The Bently Nevada 126648-01 is a half-height, two-channel Keyphasor I/O module designed for the 3500 rack. It converts raw analog signals from proximity probes or magnetic pickups into precise digital Keyphasor signals. It conditions these inputs to provide highly accurate phase reference, speed logging, and vector synchronization telemetry across the machinery protection backplane. Enclosed in a rugged, shielded industrial chassis, it provides robust terminal connections that ensure plant control systems can accurately track rapid rotational shifts and prevent unexpected mechanical component failures under severe operating conditions.

Input Signal Range: Ranging safely from +5V DC up to -24V DC.

Power Backplane Supply: Operating current and voltage from the centralized 3500 rack backplane connection (+5 Vdc and +24 Vdc loops).

Power Consumption Limits: Typically drawing less than 3.0 Watts of continuous operational energy.

Input Impedance Parameters: Formed with high-input impedance, typically greater than 100 kΩ.

Operating Ambient Temperatures: From -30 °C to +65 °C (-22 °F to +150 °F).

Storage Temperature Boundaries: -40 °C to +85 °C (-40 °F to +185 °F).

Relative Humidity Windows: Designed for environments handling 5% to 95% relative humidity, non-condensing.

Once-Per-Turn Phase Referencing:

Rotational Machine Speed Logging:

Synchronous Data Acquisition Tracking:

Relaying once-per-turn shaft timing pulses from field proximity probes to the 3500 system to establish a steady vector baseline.

Capturing rapid pulse waveforms from magnetic pickups to provide precise rotational speed tracking on high-speed industrial turbines.

Supplying the vital timing triggers needed by plant software networks to capture synchronized vibration waveforms during machine startups.