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      3300/52-01-00-00

      Reverse Rotation Monitor
      Ships by Friday, November 6
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Bently Nevada 3300/52-01-00-00 detects reverse shaft rotation from two proximity-transducer signals and provides forward/reverse speed indication in a 3300 rack.
      • Manufacturer part number
        3300/52-01-00-00
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        5.1cm x 32cm x 20.4cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete 3300/52-01-00-00 marking, quantity and label photos so the application configuration can be checked.

      • 1

        Confirm the offer

        Review the quoted condition, included items and expected dispatch date. Confirm the rear relay/input module, terminal accessories, external enable contact and transducer systems separately in the quotation.

      • 2

        Arrange dispatch

        Confirm delivery details and receive the tracking reference when the shipment is arranged.

      • Match the complete marking

        Include 3300/52-01-00-00 and any revision or assembly number visible on the item. Keep the exact reference on your enquiry and quotation.

      • Check the offered item before ordering

        Request available label and connector photos. Have your maintenance team compare the offered 3300/52-01-00-00 with the installed equipment and applicable Bently Nevada documentation.

      Technical specifications for 3300/52-01-00-00

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        3300/52-01-00-00
      • Weight:
        1.08 kg
      • Tariff Code:
        8537101190
      • Monitor function:
        Reverse rotation and forward/reverse speed
      • Alert relay option:
        01 — Epoxy sealed
      • Agency approval option:
        00 — Not required
      • Barrier option:
        00 — None
      • Transducer family:
        Bently Nevada 3300, 7200 or 3000 proximity systems
      • Reverse alarm enable:
        External contact closure at signal-input module
      • Speed range, 1 event/revolution:
        0.05–20,000 rpm
      • Speed range, 2 events/revolution:
        0.05–10,000 rpm; external transducers only
      • Speed accuracy:
        ±(0.02% of reading + 1 rpm) at +25°C
      • Nominal power consumption:
        2 W
      • Manual trigger threshold:
        0 to -24 Vdc
      • Recorder outputs:
        Separate forward and reverse speed outputs
      • Operating temperature:
        0 to +65°C
      • Application limitation:
        Not for speed control or overspeed protection
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Bently Nevada 3300/52-01-00-00 identifies rotation direction from the sequence of two proximity signals, supporting machines that may reverse during process upsets.
      Direction detection: Two proximity-transducer signals
      Relay configuration: Epoxy-sealed option 01
      Enable input: External contact closure
      Recording: Separate forward and reverse speed outputs
      Forward rotation is established by the target notch reaching transducer A and then transducer B. The mounting arrangement must preserve the required overlap between the probe signals; an axially offset probe arrangement can be used to obtain the prescribed spacing. Incorrect signal order can reverse the interpretation of machine direction.

      With one event per revolution, the indicated speed range is 0.05–20,000 rpm; with two events per revolution it is 0.05–10,000 rpm. The two-event option is valid only for external transducer inputs. At +25°C, speed indication accuracy is ±(0.02% of reading + 1 rpm). Trigger threshold is adjustable from 0 to -24 Vdc, with selectable hysteresis from 0.2 to 2.0 V.

      A contact closure at the signal-input module enables the reverse-rotation and reverse-speed alarms. Separate recorder outputs represent forward and reverse speed, with 4–20 mA, 1–5 Vdc or 0 to -10 Vdc formats. Reverse rotation alarm delay is three shaft revolutions or one second, whichever is longer. This monitor is not intended for speed control or overspeed protection.
      Controller platform reference: Bently Nevada 3300 reverse-rotation monitoring.
      Technical downloads for Bently Nevada 3300/52-01-00-00: an Apter Power technical reference and an installation and commissioning guide.
      Both guides are compiled by Apter Power from applicable manufacturer material for preparation and review. Use the complete manufacturer and machine instructions during installation and commissioning.
      Direction-monitoring context: 3300/52-01-00-00 uses a paired proximity arrangement to identify shaft direction. Match the relay/input hardware, pulse sequence and external enable circuit to the installed 3300 system.

      Machine applications: Pumps, hydraulic turbines and compressors can reverse during process upsets. Evaluate the machine-specific direction and speed requirements separately from overspeed protection.
      Correct probe sequence and enable wiring are essential to the direction indication of 3300/52-01-00-00.
      Confirm the forward sequence

      The target reaches transducer A before B for the intended forward direction.

      Preserve probe geometry

      Check the required signal overlap and mounting arrangement against the original drawing.

      Check event count

      Two events per revolution is valid only with external transducer inputs.

      Prove the enable contact

      Contact closure enables reverse-rotation and reverse-speed alarms.

      Allow direction alarm timing

      The reverse-rotation delay is three revolutions or one second, whichever is longer.

      Provide separate protection

      Do not use this monitor as a speed controller or overspeed-protection device.

      Alternative Names

      3300/52-01-00-00 3300-52-01-00-00 Bently Nevada 3300/52-01-00-00 Bently Nevada 3300-52-01-00-00

      Technical notes

      Direction relationship: The forward direction is defined by the monitored notch reaching transducer A before transducer B. Correct probe spacing and pulse overlap are essential; verify against the applicable machine and manufacturer drawings.

      Application limitation: External contact closure enables reverse-rotation and reverse-speed alarms. The monitor is not a speed-control or overspeed-protection device; recorder outputs are intended for logging or chart recording.

      Technical reference: Bently Nevada 3300/52 Reverse Rotation Monitor, archived Specifications and Ordering Information reference associated with document 141513. The archived reference provides the 01/00/00 ordering options and the direction-detection arrangement.

      FAQ View All FAQ

      • How does 3300/52-01-00-00 identify the forward direction?
        The target notch reaches transducer A before transducer B for forward rotation. Correct spacing and overlap of the two proximity signals are essential; retain the machine-specific probe drawing when replacing components.
      • What is the function of the external enable contact on 3300/52-01-00-00?
        Closing the contact at the signal-input module enables both the reverse-rotation alarm and the reverse-speed alarm. Include this contact and its intended operating state in the commissioning checks.
      • Which relay and barrier options belong to 3300/52-01-00-00?
        The 01 relay option specifies epoxy-sealed relays. The next 00 requests no agency approval, and the final 00 selects no barriers. These options do not establish a hazardous-area installation approval.
      • How does event count affect the speed range of 3300/52-01-00-00?
        One event per revolution supports 0.05–20,000 rpm; two events per revolution supports 0.05–10,000 rpm. The two-event option is valid only with external transducer inputs.
      • What delay applies to the reverse-rotation alarm on 3300/52-01-00-00?
        The reverse-rotation delay is three shaft revolutions or one second, whichever is longer. Verify the machine-direction test at a known speed so both the event count and time condition are considered.
      • Does 3300/52-01-00-00 provide separate forward and reverse recorder signals?
        Yes. It provides one recorder for forward speed and one for reverse speed, each proportional to its configured full-scale range. Select 4–20 mA, 1–5 Vdc or 0 to -10 Vdc to match the receiving inputs.
      • Which measurements can be called up on the display of 3300/52-01-00-00?
        The normal display indicates rpm. Front-panel controls allow transducer gap, speed setpoints, maximum reverse speed and the number of reverse rotations to be displayed, with direction and enabled-state indications.
      • Can 3300/52-01-00-00 replace a speed-control or overspeed-protection system?
        No. The monitor does not provide the protective redundancy and response required for those functions. Use the speed alerts for annunciation and the recorder signals for logging, with a separate suitable protection system where required.
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