Description
Bently Nevada 3500/92 136188-02
Technical Specifications:
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Series | 3500 Series |
| Module Type | Ethernet/RS485 Modbus I/O Module |
| Part Number | 136188-02 |
| Ethernet Interface | RJ45, 10BASE-T, TCP/IP |
| Serial Interface | RS485, 2-wire half-duplex |
| Supported Protocols | Modbus/TCP, Modbus RTU, Bently Nevada Host Protocol |
| Power Consumption | 5.6 watts typical |
| Operating Temperature | -30°C to +65°C (-22°F to +149°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 95% relative humidity, non-condensing |
| Dimensions | 241 mm x 24.4 mm x 99.1 mm |
| Weight | 0.44 kg |
| Rack Slot | Full-height rear slot |
Functional Features: The module supports simultaneous Ethernet and RS485 communication, allowing connection to redundant network paths. It implements the Modbus/TCP protocol for direct integration with Ethernet-based PLCs and DCS systems. The RS485 interface supports multi-drop network configurations with up to 32 devices per segment. The module includes configurable Modbus register mapping that allows customization of data points and scaling factors. LED indicators provide status visualization for both Ethernet link activity and RS485 communication status.
Structural Characteristics: The module is designed as a rear-slot I/O companion to the 3500/92 main communication gateway module. It features a compact, rack-optimized form factor. The Ethernet port uses a standard RJ45 connector with integrated magnetics. The RS485 terminal block provides secure, screw-type connections for field wiring. The module housing provides electromagnetic shielding and physical protection for internal electronic components.
Working Principle: The 136188-02 module receives processed data from the 3500/92 main module through the rack backplane interface. It simultaneously manages two independent communication paths: an Ethernet TCP/IP connection for high-speed data transfer to modern control systems, and an serial connection for integration with legacy Modbus RTU networks. The internal processor handles protocol encapsulation, data packet formation, and network error checking for both interfaces.
Installation Requirements: The module installs in the rear slot directly behind the 3500/92 main communication gateway module. Ensure proper alignment with the rack backplane connector. Use Category 5 or higher Ethernet cable for the RJ45 connection. Use shielded twisted-pair cable with characteristic impedance of 120 ohms for connections. Install termination resistors at both ends of the network bus. Maintain proper shield grounding at a single point to avoid ground loops.
Application Scenarios: Integrated turbine monitoring systems in combined cycle power plants, compressor protection systems in natural gas pipeline stations, pump monitoring networks in water distribution systems, fan and blower protection in industrial ventilation systems, and any application requiring simultaneous Ethernet and serial Modbus communication.
Usage Considerations: Verify proper seating of the module in the rack backplane connector. Ensure network polarity is correct to prevent communication failures. Do not connect or disconnect Ethernet cables during electrical storms or when rack power is active. Monitor LED indicators during initial startup to confirm proper operation of both communication interfaces. Maintain firmware compatibility between the I/O module and the main communication gateway module.
