Bently Nevada 3500/15-01-01-00 AC Power Input Module

81544-01 Bently Nevada 4-Channel Machinery Protection Relay

81544-01 Bently Nevada 4-Channel Machinery Protection Relay

Availability: 10 left in stock

Product Overview The Bently Nevada 81544-01 serves as a high-reliability Relay Output Module within the 3500 Machinery Protection System. This full-height module...

SKU: 81544-01

Manufacturer: Bently Nevada
Product No.: 81544-01
Product Type: Bently Nevada 3500 Series
Product Origin: USA
Payment:T/T, Western Union
Weight: 260g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Bently Nevada 81544-01 serves as a high-reliability Relay Output Module within the 3500 Machinery Protection System. This full-height module provides four independent, programmable relay channels that interface directly with the 3500 rack backplane. It functions as the critical link between digital monitoring logic and physical hardware intervention, triggering emergency shutdowns (trips) or annunciating alarms when vibration, temperature, or thrust parameters exceed safety thresholds.

Technical Specifications

This module adheres to rigorous industrial standards to ensure consistent performance in high-stakes environments.

Feature	Specification
Model	81544-01
Module Type	Relay Output (4-Channel)
Relay Configuration	Form C (SPDT) Single Pole, Double Throw
Contact Rating	5 A @ 24 VDC or 120 VAC (Resistive)
Isolation	Channel-to-system isolation for noise immunity
Operating Temp	–30 °C to +65 °C (–22 °F to +149 °F)
Mounting	Full-height slot in 3500 Series Rack
Condition	100% Brand New and Original

Engineering Advantages

Fail-Safe Logic Implementation: Engineers can configure the 81544-01 for "Normally Energized" or "Normally De-energized" states. This flexibility allows the system to trigger a machinery trip even upon a total loss of power, preventing catastrophic mechanical failure.
Superior Signal Isolation: The module incorporates robust channel-to-system isolation. This design prevents electrical noise or ground loops from the field wiring from interfering with the 3500 rack's backplane, maintaining data integrity for neighboring vibration or position monitors.
Rapid Response Time: The 81544-01 processes alarm logic with minimal latency. When a monitor identifies an "Alert" or "Danger" status, the relay reacts near-instantaneously to engage secondary protection layers, such as fuel shut-off valves or motor starters.
Industrial Durability: Built to withstand the harsh electromagnetic interference (EMI) typical of power plants and refineries, the module operates reliably in temperatures ranging from –30 °C to +65 °C.

Part Number Breakdown

While the 81544-01 identifies the specific terminal/module assembly, the 3500/32 series typically follows this configuration logic:

3500/32-XX-XX
-01: 4-Channel Relay Output Module (Standard)
-02: 4-Channel Relay Output Module (Extended/Specialized)
Note: The 81544-01 specifically denotes the Signal and Record terminal components required for proper rack integration and wiring.

FAQs

Q: Does the 81544-01 arrive in original factory packaging?

A: Yes. We supply only 100% Brand New, original Bently Nevada hardware in factory-sealed packaging. Each unit includes a standard 12-month factory warranty.

Q: Can I replace a failed relay module without powering down the entire 3500 rack?

A: The 3500 system supports "Hot Swapping" for many modules; however, because the 81544-01 controls active trip circuits, you must bypass or inhibit the associated voting logic before removal to prevent an accidental machinery shutdown.

Q: What type of wiring is recommended for the 81544-01 terminals?

A: Use high-quality, shielded twisted-pair cabling for all signal connections. Ensure the contact ratings (5 A @ 24 VDC/120 VAC) align with your solenoid or interposing relay requirements to prevent contact welding.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.