Bently Nevada 3500/05-02-04-00-00-00 System Rack — Chassis for 3500 Machinery Protection Modules

You might notice the request said “communication gateway module,” but this exact code (3500/05-02-04-00-00-00) is a 3500 System Rack, not a gateway. The rack is the backbone that holds and powers the monitoring, relay, and interface cards. If you’re after the comms gateway itself, the models typically used are 3500/90 (Modbus RTU/TCP) or 3500/91 (EGD). I’m detailing the rack here so you have the correct, workable information.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week for in‑stock items; no more than 1 month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Purpose-built chassis for 3500 series – Houses power supplies, TDI, monitors, relays, and communication modules in a structured backplane.
• Modular and scalable – Supports common configurations for 7‑slot or 14‑slot racks; the -02 option set here is consistent with a standard factory configuration.
• Redundant power capable – Accepts 3500/15 AC or DC power supplies, including redundant pairs for high availability.
• Centralized data interface – Works with 3500/22 TDI for plant network connectivity and historian links.
• Flexible communications – Add 3500/90 or 3500/91 communication gateways for Modbus RTU/TCP or EGD to DCS/PLC systems.
• Industrial-grade build – Rugged rack mechanics, reliable card guides, and grounded backplane help in high‑vibration panels.
• Service friendly – Front-access module insertion/removal and clear slot indexing reduce downtime during swaps.

Technical Specifications

Brand / Model	Bently Nevada 3500/05-02-04-00-00-00 (System Rack)
HS Code	9032.90 (typically declared as parts of automatic regulating/control instruments)
Power Requirements	Via 3500/15 power supply module: AC 85–264 VAC, 47–63 Hz or DC ~18–36 VDC (redundant supply supported)
Dimensions & Weight	Form factors for 7‑slot and 14‑slot; 19‑inch EIA width options, height typically 3U (7‑slot) or 6U (14‑slot); depth and weight depend on module population
Operating Temperature	-30 °C to +65 °C (typical for 3500 system hardware)
Signal I/O Types	Module-dependent: vibration/position inputs, Keyphasor, buffered BNC outputs, relay contacts, 4–20 mA outputs (per installed monitor/relay cards)
Communication Interfaces	Via 3500/22 TDI Ethernet; optional 3500/90 (Modbus RTU/TCP) or 3500/91 (EGD) gateway modules
Installation Method	19‑inch rack‑mount or panel‑mount configurations; front‑insert modules, rear I/O terminations

Application Fields

The 3500/05 rack underpins critical machinery protection in refineries, petrochemical plants, power generation (steam, gas, hydro), steel/cement lines, pulp & paper, and pipeline compressor stations. From my experience, it’s most often chosen where API‑670 style monitoring and trip logic are required and where DCS integration via Modbus or EGD is a must.

• Large compressors, turbines, and motors (vibration and axial position monitoring)
• Pumps and blowers with shutdown relays tied to permissives
• Units needing historian connectivity and condition data to PI or similar

Advantages & Value

• Proven reliability – The 3500 platform is widely used; spares and field know‑how are easy to source in most regions.
• Compatibility – Seamlessly pairs with 3500/22 TDI and 3500/90/91 gateways for plant integration without custom hardware.
• Lifecycle savings – Modular swaps reduce MTTR; you can expand channels without replacing the entire system.
• Risk reduction – Redundant power supply support and robust backplane improve availability during upset conditions.

A maintenance lead at a Gulf Coast refinery told us their move to a redundant 3500/05 rack “cut nuisance trips to near zero” after they cleaned up grounding and moved to dual supplies—seems to be a common outcome when the rack is installed to spec.

Installation & Maintenance

• Panel/cabinet – Use a clean, ventilated enclosure; follow EIA‑310 standards for rack mount. Keep ambient within spec and allow cable bend radius at the rear.
• Power & grounding – Use a 3500/15 AC or DC supply; for critical trains, add a redundant second 3500/15. Bond the rack to a low‑impedance ground to minimize noise.
• Wiring – Separate sensor and power cabling; shield and ground per Bently Nevada wiring practices. Maintain correct proximity probe extension cable lengths.
• Safety – De‑energize before inserting/removing modules. Verify relay logic and trip setpoints after any module change.
• Routine upkeep – Periodic terminal torque checks, dust removal with dry air, firmware updates for TDI/gateways during planned outages, and verification of channel calibration.

Quality & Certifications

• Typically CE and UL/cUL compliant for industrial control equipment
• RoHS conformity in many shipments; documentation available on request
• Many 3500 system builds are suitable for Class I, Div 2 / ATEX Zone 2 when installed per guidelines (module-dependent)
• Manufacturer’s standard warranty applies; we provide a 365‑day warranty on this shipment

Need the Communication Gateway Instead?

If your scope is the gateway, consider:

• 3500/90 Communication Gateway – Modbus RTU and Modbus/TCP for DCS/PLC integration.
• 3500/91 EGD Gateway – Ethernet Global Data for GE control systems.

We can match the exact option codes to your installed rack and TDI firmware. A quick photo of the nameplates or a module list usually speeds things up.