Bently Nevada 125720-02 4-Channel Relay Output Module

Availability: 2 left in stock

DescriptionThe Bently Nevada 125720-02 is a 4-Channel Relay Output Module designed for the 3500/32 Machinery Protection System. This full-height module...

SKU: 125720-02

Manufacturer: Bently Nevada
Product No.: 125720-02
Product Type: Relay Output Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

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.

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.