Product Overview

The GE IS200SRLYH2AAA functions as a high-density Simplex Relay Output Terminal Board for the Mark VI and Mark VIe Speedtronic turbine control systems. This 100% Brand New PCB serves as the hardware bridge between digital control logic and heavy-duty field equipment. It manages the switching operations for critical turbine auxiliary systems, including solenoids, motor starters, and remote alarm interlocks. By utilizing a Simplex architecture, this board provides a cost-effective and space-efficient solution for non-redundant signal paths without sacrificing industrial-grade durability.

Technical Specifications

Engineering Advantages

• Robust Galvanic Isolation: The IS200SRLYH2AAA provides a physical barrier between the field-side electrical noise and the sensitive control backplane. This isolation prevents surges from the field (such as inductive kickback from solenoids) from damaging the core CPU or logic modules.

• High-Density Switching: With 12 independent relay channels on a single board, this module optimizes cabinet space. It allows engineers to manage multiple auxiliary systems from one terminal location, simplifying wiring and reducing the total hardware footprint.

• Extreme Environmental Resilience: Engineered for power plant conditions, the board operates reliably in temperatures as low as –40 °C and as high as +70 °C. The high-grade protective coating prevents circuit degradation caused by humidity, dust, or airborne contaminants.

• Pilot Duty Reliability: The mechanical contacts specifically handle the inrush currents typical of contactors and solenoids. This capability eliminates the need for external interposing relays in many standard turbine control applications.

• Seamless Integration: The board interfaces directly with Mark VI/VIe I/O packs, utilizing standard GE high-density cabling to ensure rapid installation and low-latency response times.

FAQs

• What is the difference between Simplex and TMR relay boards?

• The IS200SRLYH2AAA uses Simplex architecture, meaning it handles non-redundant signals through a single path. In contrast, TMR (Triple Modular Redundant) boards use three parallel paths for voting logic in ultra-critical safety systems. Use this Simplex board for auxiliary systems where space and efficiency are priorities.

• Does this board support both 115VAC and 230VAC simultaneously?

• Yes. Because the relays provide isolated dry contacts, you can wire different voltages to separate channels on the board, provided you maintain proper clearance and follow the terminal board’s maximum voltage ratings.

• Is any manual calibration required for the IS200SRLYH2AAA?

• No. This terminal board is a passive electromechanical interface. Once mounted and connected to the appropriate I/O module via the high-density cables, it requires no software calibration or manual adjustments.

• Can I replace an older SRLY board with this "H2AAA" version?

• The "H2AAA" version is a modern revision of the SRLY series. While it maintains backward compatibility with most Mark VI applications, always check your specific system drawing or I/O configuration software to ensure the terminal assignments match your existing wiring.