Bently Nevada 3500/53 133396-01 Redundant Overspeed Detection I/O Module

Function Features

• Redundant Detection with Voting Logic: It is built with dual independent channels and supports 2-out-of-2 or 2-out-of-3 voting configurations. This design eliminates false alarms caused by single-channel failures and ensures the accuracy and reliability of overspeed protection decisions, which is essential for safety-critical industrial equipment.
• Rapid Alarm and Protective Response: For frequencies above 300Hz, the alarm delay is less than 30 milliseconds. When the equipment speed exceeds the preset danger threshold, the module immediately activates relay outputs to trigger protective actions such as emergency shutdown. This rapid response prevents catastrophic damage to high-speed rotating machinery.
• Flexible Configuration and Software Control: Alarm setpoints including alert and danger thresholds can be configured through software. Users can also program relay contacts via software to turn on or off based on the status of any single channel or combination of channels, adapting to the protection needs of different types of machinery.
• Stable Signal Transmission and Protection: The buffered outputs are equipped with coaxial connectors that provide short-circuit and ESD protection. This safeguards the module and connected equipment from damage caused by abnormal circuit conditions or electrostatic discharge, ensuring the stability of signal transmission.
• Seamless Industrial Network Integration: It supports multiple industrial communication protocols such as Ethernet/IP and Profinet. The Modbus gateway option allows it to directly transmit static variables, status, and event lists to upper-level systems, facilitating centralized monitoring and unified management of the entire industrial production line.

Application Scenarios

• Power Generation Industry: It is widely used in steam turbines and gas turbines of thermal power plants and hydropower stations, as well as generators and exciters. It prevents overspeed-induced equipment explosions or power grid blackouts, which is critical for maintaining the continuous and stable operation of power generation systems.
• Oil and Gas Industry: It is installed on centrifugal compressors, turboexpanders, and pipeline pumps in oil fields and natural gas processing plants. It adapts to flammable and explosive field environments and avoids leaks and explosions caused by overspeed failures of key transmission equipment, ensuring the safety of extraction and transportation processes.
• Petrochemical Industry: It provides overspeed protection for reaction kettle agitators, material delivery pumps, and gearboxes in petrochemical plants. It maintains stable operation under high-temperature and high-pressure working conditions, preventing production accidents such as material leakage and reaction out of control due to equipment malfunctions.
• Metallurgical Industry: It is applied to blast furnace fans, rolling mill main motors, and crusher drive systems in steel mills. It resists high dust and large temperature fluctuations in smelting sites, ensuring that the rotating equipment does not stop abnormally due to overspeed and maintaining the continuity of metallurgical production.
• Marine and Heavy Machinery: It is configured on marine diesel engines, shipborne power generation equipment, and large mining machinery. Its rugged structure and strong environmental adaptability can withstand salt mist corrosion and severe vibration, providing reliable overspeed protection for machinery operating in extreme working conditions.