Bently Nevada 3500/22M Transient Data Interface Module

Name: Bently Nevada 3500/22M TDI Module | Seven Star LLC
Brand: Baker Hughes

Description

Overview

The Bently Nevada 3500/22M Transient Data Interface (TDI) Module, referred to throughout as the Bently Nevada 3500/22M, is the communications and data-collection heart of the Bently Nevada 3500 machinery protection rack, connecting the rack’s monitoring channels to System 1 condition monitoring and diagnostic software as well as 3500 configuration and display software. Occupying Slot 1 of every 3500 rack – the slot immediately adjacent to the power supplies – the 3500/22M combines the rack-interface function previously performed by the 3500/20 RIM module with the high-speed waveform and transient data acquisition capability of a dedicated communication processor, giving reliability engineers who deploy the Bently Nevada 3500/22M continuous visibility into both steady-state values and dynamic vibration waveforms across the entire protection rack.

As the official authorized partner and exclusive regional representative for Bently Nevada, Seven Star LLC proudly supplies the Bently Nevada 3500/22M Transient Data Interface Module to power generation, oil and gas, and petrochemical operators across Oman and the wider GCC. Reliability and maintenance teams in Muscat, Sohar and Salalah rely on Seven Star LLC to source genuine 3500/22M modules and I/O options for both new rack builds and RIM-to-TDI upgrades of existing 3500 systems, with full manufacturer warranty and local technical support.

Measurement Principle

The 3500/22M does not itself sense vibration or process variables – it collects and relays data gathered by the M-series monitor modules installed in the same rack, such as the 3500/40M or 3500/42M proximitor and seismic monitors. Static data capture, including channel values, alarm status and 1X/2X amplitude and phase, is standard on every TDI. With an optional Channel Enabling Disk installed, the module additionally captures dynamic and high-resolution transient waveform data, sampling synchronous waveforms at up to 1,024 samples per revolution and asynchronous spectral data across frequency spans up to 30 kHz, continuously and simultaneously across all operational modes.

During a machine startup, coastdown or alarm event, the TDI automatically captures pre- and post-event data at programmable intervals – static values every 100 milliseconds around an alarm, and waveform snapshots at ten-second intervals before and after – and streams this data over a 10/100 Ethernet or 100Base-FX fiber optic link to System 1 software. Because the TDI operates outside the critical monitoring path, its data-collection and communication functions have no effect on the automatic machinery protection logic executing within the rack, so a network interruption never compromises trip safety.

Engineering Design of the Bently Nevada 3500/22M

Physically, the Bently Nevada 3500/22M consists of a front TDI module and a rear I/O module, available in copper 10Base-T/100Base-TX Ethernet or 100Base-FX fiber optic variants, with a gold-plated OK relay contact option for low-current signaling applications. The front panel provides a USB-B configuration port for direct connection to 3500 configuration software, front-panel status LEDs for OK, TX/RX, Trip Multiply and Configuration status, a rack reset button, and a physical keylock switch that locks the rack in RUN mode to prevent unauthorized configuration changes or unlocks it for PROGRAM mode reconfiguration.

The module supports up to 127 rack addresses on a single network, communicates using both BN Host Protocol for legacy 3500 software and BN TDI Protocol for System 1 integration, and includes an I/O Module OK relay rated 5A at 24 Vdc/120 Vac for annunciating overall rack health to an external DCS or SCADA system. Operating temperature range is –30°C to +65°C, and the module is approved for Class I Zone 2 and Division 2 hazardous locations under cNRTLus and ATEX/IECEx when installed per the manufacturer’s approved drawings.

Key Features

The Bently Nevada 3500/22M Transient Data Interface Module delivers the communications backbone that makes continuous, high-resolution machinery condition monitoring possible across a 3500 protection rack. Reliability teams standardize on the Bently Nevada 3500/22M for its combination of legacy compatibility and modern connectivity:

Combines 3500/20 Rack Interface Module functionality with high-speed transient waveform data collection in a single front-slot module.
Supports up to 48 channels of DC-coupled waveform sampling with configurable synchronous and asynchronous data rates.
Ethernet connectivity via 10Base-T/100Base-TX copper or 100Base-FX fiber optic, with cable runs up to 2,000 metres on fiber.
Automatic pre- and post-alarm data capture at one-second and 100-millisecond intervals for detailed event reconstruction.
Front-panel USB-B port for direct configuration and data retrieval without disturbing rack wiring.
Physical keylock switch to secure the rack against unauthorized configuration changes in RUN mode.
I/O Module OK relay for annunciating overall rack health to external DCS, SCADA or annunciator panels.
ATEX, IECEx and cNRTLus Class I Zone 2 / Division 2 hazardous area approvals for classified installation environments.

Industrial Applications

The 3500/22M is installed in Bently Nevada 3500 racks protecting critical rotating machinery across power generation turbine halls, LNG and gas processing compressor trains, refinery process compressors, and pump stations along oil and gas pipelines, wherever continuous machinery protection is combined with condition-based maintenance through System 1 software. It is also specified in retrofit projects where an operator upgrades an older 3500/20 RIM-based rack to enable transient waveform capture and modern Ethernet connectivity without replacing the entire protection system.

As the officially authorized partner for Bently Nevada, Seven Star LLC distributes the Bently Nevada 3500/22M Transient Data Interface Module to power stations, LNG terminals and process plants throughout Oman and the GCC, including facilities operating in the Sohar and Salalah industrial zones. Reliability engineers across the Sultanate of Oman and neighboring GCC states depend on Seven Star LLC for genuine spare and upgrade modules, RIM-to-TDI migration guidance, and rapid regional delivery to minimize protection-system downtime during planned outages.

Technical Specifications

The table below summarizes the key specifications of the Bently Nevada 3500/22M Transient Data Interface Module; every Bently Nevada 3500/22M ships with a matched I/O module for the selected connectivity option.

Parameter	Specification
Model	Bently Nevada 3500/22M Transient Data Interface Module
Rack Position	Slot 1, front-height module (adjacent to power supplies)
Power Consumption	10.5 Watts
Front Panel Configuration	USB-B port, 3 metre cable included
Ethernet I/O	10Base-T/100Base-TX copper or 100Base-FX fiber optic
Fiber Cable Length	Up to 2,000 metres, multimode
Waveform Channels	Up to 48 channels, DC-coupled
Keyphasor Speed Range	1 to 100,000 rpm (channel-count dependent)
Operating Temperature	–30°C to +65°C (–22°F to +149°F)
Hazardous Area Approvals	ATEX/IECEx, cNRTLus Class I Zone 2 / Division 2
TDI Module Weight	0.91 kg (2.0 lbs)
Dimensions (TDI Module)	241.3 mm x 24.4 mm x 241.8 mm

Request a Quote for Bently Nevada 3500/22M Transient Data Interface Module

Need a genuine Bently Nevada 3500/22M Transient Data Interface Module for a new rack build, spare, or RIM-to-TDI upgrade? The Bently Nevada 3500/22M is available from regional stock through Seven Star LLC. Seven Star LLC processes formal RFQs, maintains regional warehouse stock, and provides technical datasheets for engineering review. As the authorized partner for Bently Nevada in Oman and the GCC, our instrumentation division can help confirm I/O module type and agency approval compatibility with your existing 3500 rack – contact Seven Star LLC today to request a quotation for the 3500/22M.

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About brand

Baker Hughes is a leading global energy technology company that designs, manufactures, and services transformative solutions for the oil and gas sector and heavy industrial networks. At Seven Star LLC, we provide Baker Hughes' advanced portfolio of heavy-duty turbomachinery, centrifugal compressors, precision drilling equipment, and process control technologies. Engineered to operate under extreme pressures, high thermal cycles, and harsh environmental conditions, these systems ensure maximum efficiency, emission reduction, and structural integrity in upstream, midstream, and downstream operations. By supplying authentic Baker Hughes machinery and measurement solutions, Seven Star LLC empowers energy enterprises across Oman and the GCC to achieve rigorous operational stability and long-term asset reliability.

Frequently Asked Questions

What does the Bently Nevada 3500/22M module do inside a 3500 rack?

The 3500/22M is the Transient Data Interface that connects the 3500 machinery protection rack to System 1 condition monitoring software, combining the rack-interface function of the older 3500/20 RIM with high-speed transient waveform data collection from the rack's M-series monitor modules.

Can the 3500/22M replace an older 3500/20 RIM module?

Yes, the 3500/22M is designed as an upgrade path from the 3500/20 Rack Interface Module, though some legacy M-series monitors may require compatibility verification before the upgrade. The RIM and RIM I/O module must be fully removed before installing the new TDI to avoid damage.

Does a network or communications fault affect machinery protection?

No. The 3500/22M provides communication and data-collection functions but sits outside the critical monitoring path, so an Ethernet interruption or loss of communication with System 1 software does not affect the automatic protection and trip logic executing within the 3500 rack.

What Ethernet connectivity options are available on the 3500/22M?

The 3500/22M is available with a 10Base-T/100Base-TX copper Ethernet I/O module or a 100Base-FX fiber optic I/O module, the latter supporting cable runs up to 2,000 metres, both with an optional gold-plated OK relay contact variant for low-current signaling.

Is Seven Star LLC an authorized representative for Bently Nevada products?

Yes, Seven Star LLC is the officially authorized partner and exclusive regional representative for Bently Nevada, a Baker Hughes business, across Oman and the GCC, supplying genuine modules and spares with full manufacturer warranty and local technical support.

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