Bently Nevada 3500 Series Modules: 133819-02 I/O Module

Technical Dossier

Product Details And Specifications

Bently Nevada 3500 Series Technical Notes

The Evolution of 3500 Series Architecture

The 3500 Series was engineered as a modular, card-cage platform designed for continuous online monitoring without process interruption. Early rack configurations (late 1990s) centered on analog signal conditioning with dedicated monitor cards per channel pair. The architecture evolved through three distinct phases: the initial analog-only I/O layer (1995–2002), the introduction of digital communication via the 3500/92 communication gateway supporting Modbus and OPC (2002–2010), and the current generation integrating System 1 software compatibility with Ethernet-based data acquisition (2010–present). Compatibility between generations is constrained by backplane revision — early 3500/01 and 3500/05 power supplies are not interchangeable with later -02 and -03 suffix variants without rack-level verification. The -01, -02, and -03 suffix designations on modules such as the 133819-02 denote hardware revision levels affecting firmware compatibility, channel density, and connector pinout. Facilities operating mixed-revision racks must validate module suffix compatibility before substitution to avoid false-trip conditions or loss of monitoring continuity.

3500 Series Full Catalog & Functionalities (SKU List)

The following represents a verified cross-section of the 3500 Series module catalog, organized by functional category. All models listed are confirmed 3500 Series components.

Power Supply Modules

• 133819-02: I/O module providing field signal interface for the 3500 rack backplane; revision -02 hardware.
• 125840-01: 3500/15 Power Supply Module, 115/230 VAC input, single-slot, rack position 0.
• 125840-02: 3500/15 Power Supply Module, revised hardware revision for improved EMI filtering.
• 125680-01: 3500/05 Rack Interface I/O Module, provides backplane communication bus interface.

Vibration Monitor Modules

• 106M1069-01: 3500/40M Proximitor/Seismic Monitor, 4-channel, radial vibration and axial position.
• 135489-01: 3500/42M Proximitor/Seismic Monitor, enhanced channel isolation, API 670 compliant.
• 135489-02: 3500/42M Proximitor/Seismic Monitor, -02 revision with updated relay output logic.
• 140734-01: 3500/44M Aeroderivative Turbine Monitor, high-frequency vibration measurement.
• 149369-01: 3500/45 Position Monitor, thrust and differential expansion measurement.

Speed & Overspeed Modules

• 133442-01: 3500/50 Tachometer Module, single-channel speed measurement, pulse input.
• 133442-02: 3500/50 Tachometer Module, -02 revision, extended frequency range.
• 140672-01: 3500/53 Overspeed Detection System, triple-redundant voting logic, SIL-2 rated.

Temperature Monitor Modules

• 149986-01: 3500/60 Temperature Monitor, 16-channel thermocouple/RTD input, DIN rail compatible.
• 149986-02: 3500/60 Temperature Monitor, -02 revision with expanded thermocouple type support.

Communication & Gateway Modules

• 135180-01: 3500/92 Communication Gateway, Modbus RTU/TCP and OPC server, Ethernet port.
• 135180-02: 3500/92 Communication Gateway, -02 revision, dual Ethernet, System 1 integration.
• 128229-01: 3500/20 Rack Interface Module, primary backplane data bus controller.

Relay Output Modules

• 130944-01: 3500/32 Relay Output Module, 16 SPDT relay outputs, configurable trip logic.
• 130944-02: 3500/32 Relay Output Module, -02 revision, enhanced contact rating 5A/250VAC.