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Bently Nevada 125720-01 | 3500/32 4-Channel Relay Output I/O Module

Bently Nevada 125720-01 | 3500/32 4-Channel Relay Output I/O Module

Original price was: $850.00.Current price is: $730.00.

  • Description: 3500/32 Series 4-Channel Relay Interface I/O Module
  • Brand/Manufacturer: Bently Nevada (Baker Hughes Asset Performance)
  • Model System Compatibility: 3500 Machinery Protection System
  • Part Number (P-Number): 125720-01
  • Relay Output Array: 4 Independent Single-Pole, Double-Throw (SPDT) Contacts
  • Warranty: 12 Months Factory-Level Performance Protection
  • Condition: 100% Brand New & Original Factory Sealed
  • Country of Origin – COO: USA
  • Weight: Net weight 0.40 kg (0.88 lbs)
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Description

1. Product Overview

The Bently Nevada 125720-01 is a high-integrity, rear-mount 4-Channel Relay I/O Module engineered to serve as the critical machine-protection control interface within the industry-standard 3500 Series Machinery Protection System. Working in direct synchronization with the front-facing 3500/32 or 3500/32M main processing modules, this card routes software-driven alarm decisions directly to heavy-duty physical dry contacts, bridging micro-logic data loops over to plant emergency shutdown systems (ESD).

The 125720-01 provides 4 fully isolated Single-Pole, Double-Throw (SPDT) relay outputs. Utilizing the 3500 Rack Configuration Software, each output channel is independently programmable to execute complex industrial voting matrix equations (1oo2, 2oo2, 2oo3, etc.). Driven by an onboard specialized “Alarm Drive Logic” processor, the module processes “Alert” and “Danger” alarm inputs, Not-OK status alerts, and Individual Position Phase Locks (PPLs) from any combination of vibration, temperature, or thrust monitors housed across the same chassis grid.

Key Applications:

  • Steam & Gas Turbine Interlocks: Deploying immediate, low-latency trip signals to hydraulic oil dump valves when radial vibration limits are breached.
  • Large Centrifugal Compressors: Managing surge protection and housing acceleration alert loops across complex hydrocarbon processing trains.
  • Hydroelectric Generator Rails: Routing multi-point bearing temperature alarms directly to central plant control networks.
  • Heavy Industrial Cooling Fans: Securing high-vibration automatic motor de-energization inside petrochemical refining towers.

 

2. Technical Features

Feature Technical Specification
Module Topology 3500 System Full-Height Rear-Panel Interface Board
Exact Ordering Reference 125720-01 (Standard system application build code)
Relay Contact Architecture 4 SPDT Form C dry relays with integrated 250 Vrms arc suppressors
Contact Load Rating (Standard) Max switched current 2 A @ 30 Vdc or 2 A @ 250 Vac (Resistive load profiles)
Switch Selection States Hardwired onboard switches configuring Normal Energized (NE) or Normal De-energized (ND) options
Physical Component Sealing Epoxy-sealed relay capsules protecting mechanical nodes from dust ingress
Local Status Interface Onboard LED lines mapping OK hardware state, TX/RX metrics, and active CH ALARM states
Response Latency High-velocity total trip signal execution profile tracking under 50 milliseconds

 

3. Procurement & Commercial Protocol

  1. Model Code Validation: Our logistics desk cross-references your exact RFQ against the 125720-01 part string to eliminate system configuration errors before shipping.
  2. Transparent Commercial Proposal: Get a fast, competitive quote outlining volume-based wholesale tier pricing, live warehouse stock levels, and priority air shipping times.
  3. Cross-Border Clearance Support: Prompt generation of international trade documentation, customs tariff clearance details, and clean invoices to ensure zero port delays.
  4. Proforma Invoice Dispatch: Standard corporate Proforma Invoices (PI) are dispatched instantly to speed up your facility’s internal corporate authorization loop.
  5. Verified Monetary Settlement: Safe, standard corporate financial transactions processed directly via global Telegraphic Transfer (T/T wire).
  6. Meticulous Physical Inspection: Each card undergoes manual quality checks to ensure edge connectors are pristine, terminal contacts are straight, and original labels are intact.
  7. Heavy-Duty Export Fortification: Enclosed in premium anti-static (ESD) protective shielding bags and packed within shock-proof dense foam layers inside a heavy-walled exterior box.
  8. Priority Air Freight Logistics: Shipped immediately through premium couriers (DHL, FedEx, UPS) with trackable shipping numbers generated right away.

 

4. Products Showcase (Visual Assets)

5. Related Bently Nevada Hardware

  • Bently Nevada 3500/32M (149986-02) (Main 4-Channel Relay Control Module Front Card)
  • Bently Nevada 125720-02 (Relay I/O Module Version for Functional Safety / Hazardous Networks)
  • Bently Nevada 3500/15 (127610-01) (High-Efficiency Dual Redundant System Power Supplies)
  • Bently Nevada 3500/22M (146031-01) (Transient Data Interface / TDI Logic Processors)

 

6. Warranty & After-Sales Assurances

  • 12-Month Performance Warranty: Comprehensive 1-year coverage guarding all logic signal tracking, relay contacts, and indicator paths against premature operational faults.
  • 100% Originality Verification: We distribute exclusively genuine factory-labeled Bently Nevada components to protect the structural compliance parameters of your plant.
  • Documentation Provision: Direct download access to original mounting cutout diagrams, communication bus shielding guidelines, and configuration manuals.

 

7. FAQ

Q: Do you have the Bently Nevada 125720-01 module in stock for immediate international shipment?

Yes. We prioritize keeping high-demand Bently Nevada machinery protection modules ready in our global logistic hubs. Once your corporate wire payment is confirmed, items are typically cleared and dispatched to air couriers within 24 to 48 hours to minimize your emergency plant downtime.

Q: Does this card come with the 16-position green wiring block header, or is that sold separately?

When supplied as a complete, factory-standard spare module, our 125720-01 includes the necessary 16-position green internal termination connector headers. This allows your field wiring team to execute an immediate drop-in replacement upon unboxing.

Q: Can the 125720-01 be installed in a hot-swap manner while the rack is turned on?

While the 3500 system infrastructure supports hot-swapping for many of its monitoring channels, pulling or sliding a live 125720-01 relay card can cause localized contact state transitions. To protect your operation from accidental false voting trips on external equipment, it is strongly recommended to temporarily bypass or isolate the output trip loops before performing any physical board swap.

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