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125768-01

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The Bently Nevada 125768-01 is an I/O module used with the 3500/22 Rack Interface Module (RIM). It is the key physical interface for communication between the 3500 monitoring system and external systems, primarily responsible for outputting frame data serially.
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Technical specifications for 125768-01

  • Manufacturer:
    Bently Nevada
  • Part Number:
    125768-01
  • Product Family:
    3500 System
  • Power Consumption:
    4.75 watts, typical
  • Standard:
    RS232 serial communications
  • Data Rate:
    38.4 k baud.
  • Communications:
    RS232, RS422, or external modem.
  • Protocol:
    Bently Nevada proprietary.
  • Cable Length:
    RS232: 30 metres (100 feet) maximum; RS422: 1200 metres (4000 feet) maximum.
  • Operating Temperature:
    0°C to +50°C (+32°F to +122°F).
  • Storage Temperature:
    -40°C to +85°C (-40°F to +185°F).
  • Humidity:
    95%, non-condensing.
  • Weight:
    0.44 kg
  • Estimated shipping dimensions:
    2.4x11x24cm
  • Tariff Code:
    6602000090
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Diagnostic Protection Installation Application

Features:

  • Serial Communication Module Provides Reliable Data Transfer Between Racks And Host Systems.
  • Supports RS232, RS422, And External Modem Connections For Flexible Integration.
  • Compact Rack-Mount Design Operates In Wide Temperature And High Humidity Conditions.
The Bently Nevada 125768-01 RIM I/O Module enables stable serial data communication from the 3500 rack to external monitoring and control systems. It transmits critical machinery metrics such as vibration readings, displacement values, and system status to host software or third-party controllers, ensuring real-time visibility of system performance.

Designed for industrial environments, the 125768-01 operates between 0°C and +50°C and can be safely stored from -40°C to +85°C. Its tolerance for 95% non-condensing humidity allows installation in locations with high moisture levels without affecting performance. Typical power consumption is 4.75 watts, keeping operational costs low while maintaining reliability.

The module’s versatile connectivity supports RS232 for shorter runs up to 30 meters and RS422 for distances up to 1200 meters, with the option for external modems if needed. Its physical design fits a full-height rear slot in the rack, enabling straightforward installation and secure cable connections, making it an efficient choice for continuous industrial monitoring and data transfer applications.

The 125768-01 Bently Nevada RIM I/O Module with RS232/RS422 Interface may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 125768-01 RIM I/O Module with RS232/RS422 Interface Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 125768-01 RIM I/O Module with RS232/RS422 Interface Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 125768-01
  • Condition New Original ready stock
  • Product Family 130119-01,163179-01,140482-01
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • System Health Monitoring: As the communication portal for the 3500 frame, it transmits OK relay status and module self-test information in real time. In the event of a frame hardware failure, diagnostic data is immediately fed back to the host computer via the RS232/RS422 interface.
  • Configuration Lockout Protection: In conjunction with the 3500/22 main module, this interface supports write protection. Unauthorized remote modification can be prevented via backplane terminals or software commands, ensuring the security of mechanical protection logic.
  • Event Log Retrieval: Supports retrieval of the system event list and alarm events stored internally within the frame, providing crucial timeline data for post-accident "black box" analysis.
  • Communication Link Diagnostics: The module has send/receive indication functions, allowing technicians to view the packet loss rate and error codes of the serial link in real time using diagnostic software, ensuring the integrity of monitored data transmission.
  • Hot Swappable Support: The 125768-01 module can be safely replaced while the 3500 system is powered on and running, without triggering frame tripping or interrupting the protection functions of other monitoring modules.
  • Flexible Interface Switching: The module integrates both RS232 (short distance) and RS422 (long distance) physical interfaces. During system upgrade cabling, users do not need to replace hardware; they only need to adjust the wiring method and patch cord settings to adapt to the new communication distance.
  • Simplified Internal Terminations: Utilizing a built-in terminal block design, field signal lines can be directly crimped during upgrades. Compared to traditional external cable connections, this method significantly reduces cabinet space occupation and potential points of failure.
  • Firmware Compatibility: This I/O module features a highly standardized design, compatible with multiple versions of the 3500/22 RIM main module, facilitating the maintenance and refurbishment of communication interfaces in older systems without replacing the entire unit.
  • Local Configuration and Debugging: Technicians can connect a laptop to the rack via its RS232 interface to run the 3500 Rack Config software for frame parameter settings, sensor calibration, and real-time monitoring.
  • Long-Distance DCS/PLC Integration: Utilizing the anti-interference characteristics of the RS422 interface, static data of the 3500 frame (such as total vibration and displacement values) can be transmitted over long distances to a third-party system in the control room, achieving factory-level data aggregation.
  • System 1 Software Access: In early system architectures, this module was the core physical link connecting to the Bently Nevada System 1 condition monitoring software, used to acquire machine trend data and condition reports.
  • Multi-Frame Networking: In large pump rooms or compressor stations with multiple 3500 frames, multiple frames can be connected in series or parallel into a unified monitoring network via the module's serial interface.
Description
The Bently Nevada 125768-01 RIM I/O Module serves as the primary communication interface between the 3500 monitoring system and external host systems. Installed in conjunction with the 3500/22 Rack Interface Module (RIM), the 125768-01 provides the physical ports needed to transmit frame data, including vibration, displacement, and system status information, to computers or third-party control systems. It supports multiple serial protocols, including RS232 and RS422, and can accommodate external modems when necessary.

With a typical power consumption of 4.75 watts, the 125768-01 is efficient while ensuring reliable operation in industrial environments. It operates across temperatures from 0°C to +50°C (32°F to +122°F) and can be stored at temperatures from -40°C to +85°C (-40°F to +185°F), withstanding up to 95% non-condensing humidity. Cable length limitations are defined at 30 meters for RS232 and up to 1200 meters for RS422, allowing flexible deployment across various system architectures.

The 125768-01 works seamlessly with host software such as Rack Config or System 1, delivering collected data from the 3500 rack in real time. It integrates tightly with the 3500/22 RIM module, which manages the overall rack configuration and communication protocol. While modules like 125768-01 do not directly impact the critical monitoring path, they ensure accurate and timely transmission of key system metrics to operators and control systems.

The module also complements other external communication processors compatible with 3500 racks, including TDXnet, TDIX, and DDIX. In a typical rack setup, one 3500/22 RIM and its 125768-01 module provide the complete interface solution, enabling reliable and consistent serial data communication without affecting the monitoring system's operational integrity.
Alternative Names
125760-01 135031-01 149986-02 125720-02
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can 125768-01 work with multiple 3500 racks?
Yes, it communicates data from the 3500 rack to host software, and multiple modules can be deployed if each rack requires an independent serial interface.
How does humidity affect the 125768-01 module?
The module is rated for 95% non-condensing humidity, ensuring reliable performance in most industrial environments.
How does 125768-01 handle different communication protocols?
It supports Bently Nevada proprietary protocol over RS232 or RS422 and can connect through external modems if required.

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