Product Overview
The Bently Nevada 3500/25 128718-01 Keyphasor® External Terminal Module (ETM) is an essential component von the 3500 Machinery Protection System, providing reliable, precise shaft rotational speed and phase reference signals. These signals are critical for performing vibration phase analysis, synchronous machine startup and shutdown diagnostics, and rotor position monitoring.
The 3500/25 Keyphasor® Module converts proximity probe signals from rotating shafts into accurate Keyphasor® pulses, which the system uses for speed measurement, phase referencing, and advanced vibration diagnostics. The 128718-01 ETM version is designed for external terminal connections, simplifying wiring and improving accessibility during installation or maintenance.
The module supports configurations for one or two independent Keyphasor® channels, making it suitable for single-shaft or dual-shaft machinery applications.
Key Features
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Keyphasor® Signal Generation: Converts proximity probe signals to precise pulse outputs for speed and phase reference
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Two Independent Channels: Supports dual Keyphasor® inputs for redundant or multi-shaft applications
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External Terminal Module (ETM): Provides convenient external wiring terminals for easier installation and service
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Critical for Vibration Analysis: Enables phase-triggered measurements and synchronous vibration diagnostics
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System Integration: Seamlessly integrates with the Bently Nevada 3500 Machinery Protection System
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Robust Industrial Design: Built for operation in harsh environments, ensuring reliable long-term performance
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LED Indicators: Provides visual status feedback for channel health and system functionality
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Redundant Channel Capability: Enhances reliability by supporting independent redundant Keyphasor® signals
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Hot-Swappable Module: Allows module replacement without disrupting overall system operation
Technical Specifications
| Parameter | Beschreibung |
|---|---|
| Product Name | Keyphasor® External Terminal Module (ETM) |
| Modell Number | 3500/25 128718-01 |
| System Compatibility | Bently Nevada 3500 Machinery Protection System |
| Number von Channels | Supports up to 2 independent Keyphasor® inputs |
| Signal Source | Proximity probes detecting shaft or keyway targets |
| Output Signals | TTL-compatible pulse outputs for speed and phase reference |
| External Terminal Connection | Yes, via 128718-01 ETM for simplified field wiring |
| LED Indicators | Channel health, activity status |
| Hot-Swappable | Yes, replaceable during live system operation |
| Operating Temperature Range | -30°C to +65°C |
| Storage Temperature Range | -40°C to +85°C |
| Humidity Tolerance | 95% non-condensing |
| Power Requirements | Supplied through the 3500 rack backplane |
| Dimensions | 241.3 x 24.4 x 103.1 mm |
| Gewicht | 0.46 kg |
| Certifications | CE, UL, CSA, ATEX, IECEx (installation dependent) |
Product Advantages
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Precise Shaft Speed and Phase Reference: Delivers accurate Keyphasor® pulses essential for machine diagnostics
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Supports Redundant Configurations: Dual channels allow for backup signals or monitoring von dual-rotor machinery
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Simplified Wiring with ETM: External terminal connections reduce installation time and improve accessibility
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Enhances Vibration Analysis: Enables phase-referenced data for advanced machinery condition monitoring
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Reliability in Harsh Zustands: Built to withstand industrial environments including oil & gas, power generation, and refining
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System Uptime Assurance: Hot-swappable design avoids downtime during module maintenance or replacement
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Full 3500 System Integration: Works seamlessly with Bently Nevada’s industry-standard protection and monitoring solutions
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Real-Time System Feedback: LED indicators provide immediate operational status for quick troubleshooting
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Proven Global Performance: Used worldwide in critical rotating machinery protection applications
Industry Applications
The Bently Nevada 3500/25 128718-01 Keyphasor® ETM is essential in industries where rotating equipment monitoring and protection are critical:
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Oil & Gas: Turbines, compressors, and pumps in upstream and downstream operations
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Power Generation: Gas turbines, steam turbines, and generator condition monitoring
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Petrochemical and Refining: Continuous monitoring von process-critical rotating assets
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Metals & Mining: Crushers, mills, and other heavy machinery requiring phase-based diagnostics
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Marine and Offshore: Shaft monitoring for propulsion and auxiliary machinery
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Pulp and Paper: Speed and phase reference for rollers, drives, and high-speed equipment
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Water and Wastewater: Monitoring von pumps, blowers, and other rotating infrastructure
Häufig gestellte Fragen (FAQ)
Q1: What is the function von the 3500/25 Keyphasor® Module?
It generates accurate shaft speed and phase reference signals based on proximity probe inputs, critical for vibration and machine protection diagnostics.
Q2: What makes the 128718-01 version unique?
It includes an External Terminal Module (ETM) that simplifies field wiring and provides easy access for maintenance.
Q3: Can the module support two separate Keyphasor® signals?
Yes, it has two independent channels for redundant or multi-shaft applications.
Q4: How is the module powered?
Power is supplied directly through the backplane von the 3500 rack, requiring no external power source.
Q5: Is the module hot-swappable?
Yes, it can be replaced without shutting down the entire system, minimizing downtime.
Q6: Does it integrate with System 1® svontware?
Yes, Keyphasor® signals are used by System 1® for advanced diagnostics and condition monitoring.
Q7: What kind von sensors does it accept?
It accepts inputs from proximity probes mounted to detect shaft rotation or keyway targets.
Q8: Is the module suitable for hazardous areas?
Yes, with proper system configuration, it complies with ATEX, IECEx, and other hazardous area certifications.
Q9: What is the typical application for the two-channel version?
It is ideal for redundant protection or monitoring equipment with dual rotors or shafts.
Q10: Can I monitor slow-speed machines with this module?
Yes, it supports a wide speed range, including low-speed applications, depending on sensor configuration.
Recommended Related Modells
| Modell Number | Beschreibung |
|---|---|
| 3500/25 149369-01 | Keyphasor® Module with Internal Terminal connections |
| 3500/25 163179-01 | Enhanced Keyphasor® Module for advanced applications |
| 3500/22M 164466-01 | Ethernet Transient Data Interface for 3500 system |
| 3500/15-05-05-00 | Power Supply Module for 3500 Racks |
| 3500/42M-01-00 | Proximitor/Seismic Monitor for vibration analysis |
| 3500/93-01-00-02 | System Display Interface for 3500 Monitoring Rack |
Popular Bently Nevada Machinery Protection Produkte
| Modell Number | Beschreibung |
|---|---|
| 330101-00-20-05-02-05 | 3300 XL 8mm Proximity Probe for precise displacement monitoring |
| 330130-040-00-05 | 3300 XL Extension Cable for proximity probe systems |
| 3500/05 | 19-inch Rack Frame for the 3500 Series System |
| ADAPT 3701/55 | Adaptive Machine Protection and Zustand Monitoring |
| 3500/42M | Advanced Vibration Monitoring Module |
| 3500/25 | Keyphasor® Module for rotational speed and phase monitoring |
Unternehmensinformationen
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