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        Bently Nevada 3500/53 133388-01
        Bently Nevada 3500/53 133388-01
        Bently Nevada 3500/53 133388-01
        Bently Nevada 3500/53 133388-01
        Bently Nevada 3500/53 133388-01
        Bently Nevada 3500/53 133388-01
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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power stocks genuine Bently Nevada 133388-01 electronic overspeed boards, providing fully tested, premium replacement components to guarantee continuous turbine protection and fault-tolerant operation within your 3500 rack system.

        3500/53 133388-01

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        1001 reviews ｜ Need a Specific Revision?
        The Bently Nevada 3500/53 133388-01 is a high-reliability, fast-response overspeed detection module designed for redundant tachometer systems in critical machinery protection applications.
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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 3500/53 133388-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3500/53 133388-01
        • Product Family:
          3500 System
        • Product Type:
          Electronic Overspeed Detection Module
        • Stock:
          5
        • Inputs Signal:
          Each Overspeed Detection module accepts a single transducer signal from a proximity probe transducer or magnetic pickup.
        • Input signal range:
          +10.0 V to -24.0 V
        • Input Impedance:
          20 k Ω.
        • Power Consumption:
          8.0 watts, typical.
        • Transducers:
          Bently Nevada 3300 8 mm Proximitor 3300 16 mm HTPS, 7200 5 mm, 8 mm, 11 mm, and 14 mm Proximitor; 3300 RAM Proximitor, or Magnetic pickups.
        • 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:
          95%, non-condensing
        • Weight:
          0.84 kg
        • Estimated shipping dimensions:
          24x25.8x2.5cm
        • 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 Specifications Applications Interoperability Certifications & Standards

        Features:

        • Interface Between the Overspeed Detection System and 3500 Rack Backplane
        • Combines Capability of Electronic Overspeed Detection with Redundant Tachometer Support
        • Operates in Conjunction with the M Series and Standard 3500 Monitors
        The 3500/53 133388-01 operates as the Electronic Overspeed Detection System in a 3500 rack, providing highly reliable, fast response overspeed protection to all modules within the system. It continuously monitors incoming tachometer signals and detects overspeed conditions with rapid response time, distributing protection signals through the rack backplane to support safe shutdown operation of critical rotating machinery. Seamless detection capability is standard with the 3500/53, however using an optional Redundant Voting Configuration will allow 2-out-of-2 or 2-out-of-3 (recommended) voting systems in the event of a single module failure. The 3500/53 has made improvements in several areas over previous overspeed detection designs in addition to incorporating API Standards 670 and 612 compliance within the 3500 rack.

        The 3500/53 provides essential overspeed protection functions common to the entire rack, and is a critical component of the safety instrumented system, directly affecting the proper, safe operation of the overall machinery protection system. One or multiple 3500/53 modules are required per rack depending on the desired voting redundancy level. The 3500/53 occupies only a single full-height slot in the rack and can be located in any available monitor slot position.

        For Dual or Triple Voting Redundancy applications, the 3500 System requires additional 3500/53 modules installed in the designated slots. In addition to standard single module operation, the redundant voting configuration also performs automatic comparison and decision logic. The 3500/53 voting configuration executes protection decisions using the internal circuitry specified in the module options. Using this method, the redundant voting system continually monitors the health of all 3500/53 modules. If the system detects that one 3500/53 module is no longer providing reliable detection (outside configured tolerance levels), it will automatically continue protection based on the remaining modules and place an event in the System Event List.

        The 3500/53 133388-01 Bently Nevada  Electronic Overspeed Detection System may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Bently Nevada 3500/53 133388-01 Electronic Overspeed Detection System 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 3500/53 133388-01 Electronic Overspeed Detection System Specs

        General

        • Manufacturer Bently Nevada
        • Model 3500/53 133388-01
        • Condition New Original ready stock
        • Product Family 133396-01,134129-01,134939-01
        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 Turbomachinery: Specifically used for steam, gas, and hydro turbines.
        • Compression Systems: Monitoring of large industrial compressors in oil and gas or chemical processing.
        • Power Generation: Protection for electrical generators.
        • Emergency Shutdown (ESD) Systems: Functions as a critical input to trigger automatic machine stops via fuel control valves or circuit breakers.
        • Sensors: Compatible with various speed sensors, including Bently Nevada 3300 XL 8mm/16mm Proximitors, 7200 series Proximitors, and passive magnetic pickups.
        • System Integration: Connects directly with Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), and SCADA platforms through relay outputs.
        • Software & Networking: Fully compatible with Bently Nevada System 1 software for condition monitoring and supports communication via Ethernet or Modbus TCP/IP.
        • Rack Architecture: Requires a standard 3500 series rack with redundant power supplies and a 3500/22 Transient Data Interface (TDI) for advanced diagnostics.
        • API Standards: Complies with API 670 (Machinery Protection Systems) and API 612 (Petroleum, Petrochemical, and Natural Gas Industries—Steam Turbines).
        • Safety Voting Systems: Configurable for 2-out-of-2 or 2-out-of-3 (recommended) voting logic to ensure high reliability and eliminate single points of failure.
        • Environmental & Safety: Features CE Mark compliance and hazardous area approvals (specific approvals like ATEX/IECEx are typical for the 3500 series).
        • Response Time: Meets the critical requirement for fast response, typically triggering a trip signal in less than 10 milliseconds.
        Description
        The Bently Nevada 3500/53 133388-01 Overspeed Detection Module is engineered to provide fast and reliable speed monitoring for industrial machinery. It is part of the 3500 Series Machinery Protection System and is intended for use in overspeed protection systems compliant with API Standards 670 and 612. Each module accepts a single transducer input from proximity probes or magnetic pickups, enabling precise monitoring of machine rotation speeds. Input signals range from +10.0 V to -24.0 V, with an input impedance of 20 kΩ.

        The Bently Nevada 3500/53 133388-01 is compatible with a variety of Bently Nevada transducers, including 3300 8 mm and 16 mm Proximitor, 7200 5 mm, 8 mm, 11 mm, and 14 mm Proximitor, 3300 RAM Proximitor, and standard magnetic pickups. LED indicators provide operational status: the OK LED shows proper module operation, the TX/RX LED indicates communication with other 3500 rack modules, the Bypass LED signals bypass mode, and the Test Mode LED confirms test mode activation.

        The 3500/53 operates reliably in temperatures from -30 °C to +65 °C (-22 °F to +149 °F) and can be stored safely between -40 °C and +85 °C (-40 °F to +185 °F). The module tolerates up to 95% non-condensing humidity and consumes approximately 8.0 watts during normal operation. For redundant overspeed protection, 3500/53 modules can be combined into 2-out-of-2 or 2-out-of-3 voting systems and require installation in a 3500 rack with redundant power supplies.

        Designed for mission-critical machinery, the 3500/53 133388-01 module ensures accurate, high-speed detection and system reliability, reducing the risk of overspeed-related mechanical failure while supporting API-compliant safety configurations.
        Alternative Names
        35OO/53 133388-O1 3500/53 I33388-0I 3500/53 1333BB-01 3500-53 133388-01 350053 13338801 3500 53 133388 01
        Technical notes
        The Bently Nevada 3500/53 133388-01 must be housed within a dedicated 3500 system rack equipped with redundant power supplies to sustain its certified safety functions. To implement complete Emergency Shutdown (ESD) connectivity, the module requires configuration via 3500/01 software alongside a matching rear I/O termination block (such as part number 133396-01).
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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 are the minimum software and firmware baseline versions required to incorporate the Bently Nevada 3500/53 133388-01 into an existing control system rack?
        To successfully integrate the Bently Nevada 3500/53 133388-01, your 3500 system architecture must utilize 3500/20 Rack Interface Module (RIM) firmware at Revision G or later. Additionally, the system configuration requires 3500/01 Main Configuration Software version 2.00 or later, 3500/02 Data Acquisition Software version 2.03 or later, and 3500/03 Display Software version 1.13 or higher to establish normal telemetry.
        How does the Bently Nevada 3500/53 133388-01 handle physical sensor input connections, and what are the specific I/O terminal impedance details?
        The Bently Nevada 3500/53 133388-01 links to the field through a paired rear-facing Overspeed Detection I/O module (e.g., 133396-01) featuring internal or external terminal blocks. It provides an input impedance rating of 20 kΩ across its active terminals and supplies a continuous -24 Vdc transducer power feed capped at 40 mA to drive proximity probes or passive magnetic pickups directly.
        What diagnostic depths can be monitored using the frontend LEDs on the Bently Nevada 3500/53 133388-01 main faceplate?
        The Bently Nevada 3500/53 133388-01 provides comprehensive status diagnostics through its integrated LED array. The "OK" LED indicates proper internal sub-circuit health, the "TX/RX" LED flashes to track backplane communication, the "Bypass" LED reflects maintenance states, the "Test Mode" LED signifies validation tracking, and independent "Alarm" LEDs flash if a dedicated relay trip parameter threshold is triggered.
        Can the Bently Nevada 3500/53 133388-01 export speed parameters or trip register values directly to third-party DCS or PLCs?
        Yes. The Bently Nevada 3500/53 133388-01 passes internal primary values like Speed and Peak Speed over the internal backplane bus to a 3500/92 Communication Gateway Module. This allows those parameters to be mapped into contiguous registers and read by third-party systems via Modbus RTU/TCP or Ethernet/IP, while independent 4-20mA analog loop recorder connections export speed values directly from the rear I/O.
        In what specific hazardous areas or environmental conditions can the Bently Nevada 3500/53 133388-01 be deployed safely?
        The Bently Nevada 3500/53 133388-01 is rated for harsh climates, supporting operating temperatures from -30°C to +65°C at 95% non-condensing humidity. It features CSA/NRTL/C hazardous area certifications, approving it for Class I, Division 2, Groups A, B, C, and D environments under Temperature Code T4, provided it is housed within a sealed industrial cabinet.
        What is the recommended step-by-step installation practice for inserting the Bently Nevada 3500/53 133388-01 into an operational rack?
        First, verify that a corresponding 3500/53 I/O Module is fully locked into the rear slot directly opposing the designated front slot. Utilizing a grounding wrist strap to prevent ESD damage, align the Bently Nevada 3500/53 133388-01 with the front chassis guide rails, slide the module firmly into the backplane connectors, and torque the top/bottom panel thumbscrews to secure the unit in place.

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