81546-01 ASSY79748-01: What relay construction is identified by spare 81546-01?

The 3300/16 ordering table identifies 81546-01 as the dual-hermetic relay spare module.

81546-01 ASSY79748-01: Which monitor accepts the 81546-01 relay assembly?

It is listed for the 3300/16 XY/Gap Dual Vibration Monitor and must match that monitor’s relay-module position and alarm wiring.

81546-01 ASSY79748-01: Which part number is ordered for the ATEX-approved spare?

The ordering table gives option 02 in parentheses, so the ATEX spare is 81546-02 rather than 81546-01.

81546-01 ASSY79748-01: Can alert and danger relay coils be configured normally energized?

Yes. Alert and Danger relay modes are individually field-programmable as normally de-energized or normally energized.

81546-01 ASSY79748-01: Which voting modes are available with the dual-hermetic module?

The monitor supports OR or AND voting for relay drive; verify the installed jumper configuration before replacement.

81546-01 ASSY79748-01: Which reset behaviors must be preserved?

Both Alert and Danger reset functions can be latching or nonlatching, so the as-found selections must be recorded and restored.

81546-01 ASSY79748-01: What alarm delay selections can affect acceptance testing?

The monitor provides 0.1, 1, 3, or 6 second alarm-delay selections; the controlled test must verify the installed delay.

81546-01 ASSY79748-01: What must be checked after installing ASSY79748-01?

Confirm the parent 3300/16 is OK, then test the documented Alert and Danger relay outputs, voting logic, reset behavior and recorder response without bypassing machinery-protection interlocks.

81546-01 ASSY79748-01

Name: 81546-01 ASSY79748-01
Brand: Bently Nevada
SKU: ASSY79748-01

3300/16 Dual Hermetic Relay Module Assembly

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

Bently Nevada 81546-01 ASSY79748-01 is a dual-hermetic spare relay module assembly for the 3300/16 XY/Gap Dual Vibration Monitor. It provides the matched alert and danger relay interface for the documented monitor configuration.

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Technical specifications for 81546-01 ASSY79748-01

Manufacturer:

Bently Nevada
Product Category:

Machinery Monitoring Systems
Spare Part Number:

ASSY79748-01
Estimated shipping dimensions:

5x9.8x22.8cm
Weight:

0.4 kg
Tariff Code:

8537101190
Counliy of origin:

USA
Relay construction:

Dual hermetically sealed relays
Parent monitor:

3300/16 XY/Gap Dual Vibration Monitor
ATEX spare option:

81546-02
Alert relay mode:

Normally de-energized or normally energized
Danger relay mode:

Normally de-energized or normally energized
Relay voting:

OR or AND; field-programmable
Alert reset:

Latching or nonlatching
Danger reset:

Latching or nonlatching
Alarm time delay:

0.1, 1, 3, or 6 seconds
Installation context:

Matched rear relay-module position of the configured 3300/16

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Information

Overview Manuals Common Applications Product Precautions

Bently Nevada 81546-01 ASSY79748-01 provides dual-hermetic alert and danger relay interfacing for a matched 3300/16 XY/Gap monitor in a documented Bently Nevada 3300 Monitoring System installation.

3300/16 Dual Hermetic Relay Module Assembly
ASSY79748-01
Dual hermetically sealed relays
Dual-hermetic alert and danger relay interfacing for a matched 3300/16 XY/Gap monitor

The component remains matched to its documented rack position, mating hardware, wiring and approved configuration. Commissioning preserves that architecture and verifies the protection function under controlled conditions.

Important Notice: Confirm 81546-01 ASSY79748-01, its exact Bently Nevada 3300 Monitoring System host, installed position, mating hardware, wiring, alarm logic, configuration, diagnostics and controlled acceptance evidence before release.

81546-01 ASSY79748-01 Manuals & Downloads

These documents are different: the first consolidates verified product and system data; the second provides installation checks, commissioning steps and acceptance records.

Matched 3300/3500 rack service

Restores dual-hermetic alert and danger relay interfacing for a matched 3300/16 XY/Gap monitor in the documented machinery-monitoring architecture.

Exact-execution replacement

Uses the complete 81546-01 ASSY79748-01 identity instead of a neighboring option or revision.

Machinery-protection refurbishment

Preserves the installed host position, connectors, alarm logic and approved configuration.

Controlled recommissioning

Confirms hardware identity, diagnostics and the affected protection function before return to operation.

Read the applicable Bently Nevada installation instructions before work. Verify 81546-01 ASSY79748-01, the installed host system and all configured field interfaces before isolation, wiring or commissioning.

Confirm the complete 81546-01 ASSY79748-01 marking and the documented 3300/16 Dual Hermetic Relay Module Assembly execution.

Place the machinery-protection system and connected process in the approved maintenance state.

Isolate rack power and field circuits, prove the safe state and apply ESD controls.

Record the rack position, mating hardware, connectors, alarm wiring and as-found configuration.

Verify every option and limit against the exact manufacturer ordering or spare-parts record.

Restore grounding, shielding, wiring, relay logic and the approved monitor configuration.

Energize under control and review rack, channel and alarm diagnostics.

Complete a controlled functional test of dual-hermetic alert and danger relay interfacing for a matched 3300/16 XY/Gap monitor before service release.

Alternative Names

81546 01 ASSY79748 01

Technical notes

Install 81546-01 ASSY79748-01 only in the documented Bently Nevada 3300 Monitoring System position. Preserve the exact mating interfaces and option settings, then verify diagnostics and dual-hermetic alert and danger relay interfacing for a matched 3300/16 XY/Gap monitor under controlled conditions.

FAQ View All FAQ

81546-01 ASSY79748-01: What relay construction is identified by spare 81546-01?

The 3300/16 ordering table identifies 81546-01 as the dual-hermetic relay spare module.
81546-01 ASSY79748-01: Which monitor accepts the 81546-01 relay assembly?

It is listed for the 3300/16 XY/Gap Dual Vibration Monitor and must match that monitor’s relay-module position and alarm wiring.
81546-01 ASSY79748-01: Which part number is ordered for the ATEX-approved spare?

The ordering table gives option 02 in parentheses, so the ATEX spare is 81546-02 rather than 81546-01.
81546-01 ASSY79748-01: Can alert and danger relay coils be configured normally energized?

Yes. Alert and Danger relay modes are individually field-programmable as normally de-energized or normally energized.

81546-01 ASSY79748-01: Which voting modes are available with the dual-hermetic module?

The monitor supports OR or AND voting for relay drive; verify the installed jumper configuration before replacement.
81546-01 ASSY79748-01: Which reset behaviors must be preserved?

Both Alert and Danger reset functions can be latching or nonlatching, so the as-found selections must be recorded and restored.
81546-01 ASSY79748-01: What alarm delay selections can affect acceptance testing?

The monitor provides 0.1, 1, 3, or 6 second alarm-delay selections; the controlled test must verify the installed delay.
81546-01 ASSY79748-01: What must be checked after installing ASSY79748-01?

Confirm the parent 3300/16 is OK, then test the documented Alert and Danger relay outputs, voting logic, reset behavior and recorder response without bypassing machinery-protection interlocks.

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