protection signals.
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Redundancy‑Ready Design: Supports dual-path logic for fault tolerance in critical shutdown circuits.
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Robust Isolation: Protects against signal interference, ground loops, and noise in industrial environments.
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Integrated Diagnostics: Detects wiring faults, signal inversion, and logic discrepancies for preventive maintenance.
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Seamless System Integration: Engineered for compatibility with GE Mark VI/VIe IONet architecture.
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Modular Architecture: Enables flexible system configuration by combining discrete I/O boards and terminal boards.
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Reliable Performance: Built to withstand vibration, temperature fluctuations, and high humidity environments.
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Simplified Serviceability: Clear interface and fault indicators reduce diagnostic time.
Frequently Asked Questions (FAQ)
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What discrete signal types are supported by IS200PDIOH1A?
Inputs accept contact closures, high/low logic; outputs drive discrete alarms or enable signals. -
Does the board provide channel isolation?
Yes, channel-to-ground isolation is provided; channel-to-channel isolation depends on the chassis layout. -
Can this board operate in a redundant safety configuration?
Yes, it supports redundant trip logic and dual-path discrete signal processing. -
How are faults or logic errors reported?
Built-in diagnostics flag faults via VCMI communication to the controller and can drive LED indicators on terminal boards. -
Is this board hot-swappable?
No. It requires system shutdown for installation or removal. -
Which communication protocol is used?
Discrete I/O and diagnostics are sent over IONet via the VCMI card in the controller rack. -
Does it support both input and output channels?
Yes – it handles discrete inputs (e.g., contact closures) and outputs (e.g., alarm/enabling signals). -
What terminal boards are typically used with IS200PDIOH1A?
Compatible terminal boards include discrete input and relay output terminal boards (e.g., IS200STCIH series). -
Is wiring-to-terminal board mapping verified?
Yes—diagnostic checks verify terminal board IDs, wiring integrity, and logic consistency. -
Can it be used in non-turbine industrial systems?
While optimized for GE Mark VI/VIe, it may be adapted to other discrete safety logic environments with custom integration.
Related Models (Same Series or Similar Function)
| Model | Part Number | Function | Type | System Compatibility |
|---|---|---|---|---|
| IS200STCIH1ADD | GE terminal board | Discrete Input Terminal Board | Digital Input Board | GE Mark VI/VIe |
| IS200TRLYH1B | GE relay output | Relay Output Board | Discrete Output Module | GE Mark VI/VIe |
| IS200TREGH1B | GE trip relay board | Emergency Trip Relay Board | Safety Output Board | GE Mark VI/VIe |
| IS200PAICH1B | GE analog input | Analog Input Conditioning Board | Analog Protection Module | GE Mark VI/VIe |
| IS200PAOCH1B | GE analog output | Analog Output Board | Analog Protection Module | GE Mark VI/VIe |
| IS200DSPXH1D | GE signal processor | Digital Signal Processing Board | Processing Module | GE Mark VI |
Popular GE Models
| Model | Part Number | Function | Type | System Compatibility |
|---|---|---|---|---|
| IS215VCMIH2C | Communication card | VME Communication Interface Module | VCMI Communication Module | GE Mark VI/VIe |
| IS200SPROH2A | Protection board | Emergency Protection Terminal Board | Trip Logic Terminal Board | GE Mark VIe |
| IS200STAIH2ACB | Analog input board | Analog Input Terminal Board | Analog Input Module | GE Mark VI/VIe |
| IS200TTVBAH2A | Vibration board | Vibration Input Terminal Board | Sensor Input Module | GE Mark VI |
| IS200EPSMG1A | Exciter power supply | Exciter Power Supply Module | Power Supply | GE Mark VI |
| IS200DVOPKH1AAA | Digital I/O board | Digital Voltage Output Panel | Output Logic Board | GE Mark VI |
