Bently Nevada 3500/20-01-02-00 Rack Interface Module

The Bently Nevada 3500/20-01-02-00 is a Rack Interface Module (RIM) designed for the 3500 Series Machinery Protection System. As the primary communication interface for the rack, this module manages configuration, data retrieval, and communication between the 3500 monitoring system and external host software or control systems.

The -01-02-00 configuration indicates specific options for this RIM variant. The module must be installed in slot 1 of the 3500 rack, directly adjacent to the power supply modules . While it does not participate in the critical monitoring signal path, the 3500/20 is essential for overall system functionality, enabling rack configuration and retrieval of machinery data for external systems .

  • Item No :

    3500/20-01-02-00
  • Order(MOQ) :

    1
  • Payment :

    EXW
  • Product Origin :

    USA
  • Shipping Port :

    Wuhan, Hubei, China
  • Lead Time :

    3-5 days
  • Weight :

    0.5kg
  • Core Advantages

    • Central Communication Hub: The 3500/20 provides the main interface for rack configuration and data retrieval, supporting Bently Nevada's proprietary protocol for communication with host software. It enables seamless integration between the monitoring rack and external systems including DCS, PLC, and SCADA platforms .

    • Multi-Protocol Communication Support: The module supports multiple industrial communication protocols including Modbus RTU/TCP, Ethernet/IP, and Profibus, allowing flexible integration with various control systems. The standard configuration includes front-panel RS-232 serial communication with a maximum data rate of 38.4 k baud .

    • Comprehensive System Management: As the rack manager, the 3500/20 automatically identifies, configures, and initializes all monitoring modules in the rack. It continuously monitors each module's operational status and can trigger system-level alarms if faults, sensor disconnections, or power anomalies are detected .

    • TMR Configuration Support: For Triple Modular Redundancy (TMR) applications, the module can perform "monitor channel comparison" functions, continuously comparing outputs from three redundant monitors. If one monitor's data deviates beyond the configured percentage, an error is marked and recorded in the system event list .

    • Flexible Configuration Options: The module features a front-panel configuration keylock for selecting RUN or PROGRAM mode. RUN mode allows normal rack operation while locking out configuration changes; PROGRAM mode enables local or remote rack configuration. A rack address switch provides 63 possible addresses for network identification .

    • Comprehensive Diagnostic Indicators: Front-panel LED indicators provide real-time status information including OK (module operating properly), TX/RX (communication with other rack modules), TM (Trip Multiply active), and CONFIG OK (valid rack configuration) .

    Technical Specifications

     
     
    Parameter Specification
    Manufacturer Bently Nevada (Baker Hughes)
    Model 3500/20-01-02-00
    Part Number 125768-01
    Product Type Rack Interface Module (RIM)
    Rack Position Slot 1 (adjacent to power supply)
    Communication Interface Front Panel RS-232; I/O Module RS-232/RS-422
    Data Rate 38.4 k baud maximum (auto baud capable)
    Supported Protocols Bently Nevada proprietary, Modbus RTU/TCP, Ethernet/IP
    Rack Address Range 63 possible addresses (000000 reserved for host)
    Power Consumption 4.75 W typical
    Dimensions (H × W × D) 241.3 mm × 24.4 mm × 241.8 mm
    Weight Approximately 0.91 kg
    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 Up to 95%, non-condensing
    Protection Class IP20 (internal component)
    RS-232 Cable Length 30 meters (100 feet) maximum
    RS-422 Cable Length 1200 meters (4000 feet) maximum
    OK Relay Rating 5A @ 24 VDC/120 VAC, 120 Watts/600 VA
    Certifications CE, UL, CSA, ATEX (Zone 2), IECEx

    Application Scenarios

    The Bently Nevada 3500/20-01-02-00 is essential in various industrial automation systems requiring reliable machinery protection and data communication:

    • Power Generation Plants: Provides communication interface for turbine and generator monitoring systems, enabling real-time data transmission to plant DCS for operator awareness and alarm management .

    • Oil and Gas Industry: Used in refinery compressor monitoring racks and offshore platform rotating equipment protection systems, ensuring continuous communication with control room systems.

    • Petrochemical Plants: Supports machinery protection systems for critical compressors and pumps, providing reliable data communication for process control integration.

    • Chemical Processing: Enables monitoring system integration with plant-wide control networks for reactors, agitators, and other rotating equipment.

    • Metals and Mining: Provides communication interface for monitoring systems on rolling mills, crushers, and heavy rotating equipment in harsh industrial environments.

    • Multi-Rack Installations: The 3500 Link protocol allows cascading multiple 3500 racks into larger networks, enabling centralized management of plant-wide machinery protection data .

    What Is Included

    • 1 × Bently Nevada 3500/20-01-02-00 Rack Interface Module

    • Original Factory Packaging (New & Original)

    Before You Buy

    • Stock Status: In Stock – Ready for immediate dispatch.

    • Condition: New and Original. Each unit is 100% tested and verified before shipping.

    • Installation Position: The module must be installed in slot 1 of the 3500 rack, directly adjacent to the power supply modules. Ensure the module is fully seated in the rack backplane connector before applying power .

    • Configuration Note: The module requires 3500 Rack Configuration Software for setup. The configuration keylock must be in PROGRAM mode to allow configuration changes .

    • Warranty: Comes with a standard 12-month warranty covering defects in materials and workmanship.

    Frequently Asked Questions

    Q: What does the model number 3500/20-01-02-00 represent?
    A: The model number breaks down as follows: 3500/20 = Rack Interface Module for the 3500 Series Machinery Protection System; -01-02-00 = Configuration options for this specific RIM variant with RS-232/RS-422 I/O module (Part Number 125768-01) .

    Q: What is the primary function of the 3500/20 RIM?
    A: The module provides the main communication interface for the 3500 rack, enabling rack configuration and retrieval of machinery data for external systems. It supports Bently Nevada's proprietary protocol for communication with host software .

    Q: Where must this module be installed?
    A: The 3500/20 must be installed in slot 1 of the 3500 rack, directly next to the power supply modules. Each rack requires one RIM .

    Q: Does the RIM participate in the critical monitoring path?
    A: No. The standard RIM does not participate in the critical monitoring signal path and does not affect normal operation of the monitoring modules. It provides configuration and communication functions only .

    Q: What is the difference between RUN and PROGRAM mode?
    A: RUN mode allows normal operation of the rack and locks out configuration changes. PROGRAM mode allows normal operation and also enables local or remote rack configuration. The key can be removed in either position .

    Q: What communication interfaces does this module support?
    A: The module supports RS-232 serial communication through the front panel and RS-232/RS-422 through the I/O module. The I/O module also supports internal modem communication (14.4 k baud) .

    Q: What is the function of the OK relay?
    A: The I/O Module OK Relay indicates when the 3500 rack is operating normally or when a fault has been detected within the rack. The user can select either an "OPEN" or "CLOSED" contact to annunciate a NOT OK condition .

    Q: How fast can you ship this module?
    A: As this is a stock item, we typically ship within 24 hours of order confirmation via global express services like DHL or FedEx.

    Recommending Models

    The Bently Nevada 3500/20-01-02-00 works seamlessly with the following Bently Nevada 3500 Series components:

    • 3500/22M: Transient Data Interface Module as a modern upgrade path, providing Ethernet-based communication, high-speed waveform capture, and direct System 1 software integration .

    • 3500/15: Power Supply Module for providing regulated power to the 3500 rack and monitoring modules.

    • 3500/42M: Proximitor/Seismic Monitor for vibration and position monitoring, providing input to the RIM for data communication.

    • 3500/05: System Rack that houses the RIM and other monitoring modules.

    • 125768-01: RS-232/RS-422 I/O Module with external terminations, used with the 3500/20 RIM for field wiring connections .

    • 3500/25: Keyphasor Module for speed and phase reference measurement, integrated through the RIM communication interface.

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