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        Bently Nevada 3500/50M 288062-02
        Bently Nevada 3500/50M 288062-02
        Bently Nevada 3500/50M 288062-02
        Bently Nevada 3500/50M 288062-02
        Bently Nevada 3500/50M 288062-02
        Bently Nevada 3500/50M 288062-02
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        • Lifecycle status

          Active / Available from OEM
          Apter Power supplies verified Bently Nevada 3500 Series hardware to ensure secure speed sensor signal routing, maintain overspeed protection system reliability, and prevent unexpected plant downtime.

        3500/50M 288062-02

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        The 3500/50M 288062-02 is a Bently Nevada 2‑channel tachometer module for proximity probes or magnetic pickups, measuring shaft speed, rotor acceleration, and direction with programmable alarms.
        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 3500/50M 288062-02

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3500/50M 288062-02
        • Product Family:
          3500 System
        • Product Type:
          2‑channel Tachometer Module
        • Stock:
          1
        • Number of Channels:
          2
        • Input Transducers:
          Proximity probes or magnetic pickups
        • Input Signal Range:
          +10.0 V to -24.0 V (internally limited)
        • Input Impedance:
          20 kΩ (standard), 40 kΩ (TMR), 7.15 kΩ (internal barrier)
        • Power Consumption:
          5.8 W typical
        • Max Input Frequency:
          20 kHz
        • Max Full Scale Range:
          99,999 rpm
        • Manual Threshold Range:
          +9.5 Vdc to -23.5 Vdc
        • Manual Threshold Min Amplitude:
          500 mV peak‑to‑peak
        • Buffered Output Impedance:
          550 Ω
        • Recorder Output:
          4‑20 mA
        • Recorder Resolution:
          0.3662 μA/bit (±0.25% at 25°C)
        • Transducer Power Supply:
          24 Vdc, 40 mA max per channel
        • Recorder Update Rate:
          approx. 100 ms
        • Rack Space:
          1 full‑height front slot
        • Hazardous Area Approvals:
          Class I, Div 2; ATEX/IECEx Zone 2
        • Weight:
          0.9 kg
        • Estimated shipping dimensions:
          2.8x25.8x24cm
        • 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 Diagnostic Protection Installation and Upgrade

        Features:

        • ±0.1 rpm (<100 rpm), ±1 rpm (100‑10,000 rpm), ±0.01% (>10,000 rpm); maximum input frequency 20 kHz.
        • Can supply conditioned Keyphasor signals to the 3500 rack backplane for use by other monitors; eliminates separate Keyphasor module.
        • Speed monitoring with alarming, speed band alarming, zero speed notification, rotor acceleration alarming, reverse rotation notification.
        The 3500/50M 288062-02 provides exceptional speed measurement accuracy over a wide range. For low speeds below 100 rpm, accuracy is ±0.1 rpm – essential for startup monitoring and zero speed detection. In the 100‑10,000 rpm range, accuracy is ±1 rpm. Above 10,000 rpm, accuracy is ±0.01% of true shaft speed, meaning at 50,000 rpm the error is only ±5 rpm. The maximum full‑scale range is 99,999 rpm, with a maximum input frequency of 20 kHz. The module can accept inputs from proximity probes (minimum frequency 0.0167 Hz / 1 rpm with 1 event/revolution) or passive magnetic pickups (minimum frequency 3.3 Hz).

        In traditional 3500 rack configurations, a dedicated Keyphasor module was required to provide once‑per‑turn reference signals to other monitors (e.g., vibration monitors for phase measurement). The 3500/50M 288062-02 eliminates the need for this separate module. When configured appropriately, the tachometer module conditions the raw transducer signal (from a proximity probe or magnetic pickup) into a clean Keyphasor pulse and supplies it directly to the 3500 rack backplane. Other monitors in the same rack – such as 3500/40M (Proximitor), 3500/42M (Proximitor/Seismic), and 3500/60 (Temperature) – can use this Keyphasor signal for phase referencing.

        The 3500/50M 288062-02 is not just a simple speed monitor; it offers six configurable monitoring modes. Speed Monitoring with Setpoint Alarming provides basic high/low speed alarms. Speed Band Alarming triggers when speed falls within a defined band – useful for detecting operation at critical speeds. Zero Speed Notification indicates when the shaft stops. Rotor Acceleration Alarming monitors acceleration rates (rpm per minute), important for detecting overspeed transients or startup overshoots. Reverse Rotation Notification detects when the shaft turns backward, which can damage pumps and compressors. The module also includes a peak hold feature that stores the highest speed, highest reverse speed, and number of reverse rotations. These stored values can be reset. Each channel has a recorder output (4‑20 mA) proportional to full‑scale range (rpm or rpm/min).

        The 3500/50M 288062-02 Bently Nevada Tachometer Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

        Bently Nevada 3500/50M 288062-02 Tachometer 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 3500/50M 288062-02 Universal AC Power Supply Specs

        General

        • Manufacturer Bently Nevada
        • Model 3500/50M 288062-02
        • Condition New Original ready stock
        • Product Family 3500/40M,3500/20,3500/45,3500/60
        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.
        • Power Generation & Petrochemical Plants: Monitored equipment includes steam/gas turbines, multi-stage centrifugal compressors, and heavy-duty industrial pumps.
        • Asset Performance Types: Used on standard single-shaft machines, complex gearboxes, and dual-spool/multi-shaft drivers.
        • System Integration: Functions as a localized speed server inside the 3500 rack by conditioning and supplying Keyphasor signals directly to the backplane. This avoids needing an independent Keyphasor module.
        • Speed & Speed Band Alarming: Tracks absolute RPM up to 99,999 RPM and alarms if speed drifts outside specific, safe operational limits.
        • Rotor Acceleration Alarming: Measures the rate of change of speed (RPM/min). It protects multi-million dollar turbine rotors from catastrophic mechanical stresses during rapid acceleration periods.
        • Zero Speed Notification: Verifies absolute standstill conditions. This ensures interlocks can safely permit turning-gear engagement or auxiliary maintenance steps.
        • Reverse Rotation Notification: Instantly detects backward shaft spinning. This prevents severe thrust-bearing or aerodynamic destruction on compressors caused by fluid backflow.
        • Slot Configuration: The 3500/50M system takes a two-part vertical stack. The front slot of the 19-inch rack houses the main 3500/50M Monitor Card. The corresponding rear slot takes the 288062-02 I/O module.
        • Wiring Method: The 288062-02 utilizes Internal Terminations. Transducer field cables route straight to the Euro-style terminal strip on the rear I/O plate without needing external termination blocks.
        • Module Hot-Swapping: The 3500 system architecture naturally supports hot-plugging. However, it is highly recommended to engage the Rack Reset/Bypass switch or trip inhibition relays before removing cards to ensure no accidental automated machinery trips occur.
        Description
        The 3500/50M 288062-02 is a 2‑channel tachometer module for the Bently Nevada 3500 monitoring system. It accepts inputs from proximity probes or magnetic pickups to determine shaft rotative speed, rotor acceleration, or rotor direction. The module compares these measurements against user‑programmable alarm setpoints and generates alarms when violated. 

        When using the 3500/50M 288062-02, engineers can configure the module for speed monitoring with setpoint alarming, speed band alarming, zero speed notification, rotor acceleration alarming, or reverse rotation notification. It can supply conditioned Keyphasor signals to the backplane for use by other monitors, eliminating the need for a separate Keyphasor module. 

        The 3500/50M 288062-02 has front panel LEDs: OK (operating properly), TX/RX (communication), and Bypass (bypass mode). Each channel has a buffered transducer output on a coaxial connector (short‑circuit and ESD protected, 550 Ω output impedance). Recorder outputs provide 4‑20 mA signals proportional to full‑scale range (rpm or rpm/min). 

        For legacy Bently Nevada 3500 system expansions, the 3500/50M 288062-02 provides critical tachometer monitoring. The module supports 1 to 255 events per revolution for rotor acceleration and zero speed channel types, and 0.0039 to 255 events per revolution for all other types. Maximum full‑scale range is 99,999 rpm, with a maximum input frequency of 20 kHz.
        Alternative Names
        3500/5OM 288O62-O2 3500 50M 288062 02 3500/50M 288062-02 3500/40M 3500/20 3500/45 3500/60
        Technical notes
        The 3500/50M 288062-02 is a Bently Nevada 2‑channel tachometer module for the 3500 monitoring system. It measures shaft speed, rotor acceleration, and direction using proximity probes or magnetic pickups. Accuracy ranges from ±0.1 rpm at low speeds to ±0.01% above 10,000 rpm, with a maximum of 99,999 rpm.
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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
        How accurate is 3500/50M 288062-02 for speed measurement?
        RPM accuracy is ±0.1 rpm below 100 rpm, ±1 rpm from 100‑10,000 rpm, and ±0.01% of true shaft speed above 10,000 rpm. Maximum full scale is 99,999 rpm with a 20 kHz input frequency limit. This ensures precise overspeed detection
        Does 3500/50M 288062-02 supply Keyphasor signals?
        Yes. The module can be configured to supply conditioned Keyphasor signals to the 3500 rack backplane for use by other monitors. This eliminates the need for a separate Keyphasor module, saving rack space and reducing system cost.
        Can 3500/50M 288062-02 detect reverse rotation?
        Yes. The module supports a reverse rotation notification configuration option. It measures and records reverse speed, reverse peak speed, and the number of reverse rotations. This is critical for applications where reverse rotation could damage equipment.
        What alarm delays are available on 3500/50M 288062-02?
        Alarm 1 time delay is programmable from 1 to 60 seconds in 1‑second intervals. Alarm 2 time delay is programmable from 1 to 60 seconds in 0.1‑second intervals. Alarm setpoints are adjustable from 0‑100% of full scale.

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