Product Description
Woodward 5501-381 MicroNet CPU Module
Product Overview
- The Woodward 5501-381 is a MicroNet CPU Module designed for use in Woodward’s MicroNet control system, a high-performance, modular platform for controlling industrial gas turbines, steam turbines, and compressors in power generation, oil and gas, and marine applications. This microprocessor-based module serves as the central processing unit for the MicroNet system, executing control logic, managing I/O, and facilitating communication with other system components and external devices. The 5501-381 is optimized for real-time control, offering high-speed processing and robust fault tolerance for critical applications. Compared to Woodward’s genset controllers (e.g., EasyGen-3500-5, 8440-2087), protection relays (e.g., XD1G11), or overspeed protection systems (e.g., 9907-1228), the 5501-381 is a core component of a distributed control system, not a standalone controller or protection device. It is distinct from Woodward’s communication modules (e.g., SST-ESR2-CLX-RLL), excitation systems (e.g., DECS-100-B15), electronic governors (e.g., DYN1-10784-003-0-12), and actuators (e.g., 8408-921).
Technical Specifications
- The 5501-381 has the following specifications based on industry sources and Woodward documentation:
| Specification | Details |
|---|---|
| Model/Part Number | 5501-381 |
| Manufacturer | Woodward |
| Description | MicroNet CPU Module for Turbine and Compressor Control |
| Series | MicroNet |
| Function | Executes control logic, manages I/O, and facilitates communication in MicroNet control systems |
| Processor | 32-bit microprocessor (specific model not publicly detailed, typically PowerPC-based) |
| Memory | Flash: 16–32 MB (for firmware and application code) RAM: 8–16 MB (for runtime data) Non-volatile memory: 512 KB (for configuration and logging) |
| Display | None (status via LEDs; configuration via external HMI or PC) |
| Inputs | None directly (interfaces with I/O modules via MicroNet backplane) |
| Outputs | None directly (controls I/O modules via MicroNet backplane) |
| Communication Interfaces | 2 Ethernet ports (10/100 Mbps, Modbus TCP, Woodward protocols) 2 serial ports (RS-232/RS-485, Modbus RTU) CANbus (for inter-module communication) MicroNet proprietary bus (for I/O and other modules) |
| Supported Protocols | Modbus TCP, Modbus RTU, Woodward NetSim, OPC (via software), custom protocols (application-dependent) |
| Control Cycle Time | 5–10 ms (application-dependent) |
| Redundancy | Supports redundant CPU configurations (with additional 5501-381 or compatible modules) |
| Diagnostics | Fault detection, event logging (up to 1000 events), watchdog timer, status LEDs, system health monitoring |
| Compatibility | Woodward MicroNet I/O modules (e.g., analog, digital, thermocouple), actuators (e.g., 8408-921), and control systems (e.g., 505, NetCon); third-party devices via Modbus; integrates with SCADA/DCS systems |
| Power Supply | 18–32 VDC (24 VDC nominal, via MicroNet chassis) |
| Power Consumption | Approx. 10–15 W |
| Environmental Specifications | Operating Temperature: -40°C to +70°C (-40°F to +158°F) Storage Temperature: -40°C to +85°C (-40°F to +185°F) Relative Humidity: 5% to 95% non-condensing Vibration: IEC 60068-2-6 compliant Shock: IEC 60068-2-27 compliant |
| Enclosure | IP20 (installed in MicroNet chassis) |
| Dimensions | Approx. 305 mm (H) x 50 mm (W) x 200 mm (D) |
| Weight | Approx. 1–1.5 kg |
| Mounting | Plugs into MicroNet chassis (slot-specific) |
| Certifications | CE, UL, CSA, marine certifications (e.g., DNV, ABS, Lloyd’s Register, configuration-dependent); ATEX/IECEx Zone 2 (optional) |