Bently Nevada 3500 Series Modules - 169459-01

Name: Bently Nevada 3500 Series Modules - 169459-01
Brand: Bently Nevada

Model: 169459-01

Brand Bently Nevada

Series 3500

Model 169459-01

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Technical Dossier

Product Details And Specifications

Bently Nevada 3500 Series Technical Notes

The Evolution of 3500 Series Architecture

The 3500 platform was introduced in 1995 as a successor to the 3300 Series, addressing the industry's demand for higher channel density, digital communication, and deterministic trip response times. The original architecture centered on a 16-slot rack (P/N 3500/05) with a dedicated power supply bay and a system monitor module occupying fixed slots. Early firmware revisions (pre-2002) used RS-232/RS-422 serial communication for host connectivity. The introduction of the 3500/92 Ethernet Communication Gateway in the early 2000s marked the first major architectural shift, enabling Modbus TCP and OPC-DA integration with DCS platforms such as Honeywell Experion, Emerson DeltaV, and ABB 800xA.

The second architectural evolution came with the introduction of Enhanced Transient Data Interface (ETDIX) modules, which allowed high-speed waveform capture without interrupting the protection function — a critical requirement for API 670 Fifth Edition compliance. Modules manufactured after 2010 carry a revised PCB layout with improved EMI shielding and conformal coating rated for Zone 2 / Division 2 hazardous area installation. Plants operating pre-2010 hardware in humid or corrosive environments should treat these modules as high-priority replacement candidates in their maintenance CAPEX planning. Compatibility between early and late-generation 3500 modules is generally maintained at the rack level, but firmware version alignment between the System Monitor (3500/20) and I/O modules is mandatory — mismatched firmware is the leading cause of nuisance trips during module hot-swap operations.

3500 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the most frequently sourced modules across the 3500 Series. Each entry reflects the module's primary protection function as defined in the Bently Nevada product documentation.

Controllers & System Monitors

3500/20: System Monitor — rack health supervision, keyswitch control, and event log storage.
3500/22M: Enhanced System Monitor with expanded memory and Modbus RTU/TCP output.
3500/25: Rack Interface Module — primary DCS communication gateway for legacy serial protocols.

Power Supply Modules

3500/15: Standard AC/DC Power Supply, 115/230 VAC input, redundant-capable.
3500/15-05-00-00: Dual-input power supply with internal transfer relay for uninterrupted rack power.

Radial Vibration & Position Monitors

3500/40M: Proximitor/Seismic Monitor — 4-channel radial vibration and position, API 670 compliant.
3500/42M: Proximitor/Seismic Monitor with enhanced transient capture (ETDIX-compatible).
3500/44M: Aeroderivative Turbine Monitor — optimized for high-speed shaft vibration measurement.
3500/45: Position Monitor — axial thrust and differential expansion measurement, 2-channel.
169459-01: I/O Module — field wiring termination and signal conditioning interface for 3500 rack I/O expansion.

Speed & Overspeed Detection

3500/50M: Tachometer Monitor — speed measurement and overspeed detection, SIL 2 rated.
3500/53: Overspeed Detection System — triple-redundant voting logic, API 670 / IEC 61511 compliant.

Temperature & Process Monitors

3500/60: Temperature Monitor — 16-channel thermocouple/RTD input, configurable alarm setpoints.
3500/62: Process Variable Monitor — 4–20 mA analog input, configurable for pressure, flow, or temperature.

Communication & Networking

3500/92: Ethernet Communication Gateway — Modbus TCP, OPC-DA, and BNCN network interface.
3500/93: Communication Gateway with dual Ethernet ports for redundant DCS network topologies.

Relay Output Modules

3500/32: Relay Output Module — 4 SPDT relay outputs, configurable for latching or non-latching trip logic.
3500/33: Enhanced Relay Output Module — 8 relay outputs with individual LED status indicators.

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