Product Details
The Bently Nevada 126398-01G is a specialized part number configuration associated with the 3500/25 Enhanced Keyphasor Module. This half-height, two-channel module processes input signals from proximity probes and magnetic pickups to generate precise once-per-revolution or multi-event timing pulses for machinery protection systems. It delivers crucial phase reference and rotational speed data to other monitor modules across the rack backplane, supporting advanced vibration analysis and predictive maintenance routines.
Signal Processing and Triggering Control
The module accepts up to two transducer inputs, accommodating signal ranges from +0.8 V to -21.0 V for standard configurations. It features flexible triggering mechanisms, including auto-threshold detection and manual threshold settings spanning 0 to -20 VDC, backed by adjustable hysteresis for enhanced noise immunity.
Configurable signal conditioning filters span a frequency range from 1 to 1,200,000 cpm, ensuring dependable pulse generation across diverse operating speeds.
Outputs and System Integration
Buffered Keyphasor outputs are accessible via front-panel coaxial connectors and rear Euro-style terminals, maintaining a 504 $\Omega$ maximum output impedance for safe signal distribution. The unit also supplies dedicated -24 VDC power to energize connected transducers.
Front-panel OK and TX/RX LED indicators provide immediate visual feedback regarding internal module health and rack communication status.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 126398-01G (3500/25 Keyphasor Module) |
| Brand | Bently Nevada |
| Series | 3500 Machinery Protection System |
| Product Type | Enhanced Keyphasor Module |
| Number of Channels | 2 channels |
| Input Signal Range | +0.8 V to -21.0 V (Non-Isolated) |
| Frequency Range | 1 to 1,200,000 cpm (0.017 to 20 kHz) |
| Transducer Power Supply | -24 Vdc, 40 mA maximum per channel |
| Weight | 0.64 lbs |
Frequently Asked Questions
Q: What primary sensors interface with the 126398-01G Keyphasor module?
A: The module accepts input signals from proximity probe transducers or passive magnetic pickups to monitor shaft rotational speed and phase angle.
Q: How are buffered Keyphasor signals accessed for external diagnostic tools?
A: Buffered outputs are available directly on the front panel via coaxial connectors as well as at the rear rack interface through Euro-style connectors.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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