Bently 3500-77M 176449-07 Recip Cylinder Pressure Monitor Main Board

Description

Hardware & Electrical Specifications

‑ Manufacturer: Bently Nevada (Baker Hughes) ‑ Compatible System: 3500‑05 full‑size / mini TSI rack, cooperates with 3500/22M TDI module ‑ Functional Type:4‑Channel Reciprocating‑Compressor Cylinder‑Pressure Performance‑Monitor Module ‑ Channel quantity:4 independent pressure‑transducer input channels ‑ Supported transducers: Bently‑approved positive‑voltage output cylinder pressure transducers ‑ Transducer scale‑factor range:3800‑95000 mV/psi ‑ Input impedance: >1 MΩ ‑ Max pressure range:0‑3500 PSI ‑ Measurement accuracy: ±0.1 % full‑scale typical ‑ Typical power consumption:8.0 W, powered by rack backplane bus ‑ Front‑panel Indicators: OK LED, TX/RX LED, Bypass LED; four BNC buffered raw‑pressure‑signal outputs for field debugging ‑ Matching Parts: Main‑board 176449‑07 must pair with rear I/O:143729‑01(Internal Termination) or 143737‑01(External Termination), sold separately ‑ Hot‑swap: Supports hot‑swap; during replacement, four‑channel cylinder‑pressure measurement is temporarily invalid; other rack modules keep running normally. ‑ PCB Coating: Conformal coated for G3 harsh industrial cabinet environment ‑ Safety Certification: SIL‑2 capable within complete certified 3500 TMR system set; ATEX, CE hazardous‑area approvals available

Environmental Specifications

‑ Operating Temperature:0 ℃ ~ +65 ℃ ‑ Storage Temperature:‑40 ℃ ~ +85 ℃ ‑ Relative Humidity:5%‑95 % non‑condensing ‑ Vibration & Shock: Complies with API‑670 power‑plant cabinet EMC standards

Mechanical Data

‑ Dimension(W×H×D):241.3 mm ×24.4 mm ×241.8 mm ‑ Weight: approx 0.86 kg

Core Functions

1. Cylinder‑pressure signal conditioning: Process voltage‑output pressure‑transducer signals for reciprocating‑compressor in‑cylinder pressure‑cycle acquisition.
2. Thermodynamic‑parameter calculation: Suction / discharge pressure, peak / minimum pressure, compression ratio, rod tension‑compression load, rod‑reversal angle calculation, judge valve failure, piston‑ring leakage and abnormal rod‑load conditionsBaker Hugh….
3. Flexible alarm configuration: Alert and Danger setpoints with configurable delay; generate rack‑system events, trigger relay‑module alarm output.
4. TMR redundant support: Can form triple‑modular‑redundant system with three identical modules installed in adjacent slots for high‑safety reciprocating‑compressor protection application.
5. Self‑diagnosis: Detect pressure‑transducer cable open‑circuit / short‑circuit fault; report module hardware fault to rack‑system log.

Installation, Replacement & Critical Warnings

1. Supports hot‑swap; four‑channel cylinder‑pressure measurement loses effectiveness during pulling‑out; other rack modules keep running.
2. Compatibility warning: ‑ Two rear‑I/O options: internal‑termination (wiring direct to rear‑card) or external‑termination (match external terminal‑block assembly). Select I/O type according to site‑wiring scheme. ‑ Cannot swap main‑board or rear‑I/O between 3500/77M and 3500/70M reciprocating‑vibration monitor module. ‑ For TMR triple‑redundant configuration, three identical 176449‑07 modules must be installed in adjacent slots of rack. ‑ Firmware requirement: module firmware revision L or higher is required for normal operation.
3. After replacement, check OK / Bypass LED status; download rack‑configuration project, complete pressure‑signal simulation test, verify channel reading and alarm‑trigger function.

4. Common failure mode: Front‑end high‑impedance signal‑conditioning‑circuit damage, BNC‑connector wear, component aging; pressure‑transducer‑cable short‑circuit / open‑circuit may affect channel measurement.