BENTLY 149992-01 | Direct Replacement Relay Output

• Model: 149992-01
• Brand: Bently Nevada
• Series: 3500
• Core Function: Provides 16 programmable relay outputs
• Type: Spare 16-Channel Relay Output Module
• Key Specs: 16 relay channels; 3500/33 platform; 1 full-height rear I/O slot

Product Introduction

Bently Nevada 149992-01 is the spare 16-Channel Relay Output Module for the 3500/33 relay module platform. It provides relay outputs for alarm and control functions within a Bently Nevada 3500 Machinery Condition Monitoring System. The manufacturer’s datasheet identifies 149992-01 specifically as the spare version of the 16-channel relay output module.

Each relay can be configured through the 3500 Rack Configuration Software to respond to alarm conditions, NOT-OK status, individual measured variables, or combinations of monitor-channel conditions. The 3500/33 requires Rack Configuration Software version 3.3 or later, with additional software-version requirements depending on the system configuration.

Key Technical Specifications

BENTLY 149992-01

The dimensions and weight above are from the published 3500/33 datasheet for the spare module, not the complete installed 3500/33 assembly.

Application

The 149992-01 is intended for Bently Nevada 3500 machinery protection and condition-monitoring systems where relay outputs are required for alarm or control logic.

Typical uses include:

• Turbine monitoring systems
• Compressor protection
• Generator monitoring
• Rotating machinery protection
• Alarm annunciation
• Shutdown or trip logic interfaces
• DCS/PLC alarm interfaces

The relay logic is configurable rather than simply being a fixed 16-point contact output. This matters when replacing an installed module: preserve the existing rack configuration and verify the programmed relay logic before returning the system to service.

Compatibility and Replacement Notes

149992-01 should not be confused with 149986-01.

The manufacturer’s ordering information identifies:

• 149986-01: Spare 16-Channel Relay Control Module
• 149992-01: Spare 16-Channel Relay Output Module
• 149992-02: Spare 16-Channel Failsafe Relay Output Module
• 149992-03: Spare 16-Channel Low Current Relay Output Module
• 149992-04: Spare 16-Channel Low Current Failsafe Relay Output Module

That distinction is important during MRO procurement. A failsafe or low-current variant is not automatically an electrical substitute for the standard 149992-01.

BENTLY 149992-01

Software and System Requirements

Before installing a replacement, verify the 3500 software environment.

The published documentation specifies:

• 3500 Rack Configuration Software: V3.3 or later
• 3500 Data Acquisition Software: V2.40 or later
• 3500 Data Display Software: V1.40 or later
• When paired with a 3500/93 LCD Display, the display requires firmware revision P or later.

These requirements are easy to overlook when replacing a spare module during a shutdown.

Quality Inspection

For a stocked 149992-01 spare, the recommended inspection sequence is:

1. Inbound inspection
   • Verify part number and product labeling.
   • Check serial/traceability information where applicable.
   • Inspect PCB, connectors, terminal interfaces, and housing.
   • Check for corrosion, impact damage, contamination, or previous repair evidence.
2. Functional inspection
   • Confirm module identification.
   • Inspect relay output channels.
   • Where a compatible 3500 test setup is available, perform controlled functional testing.
   • Record test results.
3. Electrical inspection
   • Verify grounding continuity where applicable.
   • Perform insulation checks according to the applicable maintenance procedure.
   • Avoid applying test voltages outside the manufacturer’s specified procedure.
4. Configuration verification
   • Record existing relay logic and rack configuration before replacement.
   • Preserve configuration data where applicable.
   • Confirm software compatibility.
5. Final packaging
   • Use ESD protection.
   • Seal the module in an anti-static bag.
   • Use protective cushioning and rigid outer packaging.
   • Provide QC records when requested.

Technical Pitfalls

1. Confusing the relay module with the control module

The 3500/33 architecture distinguishes the relay output module from the relay control module. Check the complete part number before ordering.

2. Selecting the failsafe variant by mistake

149992-02 is a failsafe relay output variant. Do not substitute it for 149992-01 without confirming the application’s required relay behavior.

3. Ignoring software revisions

A physically correct replacement can still create commissioning problems if the associated 3500 software environment is outside the documented requirements.

4. Losing relay logic configuration

The relay outputs can be programmed using alarm inputs, NOT-OK status, individual measured variables, and combinations of monitor channels. Record the configuration before removing the old module.

5. Treating the module as a generic 16-channel relay card

It is a 3500-series system component, not a generic relay output module. Its rack position, configuration software, and associated 3500 hardware must be considered together.

Related Models

• 149986-01 — Spare 16-Channel Relay Control Module
• 149992-02 — Spare 16-Channel Failsafe Relay Output Module
• 149992-03 — Spare 16-Channel Low Current Relay Output Module
• 149992-04 — Spare 16-Channel Low Current Failsafe Relay Output Module
• 3500/33 — 16-Channel Relay Module

Quick Conclusion

• 149992-01 is a Bently Nevada 3500-series spare 16-channel relay output module.
• It is associated with the 3500/33 relay module platform.
• The spare module is specified at 241 mm × 24.4 mm × 99.1 mm and approximately 0.4 kg.
• Confirm the distinction between standard, failsafe, and low-current relay variants before purchasing.
• Check the 3500 software revisions and preserve the existing relay logic before replacement.

FAQ

What is Bently Nevada 149992-01?

It is a Spare 16-Channel Relay Output Module associated with the Bently Nevada 3500/33 16-Channel Relay Module.

How many relay outputs does 149992-01 provide?

It provides 16 relay output channels.

Is 149992-01 the same as 149986-01?

No. 149986-01 is the Spare 16-Channel Relay Control Module, while 149992-01 is the Spare 16-Channel Relay Output Module.

What software does the 3500/33 require?

The published datasheet specifies 3500 Rack Configuration Software V3.3 or later and 3500 Data Acquisition Software V2.40 or later.

Can 149992-02 replace 149992-01?

Not by part-number similarity alone. 149992-02 is the failsafe relay output variant, so the required relay behavior must be verified before substitution.