Bently 3500-40M 140734-01 Proximitor Monitor Main Board

Description

Hardware & Electrical Specifications

‑ Manufacturer: Bently Nevada (Baker Hughes) ‑ Compatible System: 3500‑05 full‑size / mini TSI rack, works with 3500/22M TDI module, M‑series system firmware requiredBaker Hugh… ‑ Functional Type: M‑Series 4‑Channel Proximitor Displacement / Vibration Monitor ‑ Channel quantity: 4 independent proximity input channels ‑ Supported sensor: 3300XL series eddy‑current proximity transducers ‑ Transducer power:‑24 VDC supplied by module ‑ Sensitivity options: 100 mV/mil (3.94 mV/μm), 200 mV/mil (7.87 mV/μm) programmable ‑ Frequency response: 0.5 Hz ~ 10 kHz (‑3 dB) ‑ Measurement accuracy: Typical ±0.33 %, maximum ±1 % full‑scale ‑ Typical power consumption:7.7 W, powered by rack backplane busBaker Hugh… ‑ Front‑panel: Four BNC buffered probe output connectors; status LED: OK, TX/RX, Channel fault indicators ‑ Matching Parts: Main‑board 140734‑01 must pair with rear I/O board 140748‑01, sold separately ‑ Hot‑swap: Supports hot‑swap; during replacement, corresponding measurement & protection functions are temporarily invalid, other channels keep working normally. ‑ PCB Coating: Conformal coated for G3 harsh industrial cabinet environment ‑ Safety Certification: SIL‑2 functional‑safety capable with complete system set, ATEX / UL approvals available.

Environmental Specifications

‑ Operating Temperature:‑30 °C ~ +65 °C ‑ Storage Temperature:‑40 °C ~ +85 °C ‑ Relative Humidity:5%‑95 % non‑condensing ‑ Vibration & Shock: Complies with API‑670 power‑plant cabinet EMC standards

Mechanical Data

‑ Dimension(W×H×D):25.4 mm ×120.7 mm ×251.5 mm ‑ Weight: approx 0.91 kg

Core Functions

1. Proximity signal conditioning: Supply‑24 VDC power to proximity probes, condition gap voltage signal into engineering‑unit values (μm/mil).
2. Multi‑mode measurement: Channel‑pair configurable for radial shaft vibration, thrust position, differential expansion, eccentricity REBAM.
3. Phase‑related analysis: Receive rack‑wide Keyphasor timing signal, compute 1X amplitude and phase angle, support start‑up / coast‑down waveform capture.
4. Two‑level alarm processing: Alert and Danger setpoints with configurable delay, generate rack system events, trigger relay‑module hardware alarm/trip.
5. Analog output: Each channel optional 4‑20 mA output via rear I/O board for DCS data acquisition.
6. Buffered BNC outputs: Front‑panel BNC copies raw probe signal for portable field diagnostic instrument connection.

Installation, Replacement & Critical Warnings

1. Supports hot‑swap; the four channels of this module lose measurement & protection during pulling‑out; other modules in rack keep running.
2. Compatibility warning: ‑ Cannot directly drop‑in replace old non‑M‑series 3500/40‑125680‑01; rack firmware upgrade is mandatory. ‑ Must match rear‑I/O board 140748‑01; cannot use legacy‑generation rear terminal boards. ‑ TMR triple‑redundant rack needs three identical 140734‑01 modules for three‑way redundant measurement.
3. After replacement, check OK and channel LED status; download rack configuration project, verify gap reading, vibration value, alarm threshold and 4‑20 mA output function.

4. Common failure mode:‑24 VDC transducer power circuit damage, BNC buffer circuit surge damage, component aging; short‑circuit of probe cable may burn front‑end conditioning circuit.