Description
Product Description
The Bently Nevada 3500/90 (P/N 125728-01) is a communication interface module developed for the 3500 Machinery Protection System. The module serves as the central data exchange interface between the 3500 rack and external automation platforms including DCS, PLC, SCADA, and condition monitoring systems.
Installed directly within the 3500 rack, the communication gateway gathers operational information from all installed monitor modules and distributes the data through industrial communication protocols. Parameters such as vibration, shaft position, speed, temperature, alarm status, and event records can be transmitted digitally without requiring extensive point-to-point field wiring.
The module supports both serial and Ethernet communication methods, making it suitable for integration into modern industrial control networks and remote monitoring architectures.
Main Features
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Central communication interface for 3500 systems
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Real-time rack data acquisition and transmission
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Ethernet and serial communication support
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Compatible with Modbus RTU and Modbus TCP
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Alarm and event data reporting
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Supports system integration with PLC and DCS platforms
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Reduces conventional hardwired signal requirements
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LED diagnostics for communication and module status
Technical Specifications
| Parameter |
Specification |
| Product Type |
Communication Gateway Module |
| Model |
3500/90 |
| Part Number |
125728-01 |
| System Compatibility |
Bently Nevada 3500 Series |
| Installation |
Rack-mounted |
| Country of Origin |
USA |
| Power Source |
Supplied by 3500 rack |
| Typical Power Consumption |
Approximately 5 W |
Communication Interfaces
| Interface |
Details |
| Ethernet |
TCP/IP communication |
| Serial Interfaces |
RS-232, RS-422, RS-485 |
| Serial Baud Rate |
Up to 115.2 kbps |
| Ethernet Speed |
Up to 100 Mbps |
Supported Protocols
The 3500/90 125728-01 communication module supports several industrial communication standards:
Protocol availability may vary depending on firmware revision and system configuration.
Functional Capabilities
| Function |
Description |
| Rack Data Collection |
Retrieves measurements from all installed modules |
| Alarm Reporting |
Transfers alarm and shutdown information |
| Event Logging |
Communicates event and status records |
| Real-Time Monitoring |
Supports continuous machinery data transmission |
| Network Integration |
Connects 3500 systems to plant control networks |
| Keyphasor® Distribution |
Supports timing reference integration at system level |
Environmental Specifications
| Parameter |
Value |
| Operating Temperature |
-30°C to +65°C |
| Extended Operating Range |
Up to +70°C depending on revision |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
Up to 95% non-condensing |
Physical Characteristics
| Item |
Specification |
| Approximate Dimensions |
160 × 160 × 120 mm |
| Weight |
0.8 kg |
| Form Factor |
Rack-mounted communication module |
Typical Applications
The Bently Nevada 3500/90 module is widely used in industrial machinery monitoring systems including:
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Steam turbine protection systems
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Gas turbine monitoring
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Compressors and pump trains
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Offshore and marine rotating equipment
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Oil and gas processing facilities
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Power generation plants
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Petrochemical machinery protection systems
Integration Advantages
The communication gateway simplifies integration between the 3500 rack and plant-wide automation systems by centralizing machinery data access through digital protocols. This architecture helps reduce installation complexity while improving access to vibration and protection data for operators and maintenance personnel.
FAQ
What is the purpose of the 3500/90 module?
The module functions as the communication interface between the 3500 rack and external control or monitoring systems such as PLC, DCS, or SCADA platforms.
Does the module support Ethernet communication?
Yes. The unit supports Ethernet TCP/IP communication in addition to serial interfaces including RS-232, RS-422, and RS-485.
Can the 3500/90 transmit alarm information?
Yes. The module transfers alarm conditions, event data, machinery measurements, and status information from the entire 3500 rack.
