126648-01 Keyphasor I/O Module

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	126648-01
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 126648-01 Keyphasor I/O Module is a half-height, two-channel module designed for the Bently Nevada 3500 rack, providing precise Keyphasor signals from proximity probes or magnetic pickups. 126648-01 converts analog transducer inputs into digital once-per-turn signals, supporting up to two inputs per module and delivering buffered outputs via front coaxial and rear Euro Style connectors with 504 Ω maximum impedance. The module operates on a -24 VDC supply at 40 mA per channel, consuming 3.2 Watts typical. 126648-01 supports speeds from 1 to 1,200,000 cpm (0.017–20 kHz) and outputs 1 to 99,999 cpm (0.017–1667 Hz) with ±1 cpm or ±1% accuracy. It functions in harsh environments from -30°C to +65°C and humidity up to 95%. Front panel LEDs indicate operational status (OK) and communication (TX/RX) with the Rack Interface Module (RIM). For TMR and multi-module configurations, 126648-01 provides parallel primary and secondary Keyphasor signals, enabling accurate shaft speed measurement and event generation. Field-upgradeable firmware and asset data reporting enhance system automation and monitoring. Rack space usage is one half-height front slot for the main module and one full-height rear slot for I/O.

Applications

Monitor Shaft Speed in Rotating Machinery
126648-01 accepts two transducer signals and delivers digital Keyphasor outputs with ±1 cpm accuracy, enabling precise shaft speed monitoring for gas turbines, compressors, and pumps.

Generate Once-Per-Turn Event Signals
Using input from proximity probes, 126648-01 generates synchronized event signals for machinery diagnostics, vibration analysis, and process control, supporting speeds up to 1,200,000 cpm.

Support TMR Configurations in Critical Systems
126648-01 provides parallel primary and secondary Keyphasor outputs for Triple Modular Redundant setups, ensuring continuous signal delivery and automated machine monitoring.

Integrate with Automation and Asset Management
Buffered Keyphasor outputs at 504 Ω impedance allow 126648-01 to interface with 3500 rack modules and data acquisition systems, supporting field-upgradable firmware and asset monitoring.

Specifications

Competitive Advantage

High-Speed Signal Processing
126648-01 handles input frequencies up to 20 kHz and outputs up to 1,667 Hz with ±1% accuracy, enabling high-speed machinery monitoring without data loss.

Low Power Consumption
With only 3.2 Watts typical, 126648-01 minimizes rack power requirements while supporting two channels of Keyphasor input.

Flexible Installation and Rack Space Optimization
One half-height front slot and one full-height rear slot for I/O module use allows efficient integration into existing 3500 racks.

Robust Environmental Operation
126648-01 operates from -30°C to +65°C and 95% non-condensing humidity, making it suitable for industrial automation environments.