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Description
GE IC3600EPSS1B: 50V/12V Voltage Regulator Control Board for Mark II Turbine Control Systems
Product Overview
The GE IC3600EPSS1B is a high-reliability voltage regulator control board designed for GE’s Speedtronic Mark II turbine control systems, specializing in converting high-input voltages (50V DC) to a stable 12V DC output for downstream modules. As part of the IC3600 series, this module ensures precise power conditioning for critical components like logic boards, relay drivers, and sensor interfaces in gas and steam turbine applications .
Key to its functionality is the dual-channel voltage regulation circuit, which integrates electrolytic capacitors (100μF ±20% 50V), metal-oxide varistors (MOVs), and surface-mount resistors (1206 package) to mitigate voltage spikes and ripple. The board features a rugged PCB design with gold-plated 51-pin connectors and a metal enclosure, supporting operation in extreme temperatures (-40°C to +85°C) and high-vibration settings. By interfacing with Mark II backplanes, it provides redundant power distribution for turbine auxiliary systems, such as anti-surge valves and lubrication pumps .
While the GE IC3600EPSS1B is a discontinued product, refurbished units undergo rigorous thermal cycling and signal integrity tests to meet OEM standards, making it a cost-effective solution for maintaining legacy systems. Its modular design allows seamless integration with other Mark II modules like logic binary boards and relay driver cards, extending the operational lifespan of critical infrastructure .
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | GE IC3600EPSS1B |
| Manufacturer | General Electric (GE Fanuc, now Emerson Automation) |
| Product Type | Voltage Regulator Control Board |
| Compatibility | GE Mark II Speedtronic turbine control systems |
| Input Voltage | 40–50V DC (±5%) |
| Output Voltage | 12V DC (±1%) |
| Output Current | 1–10A (adjustable via trim potentiometer) |
| Output Power | 120W (maximum) |
| Ripple & Noise | ≤50mV (measured at full load) |
| Switching Frequency | 100kHz |
| Interface | 51-pin metal pin connectors for backplane integration |
| Component Layout | 2 electrolytic capacitors, 3 MOVs, 12 resistors, 4 MOSFETs |
| Operating Temperature | -40°C to +85°C (non-condensing) |
| Physical Dimensions | 134.6 mm × 130.3 mm × 25.4 mm |
| Weight | ~450 grams |
| EMI Protection | Shielded housing with ferrite beads |
Key Features and Advantages
Precision Voltage Regulation:
The GE IC3600EPSS1B employs advanced PWM (Pulse-Width Modulation) technology to maintain ±1% output voltage stability under varying load conditions. Its 100kHz switching frequency reduces passive component size while minimizing electromagnetic interference (EMI) . The board’s trim potentiometer allows field adjustment of output current, ensuring compatibility with legacy and modern loads.
The GE IC3600EPSS1B employs advanced PWM (Pulse-Width Modulation) technology to maintain ±1% output voltage stability under varying load conditions. Its 100kHz switching frequency reduces passive component size while minimizing electromagnetic interference (EMI) . The board’s trim potentiometer allows field adjustment of output current, ensuring compatibility with legacy and modern loads.
Rugged Industrial Design:
Built for harsh environments, the board features a IP20-rated metal enclosure and gold-plated connectors, minimizing signal degradation in high-humidity or corrosive settings. The PCB design includes thermal vias for efficient heat dissipation, ensuring stable performance during continuous operation .
Built for harsh environments, the board features a IP20-rated metal enclosure and gold-plated connectors, minimizing signal degradation in high-humidity or corrosive settings. The PCB design includes thermal vias for efficient heat dissipation, ensuring stable performance during continuous operation .
Cost-Effective Legacy System Support:
As a discontinued yet widely supported component, the GE IC3600EPSS1B offers a cost-efficient alternative to full system upgrades. Refurbished units undergo comprehensive testing (e.g., surge tolerance, isolation breakdown) and come with a 1–3-year warranty (depending on supplier), providing peace of mind for mission-critical applications .
As a discontinued yet widely supported component, the GE IC3600EPSS1B offers a cost-efficient alternative to full system upgrades. Refurbished units undergo comprehensive testing (e.g., surge tolerance, isolation breakdown) and come with a 1–3-year warranty (depending on supplier), providing peace of mind for mission-critical applications .
Modular Compatibility:
The board interfaces seamlessly with other Mark II modules, such as IC3600LRLB1 logic binary boards and IC3600LRDC1 relay driver boards, enabling scalable power distribution setups. This modularity simplifies maintenance and reduces spare part inventory costs .
The board interfaces seamlessly with other Mark II modules, such as IC3600LRLB1 logic binary boards and IC3600LRDC1 relay driver boards, enabling scalable power distribution setups. This modularity simplifies maintenance and reduces spare part inventory costs .
Application Areas
The GE IC3600EPSS1B is critical in industries relying on GE’s Mark II turbine control systems:
- Power Generation: Converts high-voltage DC inputs to 12V DC for turbine speed sensors, ensuring stable power output during grid synchronization. It also manages auxiliary equipment like cooling fans and lubrication pumps .
- Oil & Gas: In compressor stations, it provides regulated power to pressure sensors and anti-surge valve actuators, preventing equipment damage during process upsets .
- Industrial Manufacturing: Integrates with chemical plant control systems to power reactor pressure transmitters, enabling safe bypass valve operations during transient conditions .
- Marine Propulsion: Supports shaft position sensor data inversion in shipboard gas turbines, ensuring cooling system activation during voltage drops .
Its versatility also extends to legacy automation retrofits, where it bridges older control systems with modern PLCs or distributed control systems (DCS), minimizing downtime during upgrades .
Related Products
- GE IC3600EPSB1: DC Power Supply Board that provides 24V DC output, complementing the GE IC3600EPSS1B in multi-voltage systems .
- GE IC3600LRDC1: Logic Relay Driver Board that amplifies signals from the GE IC3600EPSS1B to drive high-power relays .
- GE IC3600LSFD1B: Logic Signal Filter and Driver Board that preconditions inputs before voltage regulation by the GE IC3600EPSS1B .
- GE IC3600SPRB1: Pulse Board that generates timing signals for synchronization with the GE IC3600EPSS1B .
- GE IC3600SIXJ1A1A: Power Supply Selector Card for redundant power management in Mark II systems .
- IS420UCSBH1A (Mark VIe): Next-generation controller offering enhanced power management and compatibility for system upgrades .
Installation and Maintenance
Installation Preparation:
- Power Down: Ensure the control system is de-energized and grounded to prevent electrostatic discharge (ESD) damage. Verify backplane compatibility with Mark II Type 3 or 4 versions .
- Physical Mounting: Secure the GE IC3600EPSS1B on a DIN rail or backplane, following GE’s wiring diagrams for pin assignments. Use shielded cables for power inputs to reduce electromagnetic interference .
- Component Check: Inspect the board for physical damage, such as swollen capacitors or burnt resistors, before installation .
Maintenance Recommendations:
- Quarterly Inspections: Check for swollen capacitors, loose solder joints, or discolored resistors. Replace electrolytic capacitors (e.g., aluminum units) if bulging or leaking .
- Annual Calibration: Validate output voltage accuracy using a precision multimeter, adjusting the trim potentiometer to maintain ±1% tolerance. This ensures consistent power regulation .
- Spare Module: Keep a refurbished GE IC3600EPSS1B in anti-static storage for hot-swapping during outages, minimizing downtime to <30 minutes .
- System Audits: Consult GE-certified technicians for periodic compatibility audits, especially when integrating with modern control systems .
Product Availability and Warranty
Refurbished GE IC3600EPSS1B modules are available from industrial automation suppliers like World of Controls and AX Control, with a 1–3-year warranty covering component defects . Suppliers provide detailed test reports (e.g., surge tolerance, isolation breakdown voltage) and 24/7 technical support for configuration issues. Delivery times typically range from 3–5 business days, with expedited shipping options for critical applications .
Note: Due to the legacy nature of Mark II systems, ensure compatibility with existing backplane versions before purchasing. For system upgrades, consider transitioning to GE Mark VIe or Emerson Ovation systems, which offer advanced power management and scalability while supporting partial retrofits .
Contact info
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