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        3701/55 323073-01

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        Bently Nevada 3701/55 323073-01 ADAPT ESD Relay Output Module is a 4-channel electromechanical relay card engineered for emergency shutdown device systems in critical rotating machinery.
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        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 3701/55 323073-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3701/55 323073-01
        • Product Family:
          3701/55 ADAPT (ESD) Emergency Shutdown Device
        • Product Type:
          ADAPT ESD 4-Channel Relay Output Module
        • Stock:
          1
        • Total Relays per Module:
          5 SPDT Relays (4 Configurable Trip Relays + 1 System Protection Fault Relay)
        • Channel Voting Architecture:
          CH 1/2 (2oo3 Voted or 1oo1 Independent); CH 3/4 (1oo1 Independent Only); OK Relay (De-energize to trip)
        • Relay Contact Type:
          Single Pole-Double Throw (SPDT), Normally Open or Normally Closed
        • AC Contact Switching Capacity:
          Max 5A / 250 Vac / 1500 VA
        • DC Contact Switching Capacity:
          Max 5A / 250 Vdc / 150 VA
        • Minimum Switch Current:
          100 mA @ 12 Vdc
        • Nominal Transition Time:
          8 ms
        • Enclosure Construction:
          Cast Aluminum Module Case with Black Powder Coat Finish
        • Operating Temperature:
          -30°C to +65°C (-22°F to +149°F)
        • Storage Temperature:
          -45°C to +85°C (-49°F to +185°F)
        • Operating Humidity:
          0% to 95% non-condensing
        • Vibration & Shock Resistance:
          Compliant with IEC 60068-1 (3g @ 3-57 Hz, 5g @ 57-500 Hz) and IEC 60068-2 (15g 11ms operational shock)
        • Safety & Hazardous Area Certifications:
          SIL 3 Certified (IEC 61508 / IEC 62061), cNRTLus Class I Div 2 / Zone 2, ATEX / IECEx Zone 2
        • Weight:
          0.6 kg
        • Estimated shipping dimensions:
          15.8 cm x 2.8 cm x 15.8 cm
        • Tariff Code:
          8537101190
        • 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 Applications Configuration & Programming Monitoring & Control Efficiency

        Features:

        • Triple Modular Redundant (TMR) architecture support with sub-10ms output execution times.
        • Equipped with 5 SPDT relays, including 4 user-programmable channels and 1 dedicated Protection Fault relay.
        • Supports 2-out-of-3 (2oo3) voted and 1-out-of-1 (1oo1) independent relay contact outputs.
        Part number 323073-01 represents the standard 4-channel electromechanical relay output module engineered for the 3701/55 ADAPT Emergency Shutdown Device (ESD) system.

        The module executes automated machinery protection and safety shutdown functions by interfacing directly with the system's triple processing architecture to actuate final control elements on critical rotating equipment.

        Installation requires mounting onto a 289761-01 terminal base in a vertical orientation within an enclosure providing at least 9.0 inches of depth to maintain proper convection cooling.

        The Bently Nevada 3701/55 323073-01 Relay Output Module availability is supported by the manufacturer (OEM).
        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.
        • Emergency shutdown actuation for high-capital steam, gas, and hydro power generation turbines.
        • Automated protective trip execution for large industrial process compressors and turbomachinery trains.
        • High-reliability safety shutoff interface for critical rotating equipment in hazardous oil and gas facilities.
        • Configured graphically using official Bently Nevada Monitor Configuration Software (PN: 103M1345-01).
        • Relay channels independently set for normally energized (de-energize to trip) or normally de-energized operation.
        • Channel voting logic configurable for 2oo3 or 1oo1 logic on Channels 1 and 2, and 1oo1 on Channels 3 and 4.
        • Provides continuous real-time execution of automated trip logic to protect critical machinery from overspeed and severe fault conditions.
        • Integrates seamlessly with the 3701/55 ADAPT ESD system architecture to receive triple-redundant logic outputs from processing modules.
        • Enables localized manual or automatic reset actions based on system safety configuration and plant operational requirements.
        • Delivers rapid output transition response times under 10 milliseconds to ensure instant emergency trip execution.
        • Designed for high-availability continuous operation with low internal power consumption and high contact reliability.
        • High-density 4-channel form factor optimizes control cabinet panel space within compact machinery protection system layouts.
        Description
        Bently Nevada 3701/55 323073-01 Standard Relay Output Module plays a vital role in executing emergency shutdown actuation within the ADAPT ESD machinery protection framework. The module provides electromechanical contact outputs triggered directly by the system's triple processing architecture to protect critical rotating assets such as steam turbines, gas turbines, hydro turbines, and process compressors.

        Engineered with high functional availability and self-diagnostics, each Bently Nevada 3701/55 323073-01 card contains five distinct single-pole double-throw (SPDT) relays configured for specific safety tasks. Channels 1 and 2 support TMR 2oo3 voted logic or independent operation, Channels 3 and 4 serve dedicated 1oo1 independent voting logic, and an extra dedicated OK relay provides continuous protection system fault status monitoring.

        The Bently Nevada 3701/55 323073-01 module is housed in a cast aluminum enclosure built for harsh industrial environments and secure baseplate mounting. Operating seamlessly with the Bently Nevada Monitor Configuration software, it enables engineers to implement energize-to-trip or de-energize-to-trip logic with sub-10ms output execution times.
        Alternative Names
        3701/55 323073-01 3701/55-323073-01 323073-o1 323O73-O1 32307301 370155 32307301 ADAPT ESD 323073-01 Relay Card Bently Nevada 3701/55 323073-01
        Technical notes
        The Bently Nevada 3701/55 323073-01 relay module must be installed onto a vertically mounted 289761-01 terminal base inside an enclosure with at least 9.0 inches (22.86 cm) of depth to maintain proper natural convection cooling.
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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 relay voting modes are supported on the Bently Nevada 3701/55 323073-01 module?
        Channels 1 and 2 support configurable TMR 2oo3 voted logic or 1oo1 independent voting, while Channels 3 and 4 operate exclusively in 1oo1 independent voting mode.
        How many Bently Nevada 3701/55 323073-01 modules are required for a complete ADAPT ESD system?
        A standard triple modular redundant (TMR) 3701/55 ADAPT ESD system utilizes exactly three 323073-01 relay modules alongside three CPU processing modules.
        What are the relay contact voltage and power restrictions for SIL 3 installations using Bently Nevada 3701/55 323073-01?
        For certified SIL 3 applications, relay contact voltages must remain below 250 Vac/Vdc, current under 1 A AC/DC, and contact power limited to 250 VA AC or 150 W DC.
        Which software is used to configure relay trip logic on Bently Nevada 3701/55 323073-01?
        System logic and relay control states are programmed graphically using the official Bently Nevada Monitor Configuration Software (PN: 103M1345-01).
        What is the difference between 323073-01 and 323073-02? Are they interchangeable?
        The two are not interchangeable. Model 323073-01 is the standard contact version (Standard Relay Output Module); it holds explosion-proof certifications such as CSA, ATEX, and IECEx, making it suitable for Class I Div 2 / Zone 2 hazardous areas. Model 323073-02 is the gold-plated contact version; it is suitable for low-current signals but does not carry hazardous area explosion-proof certification.
        How can I request pricing, lead time, or an official quotation for Bently Nevada 3701/55 323073-01?
        You can submit a direct request for quote (RFQ) with your desired part number (323073-01) and quantity to our sales engineering team via email or online contact form.

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