Bently Nevada

Bently Nevada 3500/53-02-00 Electronic Overspeed Detection System

SKU 3500/53-02-00

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Bently Nevada

  • Product No.: 3500/53-02-00

  • Country of origin:United States

  • Product Type: Overspeed Detection Modules

  • Payment: T/T, Western Union

  • Weight: 320g

  • Dimensions: 254 mm x 178 mm x 51 mm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

Engineered for highly critical rotating machinery protection, the Bently Nevada 3500/53-02-00 provides highly reliable, continuous overspeed detection within the 3500 Series machinery monitoring architecture. This two-channel hardware-based system is designed to respond rapidly to overspeed and underspeed conditions, ensuring automatic shutdown capability to prevent catastrophic mechanical failure. By processing raw signals directly from dynamic speed sensors, the system performs real-time frequency-to-velocity calculations with extreme precision, independent of the main turbine control system.

The 3500/53-02-00 configuration features a dual-channel module structure without agency approvals, making it an optimal, cost-effective drop-in replacement or system expansion unit for non-hazardous industrial zones. It integrates seamlessly into standard 3500 backplane racks, interfacing directly with the rack's power supplies and internal communications buses.

Features

  • Dual-Channel Protection: Two independent speed channels configured to accept direct transducer signals.
  • Transducer Versatility: Direct compatibility with passive magnetic pickups and active proximity probe sensors.
  • Internal Signal Limiting: Robust protective circuitry limits over-range input voltages to maintain operational integrity.
  • Hardware-Based Speed Analysis: Processes high-frequency speed signals locally to ensure ultra-fast trip response times.
  • System Redundancy Support: Configurable within the 3500 system to support multiple voting configurations for enhanced safety.

Applications

  • Steam, gas, and hydro turbines in power generation utilities.
  • High-speed centrifugal and axial compressors in petrochemical processing.
  • Turboexpanders and large-scale industrial fans.
  • Heavy industrial rotating machinery requiring dedicated mechanical overspeed trip protection.

Ordering Information

Option Code Description
3500/53-02 Two-Channel Overspeed Detection System
3500/53-XX-00 No Agency Approvals Required

Technical Specifications

Parameter Specification Value
Manufacturer Bently Nevada
Part Number 3500/53-02-00
System Type Two-Channel Overspeed Detection
Input Signal Range +10.0 VDC to -24.0 VDC (Internally limited)
Input Impedance 20 kohms
Power Consumption 8.0 watts (Typical)
Operating Temperature -30 degC to +65 degC (-22 degF to +149 degF)
Storage Temperature -40 degC to +85 degC (-40 degF to +185 degF)
Relative Humidity 95% non-condensing
Country of Origin United States (USA)
Shipping Weight (Calculated) 2.0 kg (4.4 lbs)
Package Dimensions (Calculated) 254 mm x 178 mm x 51 mm

Empirical Engineering Insights

Alternative Models & Compatibility

The 3500/53 system requires dedicated overspeed configuration software utilities within the broader Bently Nevada 3500 Rack Configuration package. Note that while this model is a two-channel module (-02), it can be deployed alongside another 3500/53 module to establish a redundant voting system (such as 2-out-of-2 or 2-out-of-3 voting topologies) via the backplane relay modules.

Application Pitfalls & Engineering Notes

A common field issue is signal attenuation at low startup speeds when using magnetic pickups. Passive magnetic pickups require a minimum surface speed to generate the threshold voltage needed for detection. Ensure the sensor-to-target gap is precisely adjusted to provide at least 1.0 V peak-to-peak during the lowest monitoring speeds to prevent false transducer failure alarms or startup trip lockouts.

Commissioning & Wiring Tips

To eliminate electromagnetic interference (EMI) on high-frequency speed input channels, always install three-wire or two-wire shielded cables. Ensure the cable shield is grounded strictly at the 3500 rack ground plane and left floating (insulated) at the sensor end. Grounding both ends will create a ground loop, introducing electrical noise that can manifest as erroneous high-speed spikes and cause nuisance machine trips.

Installation Guidelines

CRITICAL WARNING

Overspeed protection is a critical safety function. Ensure that the machinery is completely stationary and that all associated trip circuit outputs are disabled or bypassed before performing module insertion, removal, or wiring changes. Accidental signal interruption during live operation will initiate an immediate, unmitigated machinery shutdown.

1
Power down the specific section of the rack if required by site safety codes, or verify that the target rack slot is clean, clear of debris, and has no bent backplane pins.
2
Insert the 3500/53-02-00 module firmly into the chassis slot until the connectors engage completely with the backplane. Tighten the card-retaining screws to secure the physical assembly.
3
Connect the external magnetic pickup or proximity probe transducer wiring to the corresponding terminals on the I/O module at the rear of the rack, observing correct polarity and shielding.
4
Connect your engineering workstation to the rack, launch the configuration software, verify card recognition, and download your verified speed scaling, teeth-count, and trip-limit configuration files.

FAQ

What speed sensors can be used with the 3500/53-02-00 overspeed module?

This module is compatible with both passive magnetic pickups and active proximity probe transducers. The input signal range is +10.0 VDC to -24.0 VDC.

What is the function of the 02 option in the part number 3500/53-02-00?

The 02 option specifies a Two-Channel Overspeed Detection System. It allows processing of up to two independent speed sensor signals.

Does the 3500/53-02-00 carry explosive atmosphere certifications?

No. The -00 suffix denotes the No Agency Approval option. It is intended for installation in standard, non-hazardous industrial areas unless housed in a separate, certified protective enclosure.

How is the module shielded against signal noise from nearby high-voltage lines?

To prevent interference, speed sensor cables must be individually shielded twisted pairs. The shield must be grounded solely at the 3500 rack end and left completely isolated at the transducer end.

View all FAQs →

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  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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