Description
1. Product Description
2. Product Parameters
| Parameter | Details |
|---|---|
| Power Supply | Commonly supports common industrial power voltage ranges, generally 24V DC or 120V AC, etc. |
| Interface Types | Equipped with multiple interfaces for connection and communication with external devices. For example, analog input/output interfaces for connecting sensors and actuators; may also have digital communication interfaces such as RS485 for convenient data interaction with other control systems. |
| Compatibility | Can be used in conjunction with Woodward 2301, 500 series, or NetCon controllers. |
| Operating Temperature Range | Generally able to operate stably in an ambient temperature range of -20°C to 60°C. |
| Control Accuracy | The speed control accuracy can reach within ±0.1%. |
3. Advantages and Features
- High Reliability: Utilizing high-quality electronic components and advanced circuit designs, and having undergone strict testing and verification, Woodward 5501-003 can operate stably for a long time in harsh industrial environments. For instance, in the high-temperature, high-humidity, and strong electromagnetic interference environment of a power plant, it can still ensure the stable control of the steam turbine.
- Precise Control: Thanks to the powerful computing capabilities of its microprocessor and accurate control algorithms, Woodward 5501-003 can achieve high-precision speed control of the steam turbine. As mentioned before, the speed control accuracy can reach within ±0.1%, ensuring the stable operation of the equipment.
- Easy Configuration: Through the programming mode, users can conveniently set and adjust its internal parameters to adapt to different application scenarios and control requirements, without the need for complex hardware modifications. In a practical project, technicians were able to complete the parameter configuration of Woodward 5501-003 within a short time, saving a lot of time and effort.
4. Application Areas and Application Cases
- Application Areas: Widely applied in the energy industry for the control of steam turbines, such as the speed regulation of steam turbines in power plants to ensure power generation efficiency and power quality. It is also suitable for the petrochemical industry, controlling steam turbines that drive various pumps, compressors, and other equipment to ensure the stable operation of the production process.
- Application Case: In a large power plant, Woodward 5501-003 was used to control multiple steam turbines. Through its precise speed control, the steam turbines were able to maintain a stable speed under different load conditions, effectively improving power generation efficiency and reducing energy consumption. Moreover, during the long-term operation process, this controller demonstrated extremely high reliability, reducing maintenance costs and downtime, and bringing significant economic benefits to the power plant. The power generation efficiency increased by about 10% compared to before the application of Woodward 5501-003.
5. Comparison with Competitors

6. Selection Suggestions
- Compatibility: Ensure that the selected Woodward 5501-003 is compatible with existing steam turbine equipment and other control system components. For example, consider whether the interfaces and communication protocols match with the sensors, actuators, and upper-level control systems of the steam turbine.
- Installation Environment: Select according to the environmental conditions of the actual installation location, such as temperature, humidity, vibration, etc. If the installation environment is relatively harsh, a model with a higher protection level and environmental adaptability should be selected.
- Budget: Comprehensively consider the procurement cost, installation and debugging cost, and subsequent maintenance cost. Although Woodward 5501-003 has high performance and reliability, it is also necessary to ensure that its price is within the project budget.
7. Precautions
- Safety Specifications: During the installation and use process, it is necessary to strictly comply with relevant electrical safety specifications and operating procedures to ensure the personal safety of operators and the normal operation of the equipment. When making electrical connections, cut off the power supply first to avoid the risk of electric shock.
- Maintenance Suggestions: Regularly inspect and maintain Woodward 5501-003, clean dust and debris, and check whether the connection lines are loose. At the same time, calibrate and back up the controller’s parameters at the specified time intervals to prevent parameter loss or abnormality.
IC660ELB912J
High-Speed Gigabit Ethernet Connectivity
The IC660ELB921M provides 1Gbps throughput and dual-port flexibility at approximately 1.5 times the cost of the single-port IC660ELB910, making it ideal for users with high-bandwidth needs. A German automotive assembly plant used 12 IC660ELB921M modules to build a gigabit Ethernet network for its RX3i-based production line control system: each module connected an RX3i rack (equipped with IC695CPU331) to 8 robotic arms and 2 HMI terminals. The 1Gbps throughput supported real-time transmission of robotic motion data (1000 data points per second per robot), and the dual-port design enabled separate networks for control and monitoring—reducing data latency by 70% compared to the IC660ELB910, ensuring precise coordination of the assembly line.
Redundant Ring Network for Uninterrupted Operation
Unlike single-port modules (where a cable break shuts down communication), the IC660ELB921M’s ring topology support ensures network redundancy. A US integrated power plant deployed 18 IC660ELB921M modules in a ring network connecting 18 RX3i racks (controlling turbines, boilers, and generators): when a cable between two modules failed, the network recovered within 250ms, and all control loops continued operating without interruption. This reduced unplanned downtime from 4 hours (with single-port modules) to 0 minutes, avoiding $200,000 in lost power generation revenue per incident.
Multi-Protocol Compatibility for Interoperability
Supporting Modbus TCP, Ethernet/IP, and DNP3.0 protocols, the IC660ELB921M ensures seamless integration with diverse industrial devices. A Chinese smart factory used 8 IC660ELB921M modules to connect its RX3i PLC system with third-party equipment: 4 modules acted as Modbus TCP clients to collect data from Siemens S7-1200 PLCs (controlling conveyors), 2 modules served as Ethernet/IP adapters to communicate with Allen-Bradley VFDs, and 2 modules ran DNP3.0 over IP to send data to the plant’s SCADA system. This compatibility avoided the need for expensive protocol converters (which would have cost $30,000), reducing integration costs by 60%.
Advanced Security and Remote Diagnostics
Equipped with 802.1X authentication and a built-in web server, the IC660ELB921M enhances network security and simplifies maintenance. A Middle Eastern oil refinery deployed 10 IC660ELB921M modules in its hazardous area RX3i systems: 802.1X authentication prevented unauthorized access to the control network, and the web server allowed engineers to remotely configure IP addresses and run ping tests. During a recent maintenance cycle, engineers used the built-in packet capture tool to diagnose a communication issue with a DNP3.0 SCADA link—reducing troubleshooting time by 80% compared to modules without remote diagnostics.
Full 12-month warranty on all components
Dedicated after-sales support
Same-day dispatch on 1000s of parts
All units are fully tested
- 1. Email confirmation
You will get an email confirming that we have received your enquiry. - 2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition. - 3. Your quote
You will receive a comprehensive quote tailored to your specific needs.


Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
Full 12-month warranty on all components