5461-880 - Main CPU Controller Module

TECHNICAL SPECIFICATIONS:

Part Number: 5461-880
Manufacturer: Woodward
Series: NetCon / MicroNet Series
Product Type: Central Processing Unit (CPU) Main Controller Module
Processor Architecture: High-Performance 32-Bit Microprocessor Engine
Clock Frequency: High-Speed System Master Clock Execution
Backplane Interface: VMEbus Architecture Interface / High-Speed Inter-Rack Bus
Memory Configuration: High-Density Onboard Flash Memory & High-Speed SRAM
Execution Latency: Sub-Millisecond Task Execution & Real-Time Loop Processing
Communication Interfaces: Dual RS-232 / RS-485 Serial Ports & Network Link Engine
Data Bus Bandwidth: 32-Bit Master/Slave VMEbus Transfer Capabilities
Isolation Rating: 500 VDC Communication-to-Logic Isolation
Power Supply Input: +5 VDC
Power Consumption: 12.5 W (Typical) / 16.0 W (Maximum)
Form Factor: Single-Slot Plug-in VME Card
Mounting Style: Standard VME / MicroNet Chassis Slot Mount
Front Panel Display: Multi-LED Status Indicators
Fault Redundancy: Supported in Dual/Triple Modular Redundant (TMR) Configurations
Operating Temperature Limits: -40°C to +70°C (-40°F to +158°F)
Storage Temperature Range: -40°C to +85°C (-40°F to +185°F)
Relative Humidity Limit: 5% to 95% (Non-condensing)
Conformal Coating: Polyurethane / Acrylic Industrial Grade PCB Protection
Vibration & Shock Standard: MIL-STD-810 & IEC 60068-2-6 Compliant
Repair Time: 3–7 Days
Availability: In Stock
Weight: Approximately 1.35 kg (2.98 lbs)
Country of Origin: United States

FUNCTIONAL DESCRIPTION FOR 5461-880:

The 5461-880 is a CPU Controller Module designed and manufactured by Woodward. Positioned as the primary computational kernel within NetCon and MicroNet digital control systems, it executes complex governor algorithms, fuel-stroke positioning calculations, speed-control loops, and critical system safety interlocks for gas turbines, steam turbines, and industrial engines. By orchestrating deterministic communication across the backplane to peripheral I/O cards, the 5461-880 coordinates real-time telemetry processing and precise actuator positioning for demanding energy and mechanical drive applications.

DETERMINISTIC REAL-TIME EXECUTION & BACKPLANE MANAGEMENT:

Built around a high-speed 32-bit microprocessor engine, the Controller Module executes GAP (Graphical Application Program) control logic with sub-millisecond loop cycle times. The module serves as a VMEbus master, managing rapid data exchange between analog inputs, discrete contact cards, and driver output modules without task latency or execution jitter. Its onboard memory architecture segregates active runtime variables into battery-backed SRAM while storing core system firmware in non-volatile flash memory, preserving configuration parameters across full plant power cycles.

BUS SUPERVISION & SYSTEM REDUNDANCY ARBITRATION:

The Controller Module includes hardware self-checking and bus supervision routines. It continuously audits backplane bus timing, parity integrity, and internal power supply rails. When deployed in redundant or Dual-Redundant control architectures, the board coordinates lock-step synchronization and health heartbeat signals with companion processor cards. If a hardware anomaly or memory fault occurs, the module executes swift transfer logic to the standby processor or drops discrete trip outputs, holding the turbine in a deterministic safe state.

WHY BUY FROM WOC:

World of Controls specializes in the supply, repair, and lifecycle support of critical Woodward control components for active and legacy industrial platforms. Every Woodward 5461-880 CPU module undergoes a rigorous multi-tier testing routine, including VME bus stress checks, GAP program loading and execution, serial port communication checks, and extended thermal cycling on live chassis test beds. We maintain a ready-to-ship inventory of UNUSED surplus and REBUILT modules to assist plants in reducing unplanned outages. Backed by comprehensive warranties, global logistics, and deep technical expertise in NetCon and MicroNet governor systems, we provide reliable parts and repair options worldwide.

FREQUENTLY ASKED QUESTIONS:

What is Woodward 5461-880?

The Woodward 5461-880 is a Main CPU Controller Module used in NetCon and MicroNet control chassis. It serves as the primary microprocessor card that executes control software algorithms, evaluates safety logic, and manages high-speed backplane communication across all connected I/O modules.

What are the primary indicators of a CPU card failure on the Controller Module?

A CPU fault is typically indicated by an illuminated SYS FAULT or red CPU LED on the front panel, loss of serial/Ethernet communications, or a failure of the processor to complete its boot sequence across the backplane.

Does the Controller Module support redundant processor configurations?

Yes, the Controller Module is designed to operate in single-processor setups as well as synchronized dual or triple modular redundant (TMR) rack configurations for critical uptime applications.

What steps should be taken when replacing a CPU module?

Before replacing the module, ensure power to the rack is shut off, extract the system configuration and application files from software backups, verify DIP switch and jumper settings on the replacement card, and install the verified firmware onto the new module before returning the system to service.