Description
- The WOODWARD 5464-468 is a high-reliability power supply module designed for the MicroNet TMR (Triple Modular Redundant) and MicroNet Simplex control systems. Unlike low-voltage variants, this module is specifically engineered to accept high-voltage AC or DC inputs, converting them into the stable, regulated DC power required by the system’s internal VME backplane and processing logic. It is built to industrial-grade specifications, featuring advanced electrical isolation and fault-monitoring capabilities to ensure that critical turbine control logic remains powered even during significant external electrical transients or fluctuations.
Product Parameters
- Brand: Woodward
- Model Number: 5464-468
- Input Voltage (AC): 88–132 VAC or 180–264 VAC (Switch Selectable/Auto-ranging)
- Input Voltage (DC): 100–150 VDC or 200–300 VDC
- Output Power: Supplies +5V, +15V, and -15V to the MicroNet chassis
- Redundancy: Supports hot-swappable parallel configuration in TMR racks
- Mounting: Standard MicroNet VME-style slot
- Status Indicators: LED lights for Input OK, Output OK, and Fault
- Operating Temperature: -40°C to +70°C
- Protection: Integrated over-voltage and short-circuit protection
This module is a cornerstone of the MicroNet architecture, providing the necessary energy for CPU and I/O modules to execute complex control strategies for steam and gas turbines with zero downtime.
Comparison with Similar Models
The 5464-468 is distinguished from the 5463 series by its High Voltage input range. While the 5463-473 is designed for 24V DC battery systems, the 5464-468 is intended for facilities utilizing 110/220V mains or high-voltage DC station power. Compared to the newer 5466 series power modules, the 5464-468 maintains compatibility with legacy MicroNet backplanes while offering improved heat dissipation and MTBF (Mean Time Between Failures) ratings, making it a preferred choice for retrofitting and maintaining existing mission-critical installations.
Operation Tips
- Voltage Selection: Before installation, verify that the input voltage jumpers or switches on the module match your facility’s power supply (e.g., 110VAC vs 220VAC) to prevent internal damage.
- Redundant Operation: In a TMR system, ensure at least two power modules are healthy; the system is designed so that any single module can be replaced while the turbine is running without affecting the control logic.
- Ventilation: Ensure the MicroNet chassis fan tray is operational, as this high-voltage module generates more heat than low-voltage counterparts and requires consistent airflow for long-term stability.
- Seating: Use the top and bottom ejector handles to firmly seat the module into the backplane; loose connections can cause intermittent power resets or “VME Bus Errors” in the CPU modules.
