Bently Nevada 128240-01
Bently Nevada 128240-01
Bently Nevada 128240-01
Bently Nevada 128240-01
Bently Nevada 128240-01
Bently Nevada 128240-01
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com

128240-01

/ 4.9
1001 reviews | Need a Specific Revision?
Bently Nevada 128240-01 is a rear I/O module for the 3500/42M monitor, providing reliable connection between internal processing modules and external transducers for vibration and displacement monitoring.
Get a quick price for 128240-01
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 128240-01

  • Manufacturer:
    Bently Nevada
  • Part Number:
    128240-01
  • Product Family:
    3500 System
  • Signal:
    Accepts from 1 to 4 proximity, velocity or acceleration transducer signals
  • Power consumption:
    7.7 watts, typical
  • Input Impedance:
    10 kΩ(Proximitor and acceleration inputs)
  • Output Impedance:
    550 Ω
  • Rack Space Requirements:
    1 full-height rear slot
  • Operating Temperature:
    -30°C to +65°C (-22°F to +150°F)
  • Storage Temperature:
    -40°C to +85°C (-40°F to +185°F).
  • Humidity:
    95%, noncondensing
  • Weight:
    0.58 kg
  • Estimated shipping dimensions:
    31.5x21x5.5cm
  • Tariff Code:
    3902100090
  • 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 Operating Environment Installation Application

Features:

  • Provides Reliable Connection Between 3500/42M Module And External Transducers
  • Supports Multiple Proximity, Velocity And Acceleration Inputs
  • Ensures Stable Signal Transmission Under Industrial Conditions
The Bently Nevada 128240-01 is a rear I/O module designed for the 3500/42M Proximitor Seismic Monitor, functioning as a critical interface between the internal processing circuitry and field transducers. It allows seamless integration of 1 to 4 proximity, velocity, or acceleration transducer signals, simplifying installation and reducing maintenance complexity.

Compared with earlier modules such as 128239‑01, the 128240-01 offers full four-channel support, higher environmental tolerance, and buffered outputs to maintain signal integrity. Its operation range from -30°C to +65°C and storage range from -40°C to +85°C, with 95% non-condensing humidity tolerance, ensures reliable performance in harsh industrial conditions.

Installed in a single full-height rear slot, the 128240-01 enhances the functionality of the 3500/42M monitor by providing consistent signal conditioning and secure external terminations. Unlike older modules that required direct frame wiring, this module improves wiring flexibility, reduces installation errors, and supports the accurate measurement and monitoring of machinery vibration and displacement.

The 128240-01 Bently Nevada Prox/Seismic I/O Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 128240-01 Prox/Seismic I/O Module 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 128240-01 Prox/Seismic I/O Module Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 128240-01
  • Condition New Original ready stock
  • Product Family 3500/42M,136595-01,149986-01
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.
  • Operating Temperature Range: Standard operating temperature is -30°C to +65°C. In high-temperature environments, ensure good ventilation or air conditioning within the cabinet.
  • Humidity Requirements: Adaptable to non-condensing relative humidity of 5% to 95%. For high-humidity environments or environments containing corrosive gases (such as chemical plants), it is recommended to install a protective coating or a sealed cabinet.
  • Electromagnetic Compatibility (EMC): Meets industrial anti-interference standards. The module housing has good electromagnetic shielding capabilities, resisting electromagnetic noise generated by high-power motors or frequency converters in the field.
  • Vibration/Shock Resistance: Meets industrial-grade vibration resistance standards, enabling long-term stable installation in control cabinets near rotating machinery.
  • Rear Slot Alignment: This module must be installed in the rear slot corresponding to the 3500/42M main module. During installation, ensure proper pin protection and tighten the positioning screws after full insertion to achieve good grounding.
  • External Terminal Connection: The 128240-01 has no terminal blocks on the back; a dedicated cable (such as the 135031 series) must be used to connect to the external terminal block. During upgrades, ensure the cable connectors are secure to prevent signal interruptions.
  • Hot-Swapping Operation: Although live replacement is supported, it is recommended to bypass the protection logic of the corresponding channel before replacement to prevent transient surges during insertion/removal that could cause interlock shutdown.
  • Software Synchronization Update: If upgrading from a standard I/O module to an external terminal type, the "I/O Module Type" option must be changed in the 3500 Rack Configuration software, and the configuration must be re-downloaded.
  • Large Steam Turbine Generator Sets: Used to aggregate multiple radial vibration and axial displacement signals distributed across the turbine casing to a remote junction box.
  • High-density cabinet management: In situations where space is limited at the back of the 3500 frame, this module allows wiring to be routed to external terminal blocks, facilitating routine signal measurements and wiring troubleshooting by maintenance personnel.
  • Casing vibration monitoring (seismic): Connects to an accelerometer or velocity sensor (such as Velomitor) to monitor the vibration level of pump, fan, or motor casings.
  • Explosion-proof safety isolation: Commonly used as the front-end interface for internal/external barriers in mechanical protection systems for hazardous areas such as oil pump rooms in the petrochemical industry.
Description
The Bently Nevada 128240-01 is a dedicated rear I/O module for the 3500/42M Proximitor Seismic Monitor. It serves as an intermediate interface connecting the internal processing modules of the 3500 frame with external terminal blocks, facilitating secure connections for 1 to 4 proximity, velocity, or acceleration transducer signals. With typical power consumption of 7.7 watts, input impedance of 10 kΩ for Proximitor and acceleration inputs, and output impedance of 550 Ω, the 128240-01 ensures high-fidelity signal transmission for critical machinery protection.

Compared to its predecessor, the 128239-01 I/O module, the 128240-01 offers enhanced signal conditioning and greater compatibility with the 3500/42M monitor. While 128239-01 supported fewer channels and limited environmental tolerances, 128240-01 supports a full four-channel configuration, operates reliably from -30°C to +65°C, and can withstand storage from -40°C to +85°C with 95% non-condensing humidity. These improvements make the 128240-01 more robust for industrial vibration and displacement monitoring applications.

Designed for installation in a single full-height rear slot, the 128240-01 seamlessly integrates with the 3500/42M Proximitor Seismic Monitor, which protects machinery by continuously comparing measured parameters against configured alarm setpoints. The 128240-01 enhances system reliability by providing consistent signal conditioning and transmission, reducing the risk of false alarms or signal degradation compared to earlier modules.

With external terminations, the 128240-01 simplifies field wiring and maintenance. By comparison, modules like 128239-01 required more direct frame wiring, which increased installation complexity and risk of signal interference. The 128240-01 thus combines easy installation, reliable environmental tolerance, and robust signal integrity, making it an optimal choice for modern 3500/42M monitoring systems.
Alternative Names
128229-01 128240-02 128229-02 125720-01
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

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.
Why are external terminations important for 128240-01?
They simplify field wiring, reduce installation errors, and prevent signal degradation compared to direct frame wiring in older modules like 128239-01.
How does 128240-01 contribute to machinery protection?
By providing reliable signal conditioning and transmission to the 3500/42M monitor, it enables accurate comparison against configured alarm setpoints, reducing false alarms and ensuring timely machine protection.
How does 128240-01 integrate with the 3500/42M monitor?
It installs in a single full-height rear slot and provides an intermediate interface for secure connection to external terminal blocks.
How many transducer signals can 128240-01 accept?
The module supports 1 to 4 transducer signals, allowing flexible four-channel monitoring.