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Description
GE IC3600QOXA2: Overspeed Sensor Card for Mark I/II Turbine Control Systems
Product Overview
The GE IC3600QOXA2 is an overspeed sensor card designed for integration with GE’s Mark I and Mark II Speedtronic turbine control systems. As part of the IC3600 series, this module plays a critical role in monitoring turbine rotational speed and triggering protective actions during overspeed events. While official datasheets are limited, its functionality aligns with GE’s legacy system requirements for high-reliability industrial automation 59.
Engineered for harsh environments, the IC3600QOXA2 features a green PCB assembly with a metal-enclosed housing and EMI shielding, ensuring stable performance in high-vibration (up to 5G) and extreme temperature ranges (-40°C to +70°C). Its design includes multiple pin connectors for interfacing with power distribution modules (PDMs) and control boards, while passive components like precision resistors and capacitors support voltage regulation and signal conditioning 9.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | GE IC3600QOXA2 |
| Manufacturer | General Electric (GE Fanuc, now Emerson Automation) |
| Product Type | Overspeed Sensor Card |
| Compatibility | GE Mark I/II Speedtronic turbine control systems |
| Input Voltage | 28V DC (system-dependent) |
| Signal Processing | Analog-digital circuit with voltage scaling (e.g., 5–8V DC output) |
| Isolation | 2500Vrms between input/output channels |
| Physical Dimensions | ~178 mm × 102 mm × 51 mm (DIN rail-mountable enclosure) |
| Weight | ~0.6 kg |
| Operating Temperature | -40°C to +70°C (non-condensing) |
| Mounting | 35 mm DIN rail |
| Response Time | <50 ms (overspeed detection to relay actuation) |
Key Features and Advantages
Overspeed Detection and Protection:
The IC3600QOXA2 continuously monitors turbine speed through dedicated sensor inputs, converting raw analog signals into scaled DC outputs (e.g., 5–8V DC) for transmission to the system’s analog-to-digital converters (e.g., GE IC3600HAIC1B). Its precision resistors and capacitors ensure ±0.1% signal accuracy, critical for triggering emergency shutdowns or reducing fuel supply during overspeed conditions 9.
The IC3600QOXA2 continuously monitors turbine speed through dedicated sensor inputs, converting raw analog signals into scaled DC outputs (e.g., 5–8V DC) for transmission to the system’s analog-to-digital converters (e.g., GE IC3600HAIC1B). Its precision resistors and capacitors ensure ±0.1% signal accuracy, critical for triggering emergency shutdowns or reducing fuel supply during overspeed conditions 9.
Integrated Logic Control:
Equipped with discrete logic circuits and a 28V DC relay (labeled “CR120G40A06FB”), the IC3600QOXA2 executes control algorithms to manage power redundancy and fault isolation. For example, it interfaces with power supply selector cards (e.g., GE IC3600SIXJ1A1A) to switch between primary/backup 125V DC sources during outages, ensuring uninterrupted operation of critical components like anti-surge valves in oil & gas applications 9.
Equipped with discrete logic circuits and a 28V DC relay (labeled “CR120G40A06FB”), the IC3600QOXA2 executes control algorithms to manage power redundancy and fault isolation. For example, it interfaces with power supply selector cards (e.g., GE IC3600SIXJ1A1A) to switch between primary/backup 125V DC sources during outages, ensuring uninterrupted operation of critical components like anti-surge valves in oil & gas applications 9.
Rugged Industrial Design:
The module’s metal enclosure and strain-relieved wiring protect against mechanical stress and ESD damage. Its modular PCB design allows component-level repairs, such as replacing the 200V capacitor or resoldering corroded terminals, reducing downtime during maintenance. LED indicators (green for power, red for fault) provide real-time status feedback, streamlining troubleshooting 9.
The module’s metal enclosure and strain-relieved wiring protect against mechanical stress and ESD damage. Its modular PCB design allows component-level repairs, such as replacing the 200V capacitor or resoldering corroded terminals, reducing downtime during maintenance. LED indicators (green for power, red for fault) provide real-time status feedback, streamlining troubleshooting 9.
Legacy System Compatibility:
As a discontinued yet widely supported component, the IC3600QOXA2 offers cost-effective maintenance for Mark I/II systems. Refurbished units undergo rigorous testing (thermal cycling, signal integrity checks) to meet OEM standards, extending system lifespans by up to a decade. This makes it ideal for power plants and industrial facilities prioritizing reliability over full-system upgrades 59.
As a discontinued yet widely supported component, the IC3600QOXA2 offers cost-effective maintenance for Mark I/II systems. Refurbished units undergo rigorous testing (thermal cycling, signal integrity checks) to meet OEM standards, extending system lifespans by up to a decade. This makes it ideal for power plants and industrial facilities prioritizing reliability over full-system upgrades 59.
Application Areas
The IC3600QOXA2 is critical in industries relying on GE’s Mark I/II turbine control systems:
- Power Generation: Monitors turbine shaft speed for governor controls, triggering alarms and shutdowns during overspeed events. Its fast response time (<50 ms) prevents turbine damage from excessive RPM.
- Oil & Gas: Deployed in compressor stations to stabilize power for field devices (e.g., pressure transmitters) and activate fail-safe relays during voltage fluctuations.
- Industrial Manufacturing: Integrates with chemical plant control systems to monitor power distribution for reactor bypass valves and pump interlocks.
- Marine Propulsion: Monitors shaft position sensor power in shipboard gas turbines, enabling cooling system activation during transient voltage drops.
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Installation and Maintenance
Installation Preparation:
- Power down the control system and ground the cabinet to prevent ESD damage. Mount the IC3600QOXA2 on a 35 mm DIN rail, ensuring 50 mm clearance for heat dissipation.
- Connect shielded cables to rear connectors (e.g., pin headers for analog inputs/outputs), following GE’s wiring diagram to avoid cross-circuiting. Verify input voltage compatibility (28V DC) before power-up 9.
Maintenance Recommendations:
- Quarterly Inspections: Check for swollen capacitors, loose solder joints, or discolored resistors. Replace the 200V capacitor (708A1) if bulging or leaking.
- Annual Calibration: Use a precision multimeter to validate voltage scaling accuracy, adjusting potentiometers to ensure readings align within ±0.1% tolerance.
- Spare Module: Keep a refurbished IC3600QOXA2 in anti-static storage for hot-swapping during outages, reducing downtime to <30 minutes.
Product Availability and Warranty
Refurbished IC3600QOXA2 modules are available from industrial automation suppliers like AxControl and World of Controls, with a 1–3 year warranty covering component defects. Suppliers provide detailed test reports (e.g., voltage tolerance, isolation breakdown voltage) and 24/7 technical support for configuration issues. Delivery times range from 1–5 business days, with expedited shipping options for critical applications 59.
Note: Due to the legacy nature of Mark I/II systems, ensure compatibility with existing backplane versions (e.g., Mark I Type 3 or Mark II Type 4) before purchasing. Contact GE-certified service centers for system compatibility audits.
HS:7326909000
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