• Bently Nevada 125720-02
  • Bently Nevada 125720-02
  • Bently Nevada 125720-02
1 3

Bently Nevada 125720-02 4-Channel Relay Output Module

Bently Nevada 125720-02 4-Channel Relay Output Module

Description

The Bently Nevada 125720-02 is a 4-Channel Relay Output Module designed for the 3500/32 Machinery Protection System. This full-height module serves as a critical interface between the 3500 rack and...

21 people are viewing this right now

Availability: Low stock: 4 left

SKU: 125720-02
Vendor: Bently Nevada
Category: Relay Output Module
Related Series:

Shipping & Returns

Reliable Worldwide Delivery

  • Carriers: Shipped via DHL, FedEx, UPS, or USPS.
  • Dispatch: Orders processed in 1-2 business days and dispatched within 3-5 business days.
  • Tracking: Full tracking details provided via email upon shipment.

30-Day Money-Back Guarantee

  • Guarantee: 30-day return window for in-stock, factory-sealed products.
  • Condition: Items must be unopened, unused, and in original packaging.
  • Authenticity: We guarantee 100% original and authentic hardware.

Need more details? Read our fullShipping PolicyandRefund Policy.

Authenticity & Warranty

  • Genuine Guarantee: We supply only 100% original, brand-new, and factory-sealed industrial automation parts.
  • Full Coverage: Every component is backed by a 12-month comprehensive warranty from the date of purchase.
  • Traceability: All products come with original factory documentation and accessories for full industrial compliance.

Technical Support & Sourcing

  • Expert Assistance: Our technical team provides free consultation to help you verify compatibility for DCS and PLC systems.
  • Rare Part Sourcing: Specializing in obsolete and hard-to-find components from Allen-Bradley, Siemens, ABB, HIMA, and more.
  • Bulk Inquiries: Contact us at pambo@5gplc.com for volume pricing or customized project quotes.
View full product details

Description

The Bently Nevada 125720-02 is a 4-Channel Relay Output Module designed for the 3500/32 Machinery Protection System. This full-height module serves as a critical interface between the 3500 rack and external equipment, providing four independent relay outputs that can be programmed to perform specific voting logic. It is commonly used to trigger alarms, shutdown mechanisms, or other safety-critical industrial processes.

Features

  • Full-height module design for 3500 series racks.
  • Provides four independent SPDT (Form C) relay outputs.
  • Integrated Alarm Drive Logic supporting AND/OR operations.
  • Programmable via Bently Nevada 3500 Rack Configuration Software.
  • Compatible with various monitor channel inputs, including Alert and Danger statuses.

Applications

  • Steam Turbines: Critical protection within the TSI suite.
  • Gas Turbines: Compatible with H-class, LM6000, and LM2500 systems.
  • Chemical Processing: Safety-critical automation and control.
  • Hydroelectric Turbines: Monitoring for load zones and mechanical failures.
  • Generators & Exciters: Protection for main generator and excitation systems.

Technical Specifications

Parameter Specification
Product Model 125720-02
Output Channels 4
Contact Type SPDT (Form C)
Max Switched Current 2 A per channel
Max Switched Power 450 VA
AC Contact Rating 30 Vac, 2 A max
DC Contact Rating 30 Vdc, 2 A max
Operating Temperature -40 degC to +85 degC
Humidity 0 to 95% RH (non-condensing)

Installation Guidelines

  • Ensure the 3500 rack is powered down before inserting or removing the module to prevent electrical damage.
  • The module can be installed in any slot to the right of the Rack Interface Module (RIM).
  • Use shielded cabling for all relay output connections to minimize EMI/RFI interference.
  • Wiring can be performed directly to the I/O module terminal blocks or via External Termination (ET) blocks for improved cable management.
  • Verify that all connections adhere to the voltage and current limits specified for the -02 variant, particularly in hazardous area or SIL-rated installations.

FAQs

What is the 125720-02?

The 125720-02 is a 4-Channel Relay Output Module used within the Bently Nevada 3500/32 Machinery Protection System to provide relay-based switching for alarm or shutdown logic.

What is the difference between 125720-01 and 125720-02?

The 125720-02 is the designated spare variant for hazardous area and functional safety systems, whereas the 125720-01 is intended for standard applications.

How is the module configured?

Configuration is performed using the Bently Nevada 3500 Rack Configuration Software, which allows for the definition of alarm drive logic using inputs from any monitor channel in the rack.