Description
Hardware & Electrical Specifications
‑ Manufacturer: Bently Nevada (Baker Hughes) ‑ Compatible System: 3500‑05 full‑size / mini rack, mandatory pairing with 3500/22M TDI module ‑ Functional Type: New‑Version M‑Series EGD Ethernet Global Data Communication Gateway Module ‑ Communication Interfaces: ‑ Ethernet:10/100 BASE‑TX copper or 100BASE‑FX fiber (determined by matched rear I/O card) ‑ Serial: RS232 / RS422 / RS485 on rear‑I/O ‑ Supported Protocols: EGD v2.01, Bently proprietary protocol, Modbus‑TCP, Modbus‑RTU serial ‑ Max quantity per rack: 1 piece only ‑ Typical data update rate:10 ms typical for EGD exchange ‑ Typical power consumption:7.4 W, powered by rack backplane bus ‑ Front‑panel Indicators: OK LED, TX/RX LED ‑ Matching Parts: Main‑board 190782‑01 must pair with rear I/O:190798‑01(copper) or 190806‑01(fiber), sold separately ‑ Hot‑swap: Supports hot‑swap; data communication interrupted during replacement; all machinery‑protection monitor modules keep normal protection operation. ‑ PCB Coating: Conformal coated for harsh industrial cabinet environment ‑ Safety Certification: CE, CSA hazardous‑area approvals available
Environmental Specifications
‑ Operating Temperature:‑30 ℃ ~ +65 ℃ ‑ Storage Temperature:‑40 ℃ ~ +85 ℃ ‑ Relative Humidity:5%‑95 % non‑condensing ‑ Vibration & Shock: Complies with API‑670 machinery‑protection cabinet standards
Mechanical Data
‑ Dimension(W×H×D):241.3 mm ×24.4 mm ×241.8 mm ‑ Weight: approx 0.80 kg
Core Functions
- Upgraded EGD high‑speed gateway: Real‑time bidirectional high‑capacity data exchange with GE Mark VIe turbine control system, higher EGD data refresh rate than old‑revision 3500/91.
- Multi‑protocol data output: Upload vibration, position, speed, temperature, alarm events, rack fault status to DCS, historian, System‑1 diagnostic software via Modbus‑TCP / Modbus‑RTU.
- Remote rack configuration: Support 3500 Rack Configuration Software online connect, download/upload rack project parameters through Ethernet port.
- Protection‑safety isolation: Gateway hardware failure does not impact hardware trip logic of all protection monitor modules in rack; machinery‑protection function remains intact.
- Enhanced self‑diagnosis: Detect backplane communication fault, Ethernet link fault, serial‑port fault; report module hardware fault and detailed network diagnostic information to rack‑system log.
Installation, Replacement & Critical Warnings
- Supports hot‑swap; data communication service is interrupted during plug‑pull, but machinery‑protection trip function is unaffected.
- Compatibility warning: ‑ Two rear‑I/O variants: copper 190798‑01 or fiber‑optic 190806‑01; select according to field network layout. ‑ New‑revision 190782‑01 (3500/91M) cannot swap main‑board or rear‑I/O with old‑3500/91 161204‑01. ‑ Only one 3500/91M can be installed in single rack slot; must cooperate with 3500/22M TDI module. ‑ Verify rack firmware and configuration‑software version compatibility before replacement.
- After replacement, check OK LED status; download rack configuration project, verify Ethernet link, EGD/Modbus data read‑out, remote configuration function.
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Common failure mode: Network interface circuit damage, component aging; Ethernet / serial cable fault will cause communication loss, will not trigger machinery protection trip.




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