Bently Nevada 133442-01

Description

Channel & Input Specifications

• Independent Input Channels: 2 dedicated tachometer input channels
• Compatible Sensors: Bently Nevada proximity keyphasor probes, magnetic velocity pickups
• Input Signal Type: Pulse frequency signal, AC voltage signal, Keyphasor® phase signal
• Measurable Speed Range: 0 – 99,999 RPM
• Input Frequency Range: 0.0167 Hz – 20 kHz
• Minimum Trigger Signal Amplitude: 500 mV peak-to-peak
• Input Impedance: 20 kΩ
• Measurement Accuracy:
  • Below 100 RPM: ±0.1 RPM
  • 100 – 10,000 RPM: ±1 RPM
  • 10,000 – 99,999 RPM: ±0.01% full scale value
• Signal Isolation: Full galvanic isolation between input channels and system backplane circuits

Alarm & Functional Specifications

• Independent programmable speed ALERT early warning threshold
• Independent programmable overspeed DANGER interlock threshold
• Built-in peak speed holding function for historical data recording
• Supports rotor acceleration calculation and rotation direction detection
• Automatic sensor open-circuit, short-circuit and signal abnormal fault detection
• Equipped with BYPASS maintenance bypass function

Electrical System Specifications

• Power Supply: Powered by 3500 system chassis backplane power supply
• Typical Power Consumption: 5.8 W
• Communication Mode: Internal backplane bus communication with 3500 main system
• Status Indication: Independent OK, ALERT, DANGER, BYPASS LED indicators
• Matching Main Module: 3500/50 Tachometer Monitor Module

Mechanical & Physical Specifications

• Module Dimensions: 241.3 mm × 24.4 mm × 99.1 mm
• Net Weight: 0.544 kg
• Housing Material: Industrial metal shielding shell, anti-interference and anti-corrosion
• Termination Structure: Internal terminal connection (133442-01 exclusive configuration, incompatible with external termination blocks)
• Installation Mode: Standard plug-in slot mounting for 3500 system chassis
• Maintenance Feature: Hot-swappable field replaceable design

Environmental Specifications

• Operating Temperature: -30 °C to +65 °C
• Storage Temperature: -40 °C to +85 °C
• Relative Humidity: 5%–95% non-condensing
• Anti-interference Performance: Fully complies with industrial EMC electromagnetic compatibility standards
• Protection Performance: Dust-proof, moisture-proof and vibration-resistant for harsh industrial sites

Certifications & Compliance

• API 670 Machinery Protection Standard Compliance
• CE Industrial Safety Certification
• CSA Certification
• Support TMR Triple Modular Redundant System Operation

Core Functional Features

1. Dedicated 2-Channel Tachometer Signal Interface

   Two independent high-speed frequency input channels, specially used for keyphasor speed and phase signal acquisition, matching 3500/50 tachometer mainboard perfectly.
2. Internal Terminal Wiring Exclusive Design

   Adopts built-in internal terminal structure instead of external terminal board, more compact installation, higher anti-interference performance and better dust-proof effect.
3. Ultra-Wide High-Precision Speed Measurement

   Covers full range 0–99,999 RPM, realizes high-precision speed measurement under low-speed, medium-speed and high-speed working conditions, accurately captures speed fluctuation and acceleration changes.
4. Complete Keyphasor® Phase Signal Processing

   Integrates professional signal shaping and filtering circuits, outputs standard Keyphasor phase signal to system backplane, provides phase reference for vibration analysis and rotor dynamic diagnosis.
5. Hierarchical Independent Alarm Protection Logic

   Separate ALERT early warning and DANGER overspeed shutdown settings for speed parameters, realizes graded overspeed protection and equipment interlock logic.
6. Complete Online Fault Diagnosis Mechanism

   Automatically identifies sensor disconnection, short circuit, wiring fault and module abnormal status, outputs visual fault indication and system alarm information.
7. Full TMR Redundant System Compatibility

   Supports triple modular redundant voting configuration, greatly improves operation reliability for key machinery speed protection occasions.
8. Hot-Swappable Easy Maintenance Design

   Online pluggable module structure, completes fault replacement without system shutdown, greatly improves on-site maintenance efficiency.
9. Full API 670 Standard Compliance

   Meets international rotating machinery protection specifications, suitable for formal project acceptance and OEM factory matching applications.

Main Application Scenarios

• Power plant steam turbines, gas turbines and generator units
• Petrochemical centrifugal compressors and process gas compressors
• Large industrial oil pumps, water pumps and high-speed centrifugal pumps
• High-speed industrial fans, blowers and induced draft fans
• High-voltage large induction motors and motor shaft speed monitoring systems
• Offshore oil & gas platform rotating production equipment
• Chemical processing large rotating machinery speed monitoring
• Machinery predictive maintenance and rotor dynamic analysis systems
• All industrial occasions requiring API 670 standard shaft speed and overspeed protection

Part Number Definition

• 133442-01: Official dedicated part number for 3500/50 Tachometer I/O Interface Module with Internal Terminations
• Exclusive matching: 3500/50 tachometer monitor main module
• Internal terminal wiring configuration (distinguished from external terminal version)