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        Bently Nevada 125720-01
        Bently Nevada 125720-01
        Bently Nevada 125720-01
        Bently Nevada 125720-01
        Bently Nevada 125720-01
        Bently Nevada 125720-01
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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power offers original Bently Nevada 125720-01 4-channel relay output modules, ensuring precise hardware voting logic and dependable automatic trip signaling to protect your critical machinery systems.

        125720-01

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        The 125720-01 is a 3500/32M 4-Channel Relay Output Module designed for the Bently Nevada 3500 Series monitoring system. This full-height module provides four independently programmable relay outputs with Alarm Drive Logic using AND.
        In Stock
        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 125720-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          125720-01
        • Product Family:
          3500 System
        • Product Type:
          4-Channel Relay Output Module
        • Stock:
          30
        • Number of Outputs:
          4 independent relay outputs
        • Programming:
          Bently Nevada 3500 Rack Configuration Software
        • Alarm Drive Logic:
          AND and OR logic using Alert, Danger, Not-OK, or PPL statuses
        • Input Sources:
          Any monitor channel or combination of channels in the rack
        • Module Location:
          Any slot to the right of the Transient Data Interface Module
        • Key Benefit:
          Model 125720-01 enables sophisticated voting schemes without external logic controllers, combining Alert, Danger, Not-OK, and PPL statuses from any monitor channels.
        • Weight:
          0.46 kg
        • Estimated shipping dimensions:
          2.5x11x14cm
        • Tariff Code:
          8517795000
        • 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 Application Operating Environment Monitoring

        Features:

        • The 125720-01 features four independently programmable relay outputs with AND and OR logic capabilities.
        • This model accepts input from Alert, Danger, Not-OK, and PPL statuses from any monitor channel in the rack.
        • The 125720-01 is a full-height module that can be placed in any slot to the right of the Transient Data Interface Module.
        The 125720-01 provides essential alarm output functions common to the 3500 system, and is a critical component directly affecting the ability to drive external protection devices. Programming for the Alarm Drive Logic uses AND and OR logic, and can utilize alarming inputs including Alert and Danger statuses, Not-OK conditions, or individual PPLs from any monitor channel. The 125720-01 enables users to create sophisticated voting schemes such as 1-out-of-2 or 2-out-of-3 logic without external controllers.

        For applications requiring configurable alarm outputs, the 125720-01 is programmed using the Bently Nevada 3500 Rack Configuration Software. Each of the four relay outputs can be configured independently, enabling customized alarm responses for different protection zones or equipment types. The 125720-01 can combine inputs from any monitor channel or any combination of monitor channels in the rack, providing tailored protection for critical machinery.

        The 125720-01 solves the critical pain point of flexible alarm output configuration in machinery protection systems by providing four independently programmable relays with AND/OR logic capabilities. This eliminates the need for external logic controllers and simplifies system design. The 125720-01 ensures that alarm conditions are reliably communicated to plant control systems, shutdown devices, and annunciator panels, providing comprehensive protection for critical assets such as turbines, compressors, and generators.

        The 125720-01 Bently Nevada  4-Channel Relay Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Bently Nevada 125720-01 4-Channel Relay Output Module Manuals, Datasheets, Drivers, 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 125720-01 4-Channel Relay Output Module Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 125720-01
        • Condition New Original ready stock
        • Product Family 125720-02,125720-03,125720-04,125760-01
        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.
        • Critical Equipment Protection: Provides automatic shutdown (Trip) or programmed alarm outputs for large steam turbines, compressors, generators, and pump sets.
        • Industrial Sector: Applied to industries with extremely high reliability requirements, such as oil and gas (refining, transportation), power (nuclear, thermal power), chemical processing, and manufacturing.
        • Automation Integration: Acts as a bridge between the 3500 system and external control systems (such as PLCs or DCSs), used for relaying signals or triggering auxiliary equipment.
        • Humidity Limits: Up to 95% non-condensing humidity.
        • Safety Certifications: Compliant with ATEX, IECEx, and CSA standards, ensuring compliance for operation in hazardous environments.
        • Physical Characteristics: Compact modular design (approximately 0.4 kg), typically mounted in a full-height slot at the back of a 3500 rack.
        • Independent Programmable Outputs: Features 4 independent relay channels, each configurable individually.
        • Alarm Drive Logic: Supports custom voting logic, such as using AND and OR logic to combine alarm statuses for multiple monitoring channels.
        • Can respond to "Alert," "Danger," "Not-OK," or individual status signals for any channel within the rack.
        Description
        The 125720-01 operates as a 3500/32M 4-Channel Relay Module within the Bently Nevada 3500 Series monitoring system, providing four independent relay outputs for machinery protection. 

        The 125720-01 provides essential alarm output functions common to the 3500 system, and is a critical component directly affecting the ability to drive external protection devices. Programming for the Alarm Drive Logic uses AND and OR logic, allowing complex voting schemes tailored to specific application requirements. 

        For applications requiring configurable alarm outputs, the 125720-01 is programmed using the Bently Nevada 3500 Rack Configuration Software. Each of the four relay outputs can be configured independently, enabling customized alarm responses for different protection zones or equipment types. 

        The 125720-01 solves the critical pain point of flexible alarm output configuration in machinery protection systems by providing four independently programmable relays with AND/OR logic capabilities. This enables users to create sophisticated voting schemes without requiring external logic controllers. 
        Alternative Names
        12572O-O1 I25720-0I 125720 01 125720-02 125760-01 125768-01 125704-01 125736-01
        Technical notes
        The Bently Nevada 125720-01 is actually a GE Mark VIe Discrete Input Module (VDIX) designed for safety-critical gas and steam turbine control. It provides 32 optically isolated 24V DC input channels arranged in a Triple Modular Redundant (TMR) architecture.Each channel includes a diagnostic feedback path to verify the actual state of the field device, ensuring fault detection.
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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.
        VIEW ALL FAQS
        What logic can be used to program the 125720-01 relay outputs?
        Each relay output can be programmed using Alarm Drive Logic with AND and OR combinations of Alert, Danger, Not-OK, and PPL statuses from any monitor channel in the rack.
        How many 125720-01 modules can be installed in a 3500 rack?
        Any number of 125720-01 modules can be placed in any slots to the right of the Transient Data Interface Module, providing flexible expansion for multiple relay outputs.
        What software is used to configure the 125720-01?
        The Bently Nevada 3500 Rack Configuration Software is used to program the Alarm Drive Logic for each of the four relay outputs independently.
        What is the availability status of the 125720-01?
        The 125720-01 is available for repair only, indicating it is a legacy component supported through repair services rather than new sales.

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