Bently Nevada 140471-01

Ordering Information

Part Number: 140471-01

Series: 3500/3700 Proximitor® I/O Family

Replaces: 140471-00 (legacy version)

Spare Kit: Ribbon-cable harness (106765-13); front-panel overlay (3500/65-FP-OVR)

Technical Parameters

Inputs:

2 × proximity-probe (eddy-current) speed channels (0–50 V p-p) for Bently Nevada 140471-01

2 × TTL/CMOS keyphasor or encoder-index channels

Speed Range: 0.1 Hz to 20 kHz

Timing Resolution: 1 µs timestamp for each keyphasor event

Setpoints: User-programmable overspeed thresholds via rack CPU

Trip Outputs: Digital hardwired form C relay via system interface module

Isolation: ≥ 1 kV channel-to-chassis

Power Consumption: 24 V DC via backplane, ≤ 3 W in Bently Nevada 140471-01

Environmental: 0 °C – 70 °C operating; –40 °C – 85 °C storage; ≤ 95 % RH non-condensing

Product function

Speed Measurement: Conditions and digitizes eddy-current probe signals via Bently Nevada 140471-01 to compute real-time shaft RPM.

Keyphasor Timing: Detects once-per-rev markers or encoder-index pulses with microsecond precision.

Overspeed Trip Logic: Interfaces with system logic to initiate immediate shutdown on threshold breach.

Data Streaming: Broadcasts speed and event timestamps over the 3500 digital bus using Bently Nevada 140471-01.

Application Areas

Steam & Gas Turbines: Primary overspeed protection with Bently Nevada 140471-01 for synch-check relays.

Compressors & Pumps: Shaft-speed monitoring for surge-control and performance optimization.

Generators & Motors: RPM feedback for excitation and control loops.

Test Cells & Rigs: High-precision timing for sequence-of-events analysis.

Process-Automation Platforms: Integrating speed and phase data into DCS/SCADA systems using Bently Nevada 140471-01.