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IC3600LIVA1A - Logic Inverter Board is available in stock which ships the same day.
IC3600LIVA1A - Logic Inverter Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: IC3600LIVA1A
Manufacturer: General Electric (GE)
Series: Speedtronic Mark I & II
Product Type: Logic Inverter Printed Circuit Board
Number of Inputs: 8 Channels
Accuracy: 0.25% at 25 °C
Operating Modes: Current Mode or Voltage Mode
Input Data: 16-bit Input Data
Update Rate: 13 ms (all channels)
Backplane Current: 15 mA at 5V / 120 mA at 3.3V
Voltage Range: -10 to 10 Volts DC
Resolution (0-20 mA): 5 microamps
Input Impedance: 250 Ohms
Weight: 1.5 kg
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
The IC3600LIVA1A is a Logic Inverter Printed Circuit Board developed as a core component of the GE Mark I and Mark II Speedtronic Gas Turbine Control Systems. In the landscape of early-generation Speedtronic hardware, where reliability was achieved through hardwired modular logic, this board serves as a critical decision-making element. Its primary role is to receive digital input signals and output their logical inverse, effectively converting high-level digital states into low-level complements. This inversion logic is vital for executing complex turbine sequences, such as establishing safety interlocks, controlling solenoid-driven fuel valves, and managing conditional outputs during critical startup and shutdown phases.
SIGNAL INVERSION & TTL ARCHITECTURE
The Logic Inverter Printed Circuit Board utilizes Transistor-Transistor Logic (TTL) circuits configured in high-speed NOT-gate arrangements. These electronic components, predominantly NPN transistors, process input signals with minimal propagation delay. This ensures deterministic behavior in real-time control environments where timing accuracy is paramount. By converting a logical 1 (typically +5V DC) to a logical 0 (0V), the board provides the necessary signal conditioning for protective logic strings that depend on the complementary state of input signals to initiate or block specific turbine operations.
MODULAR INSTALLATION & RACK INTERFACE
The Logic Inverter Printed Circuit Board features a card-edge connector with gold-plated contacts. This plug-in architecture allows the board to be mounted securely within the turbine's control panel, interfacing directly with the backplane wiring system. The gold plating ensures low contact resistance and long-term immunity to oxidation, which is essential for maintaining circuit continuity in mission-critical applications. This modular design facilitates rapid troubleshooting; maintenance personnel can isolate and replace faulty logic segments without impacting the broader control framework, significantly reducing Mean Time to Repair (MTTR).
WHY PURCHASE IC3600LIVA1A FROM WOC?
World of Controls (WOC) specializes in supporting the aging GE Speedtronic fleet by providing high-quality, obsolete OEM parts. We offer the IC3600LIVA1A in both UNUSED and REBUILT conditions, each backed by our comprehensive warranty. Our rebuilding process involves replacing aging semiconductors and logic gates with high-spec components to restore original performance standards. With worldwide shipping and 24/7 technical expertise, WOC is your dedicated partner for maintaining the operational life of your legacy GE Mark I and Mark II assets.
What is the GE IC3600LIVA1A?
The IC3600LIVA1A is a Logic Inverter Printed Circuit Board manufactured by General Electric for the Speedtronic Mark I and Mark II control series. It is a fundamental hardware logic module designed to perform signal inversion for critical protective interlocks and sequencing functions within the turbine control architecture.
What are the common signs of component-level failure in the IC3600LIVA1A?
Where the output remains fixed regardless of input changes, or unexpected control behavior in safety interlocks. This is often caused by thermal fatigue in the NPN transistors or the degradation of logic gate semiconductors. WOC addresses these failures by refreshing all discrete active components during our refurbishment process.
How does the board handle different industrial logic voltage levels?
While standardized for 5V TTL levels, industrial environments often involve mixed logic families. The Logic Inverter Board is designed to handle a voltage range of -10 to 10 VDC, but it is critical to verify the logic-high threshold of interfacing PLCs or microcontrollers. Voltage level-shifting may be required when integrating this legacy board with modern 24V industrial control systems to ensure signal compatibility.
Why is the 13 ms update rate significant for gas turbine operations?
The 13 ms update rate ensures that all eight input channels are processed with a latency that is negligible relative to the mechanical response times of turbine valves and actuators. This deterministic timing is essential for real-time safety sequencing, ensuring that the complementary logic state is available to the control backplane without introducing dangerous delays in protective logic.
