Application Scenarios:
In a sprawling oil refinery, a massive centrifugal compressor responsible for hydrocracking process circulation is instrumented with multiple 4-20 mA output sensors: one for discharge pressure, one for differential pressure across a filter, one for bearing metal temperature, and one for case vibration. The BENTLY 350022M 288055-01 is the ideal solution, installed in a 3500 rack near the compressor. It continuously monitors all four of these key analog parameters. If the bearing temperature begins a steady climb due to lubrication issues, the module’s configurable alarms provide an early warning to operators long before a costly shutdown is forced. Simultaneously, its high-integrity 4-20 mA output for each channel can be sent to the plant DCS for process control and trending. The value of the 350022M 288055-01 is its ability to integrate diverse, non-vibration process parameters directly into the dedicated, highly reliable machinery protection system, creating a unified view of machine health and preventing catastrophic failures.
Technical Principles and Innovative Values:
Innovation Point 1: Versatile, Multi-Parameter Integration. The core innovation of the BENTLY 350022M 288055-01 is its ability to bring non-traditional, process-related analog signals into a high-integrity machinery protection system. Unlike dedicated vibration or speed monitors, this module can accept a standard 4-20 mA signal from virtually any compatible transmitter (pressure, temperature, flow, level), allowing for a holistic “machine condition” view within the unified 3500 framework.
Innovation Point 2: Dual, Independent Output Paths. Each channel on the 3500/22M provides two simultaneous, isolated output paths. The first is a configurable 4-20 mA retransmission of the monitored signal, which can be fed directly to a DCS or PLC for process control. The second path is the generation of relay contact outputs (Alert and Danger) based on user-defined setpoints. This dual functionality eliminates the need for separate signal isolators and alarm trips, simplifying the overall system architecture and reducing points of failure.
Innovation Point 3: Seamless Integration with 3500 System Diagnostics. The module is not a standalone device; it is a fully integrated component of the 3500 system. It communicates its status, calibrated values, and alarm conditions directly to the 3500 Framework, which can then relay this information to plant-wide systems via Ethernet or other protocols. This provides a single, unified diagnostic and management interface for all connected machinery parameters, from vibration to temperature to pressure.
Application Cases and Industry Value:
A combined-cycle power plant experienced repeated, unexpected trips on its gas turbine due to high exhaust temperature, leading to significant revenue loss. The existing temperature control loop in the DCS was not fast or reliable enough to prevent trips. Engineers installed a BENTLY 350022M 288055-01 module in the existing 3500 rack protecting the turbine. They connected the existing exhaust thermocouple transmitter’s 4-20 mA output to a channel on the 350022M. They set a conservative Alert warning and a precise Danger trip setpoint slightly below the DCS trip point. On the next transient, the BENTLY 350022M 288055-01. with its dedicated, high-speed monitoring logic, detected the temperature ramp and initiated a controlled turbine shutdown via its relay beforethe DCS could trigger a more severe protective action. This allowed for a safer, more controlled shutdown. The detailed event capture within the 3500 system helped diagnose a fuel valve stiction issue. The module’s integration provided a faster, more reliable safety layer, saving the plant from multiple future trips and protecting the turbine from thermal overstress.
Related Product Combination Solutions:
3500/15: The Power Supply module for the 3500 rack. It provides conditioned power to all monitoring modules, including the 3500/22M 288055-01. and is essential for system operation.
3500/25: The Keyphasor Module. While the 350022M monitors process analogs, the 3500/25 provides a once-per-revolution timing signal critical for vibration phase measurement, which is used by other modules in the same rack.
3500/40M: The Proximitor Driver module. It provides power to and conditions signals from eddy-current proximity probes (for vibration and position), working alongside the 350022M to provide a complete picture of machine health.
3500/42M: The Vibration Monitor module. This is the primary vibration monitoring card. The 350022M complements it by adding process parameter monitoring to the same system.
3500/32: The Relay Trip Module. It can accept trip signals from the BENTLY 350022M 288055-01 and other monitors to execute a final, voted shutdown of the machine.
3300 XL 8mm Proximity Probes & Transducers: While not directly connected to the 3500/22M, these are the primary vibration sensors used with other modules (like the 3500/42M) in the same rack system.
3500 Rack (e.g., 3500/05): The physical chassis that houses and interconnects the 350022M, power supplies, and other monitoring modules.
Installation, Maintenance, and Full-Cycle Support:
Installation of the BENTLY 350022M 288055-01 is designed for efficiency within the modular 3500 system. The module is simply aligned and inserted into an available slot in a powered-down 3500 rack until it clicks securely into place. Field wiring from the 4-20 mA transmitters is landed on the rack’s terminal panels, which are pre-wired to the backplane. Configuration is performed using the dedicated 3500 Configuration Software, where each channel is assigned a tag, engineering units, and Alert/Danger setpoints. The software also configures the 4-20 mA output range. The module is hot-swappable, allowing for replacement without shutting down the entire monitoring system.
Routine maintenance is minimal and primarily digital. The health of the BENTLY 350022M is continuously monitored by the 3500 Framework. Technicians should periodically verify the calibration of the connected field transmitters, as the module’s accuracy depends on a valid input signal. The front-panel LEDs provide immediate status: a green OK LED indicates proper operation. The most common “maintenance” activity is adjusting alarm setpoints or scaling via the configuration software as operational needs change. We provide fully tested, genuine Bently Nevada replacement modules. Our support includes assistance with configuration file management, troubleshooting communication issues with the framework, and guidance on integrating the 3500/22M’s signals into your plant’s overall control and safety strategy.
Integrate process and protection data seamlessly. Contact us for genuine Bently Nevada modules and expert system support.
Reviews
There are no reviews yet.