The Bently Nevada 149369-01 3500/25 Enhanced Keyphasor Module is a specialized device used in machinery monitoring systems to provide Keyphasor signals. Here’s a breakdown of its features, specifications, and ordering information:
Description:
- The module receives input signals from proximity probes or magnetic pickups and converts them into digital Keyphasor signals.
- Keyphasor signals indicate when a specific mark on a rotating shaft aligns with the Keyphasor transducer.
- The system can accept up to four Keyphasor signals in a normal configuration and up to eight in a paired configuration.
- Keyphasor signals are essential for precise timing measurements, including shaft rotational speed and vector parameters like 1X vibration amplitude and phase.
Enhancements:
- The Enhanced Keyphasor Module improves upon the previous design with expanded signal processing capabilities.
- It maintains backward compatibility with existing Keyphasor modules for legacy systems.
- The older Keyphasor module (PWA 125792-01) is replaced by the newer 149369-01 module.
Configuration:
- In Triple Modular Redundant (TMR) applications, two Keyphasor modules are used to provide primary and secondary Keyphasor signals.
- Paired configurations are possible for systems with more than four Keyphasor inputs, allowing four primary and four backup input channels.
Isolated Keyphasor I/O Module:
- Designed for Keyphasor signals tied in parallel to multiple devices and requiring isolation from other systems.
- Suitable for Magnetic Pickup applications with the addition of an external power supply.
- Note that this module primarily measures shaft speed, and it introduces a slightly higher phase shift compared to the non-isolated version.
Enhanced Product Features:
- Offers the generation of once-per-turn event signals from multi-event-per-turn inputs.
- Supports field-upgradeable firmware.
- Provides asset management data reporting.
Specifications (Selected):
- Power Consumption: 3.2 Watts typical.
- Input Signal Range: +0.8 V to -21.0 V (Non-Isolated I/O modules) or +5V to -11V (Isolated I/O modules).
- Input Impedance: 21.8 kΩ minimum.
- Input Range: 1 to 1,200,000 cpm (0.017 to 20 kHz).
- Output Range: 1 to 99,999 cpm (0.017 to 1667 Hz).
- Output Impedance: 504 Ω maximum buffered output impedance.
- Keyphasor Transducer Power Supply: -24 Vdc, 40 mA maximum per channel.
- Operating Temperature: -30°C to +65°C (-22°F to +150°F).
Environmental Limits:
- Operating Temperature ranges depending on the use of Internal Barrier I/O Module or Keyphasor I/O Module.
Compliance and Certifications:
- Complies with EMC standards and electrical safety standards.
- Certified for hazardous area use.
Physical Dimensions (Main Module):
- Height x Width x Depth: 119.9 mm x 24.4 mm x 256.5 mm.
- Weight: 0.34 kg (0.76 lbs.).
Rack Space Requirement:
- Main Module: 1 half-height front slot.
- I/O Modules: 1 full-height rear slot.
Ordering Considerations:
- Different options are available based on the number of channels, type of I/O module, and agency approval requirements.
- External Termination Blocks and Cables may need to be ordered separately.
- Consult with a qualified Bently Nevada sales representative for complex applications.
To learn more about the Bently Nevada 149369-01 3500/25 Enhanced Keyphasor Module, please read the PDF online: 3500-25-01-01-00
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