Excellent PLC
| Company Information | ||||||||
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| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The Bently Nevada 3500/25 149369-01+135473-01 Enhanced Keyphasor Module is a high-precision signal conditioning module designed to provide accurate, real-time rotational speed and phase reference measurements for critical rotating machinery. As a key component of the Bently Nevada 3500 Machinery Protection System, this module processes signals from proximity probes to generate a digital pulse train proportional to shaft rotational speed. The “Enhanced” version offers improved noise immunity, higher signal integrity, and faster response compared to earlier models, making it particularly suited for high-speed and high-accuracy industrial applications.
It supports one or two independent Keyphasor signals per module, allowing redundancy or multi-probe configurations. With its advanced filtering and signal shaping capabilities, it ensures precise timing data essential for vibration analysis, phase reference, and diagnostics in turbomachinery, compressors, generators, and other high-value assets.
Product Specifications
| Parameter | Description |
|---|---|
| Module Type | Enhanced Keyphasor Module |
| Part Number | 149369-01+135473-01 |
| System Compatibility | Bently Nevada 3500 Series Machinery Protection System |
| Number of Channels | 2 independent channels |
| Input Signal Type | Proximity probe or magnetic pickup |
| Input Range | ±24 V maximum |
| Signal Output | Digital TTL-compatible pulse train |
| Frequency Range | 1 to 20,000 RPM (configurable) |
| Accuracy | ±0.01% of measured speed |
| Phase Resolution | 0.1° typical |
| Filtering | Programmable digital filtering and noise suppression |
| Redundancy Support | Yes, dual-channel mode for reliability |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Power Consumption | < 6 W |
| Dimensions (H × W × D) | 119.9 x 24.4 x 256.5 mm |
| Weight | 0.34 kg |
| Mounting | 3500 Rack Slot |
| Certifications | CE, CSA, ATEX (Zone 2), IECEx |
Applications
The 3500/25 Enhanced Keyphasor Module is engineered for applications where accurate phase and speed measurements are critical to the protection and performance optimization of rotating assets.
Key use cases include:
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Turbomachinery Monitoring – Steam turbines, gas turbines, and hydro turbines for phase-based vibration diagnostics.
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Compressor Systems – Accurate speed and phase input for condition monitoring.
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Generator & Motor Systems – Synchronization and phase reference for balance and alignment checks.
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Gearbox Diagnostics – Detecting phase shifts and speed variations between input/output shafts.
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Research and Test Stands – High-precision measurement for development and validation.
Advantages
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Enhanced Signal Integrity – Advanced filtering reduces noise interference in high-EMI environments.
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Dual-Channel Flexibility – Enables redundancy or independent multi-probe monitoring for increased reliability.
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High-Speed Capability – Suitable for machinery running up to 20,000 RPM.
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Seamless Integration – Fully compatible with all 3500 Series racks without special adapters.
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Improved Diagnostic Accuracy – Delivers precise phase reference data for advanced vibration analysis and balancing.
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Rugged Design – Built for continuous operation in demanding industrial environments, with wide temperature tolerance and industrial certifications.
FAQ
1. How many Keyphasor signals can this module support simultaneously?
The Bently Nevada 3500/25 module can support up to two independent Keyphasor signals per channel, allowing flexible configuration for redundant or multi-speed shaft monitoring.
2. What type of input signals does the module accept?
It accepts TTL, magnetic pickup, and proximity probe signals, ensuring compatibility with various speed sensing devices.
3. How is the Keyphasor signal processed for vibration analysis?
The module converts raw pulse inputs into conditioned digital signals used by the monitoring system to calculate phase, speed, and synchronous vibration parameters.
4. Does the module support dual-redundant operation?
Yes, it can operate in dual-redundant mode where two sensors provide independent signals for improved reliability and fault detection.
5. What is the typical input frequency range supported?
It supports an input frequency range from 0.016 Hz to 20 kHz, suitable for slow and high-speed rotating machinery.
6. How does the module ensure signal integrity in high-noise environments?
It uses advanced filtering, shielding, and isolation to minimize electrical noise and ensure accurate signal capture.
7. Can the module detect reverse shaft rotation?
Yes, it can detect and report reverse rotation conditions based on Keyphasor pulse sequence and timing.
8. Is the module compatible with all 3500 racks and configurations?
It is fully compatible with standard 3500 racks but requires proper slot placement and firmware compatibility checks before installation.
9. What type of diagnostics are available for troubleshooting?
The module provides self-diagnostic functions, alarm status indications, and error logging for faster troubleshooting.
10. Can this module be configured remotely?
Yes, using the 3500 Configuration Software, engineers can configure and calibrate the module remotely without physically accessing the rack.
Related Models in the Same Series
| Model | Description |
|---|---|
| 3500/25 149369-01+125800-01 | Enhanced Keyphasor Module with alternative connector configuration |
| 3500/25 149369-01+125800-02 | Enhanced Keyphasor Module, extended temperature range |
| 3500/25 149369-01+126648-01 | Enhanced Keyphasor Module with additional EMI shielding |
| 3500/22M 149986-02 | Transient Data Interface Module for high-speed data capture |
| 3500/15 127610-01 | Power Supply Module for the 3500 system |
| 3500/42M 176449-02 | Proximitor/Seismic Monitoring Module |
Popular Models from the Same Brand
| Model | Description |
|---|---|
| 3300 XL 8 mm Proximity Probe | High-precision proximity probe for shaft vibration measurement |
| 3500/42M 176449-02 | Proximitor/Seismic Monitoring Module |
| 3500/22M 149986-02 | Transient Data Interface Module |
| 3500/50 133388-02 | Tachometer Module |
| 3500/32M 149986-02 | Relay Module for alarm and trip control |
| 3500/15 127610-01 | Universal Power Supply Module |
