3500/90 125728-01 | Bently Nevada 3500 System Communication Gateway

Product Overview

The Bently Nevada 3500/90 125728-01 acts as the primary data bridge between the 3500 Machinery Protection System and external plant control systems. This Communication Gateway module collects status and measurement data from all monitors in the rack and transmits it to your PLC or DCS. It eliminates the need for complex hardwiring by providing digital access to all rack parameters. We provide this module in 100% brand new, original condition to ensure maximum system integrity.

Part Number Breakdown: 3500/90

• 3500/90: Main Monitor Module - Communication Gateway

• 125728-01: Specific I/O Module (Non-High Availability) supporting Ethernet and Serial interfaces

Technical Specifications

• Operating Temperature: -40°C to +80°C (-40°F to +176°F)

• Storage Temperature: -40°C to +85°C (-40°F to +185°F)

• Primary Interface: Ethernet Port (TCP/IP)

• Serial Interfaces: RS232, RS422, and RS485 (Field Configurable)

• Supported Protocols: Modbus/TCP and Modicon Modbus (RTU)

• Status Indicators: Front panel LEDs for module health and TX/RX traffic

• Condition: Brand New, Factory Sealed

Engineering Advantages

The 3500/90 125728-01 optimizes plant-wide data transparency through several key design features:

• Unified Data Access: This module consolidates all vibration, position, and temperature data from the 3500 rack into a single digital stream. This reduces the I/O load on your PLC and simplifies your network architecture.

• Thermal Resilience: Industrial environments often experience extreme temperature swings. This module operates reliably up to +80°C, preventing data dropouts in unconditioned cabinets or remote enclosures.

• Legacy and Modern Protocol Support: By offering both Ethernet (Modbus/TCP) and Serial (RS485) connectivity, the 125728-01 connects to both modern high-speed networks and older legacy DCS systems simultaneously.

• Electromagnetic Hardening: Bently Nevada utilizes heavy-duty shielding on the I/O circuitry to block high-frequency noise from nearby variable frequency drives (VFDs), ensuring clean data transmission.

FAQs

• Does the 125728-01 support full rack configuration?

  No, this module focuses on data export (Modbus). To configure the 3500 rack settings, you must use the 3500/01 Rack Configuration Software via the Rack Interface Module (RIM).

• Can I replace an older 3500/90 version with this 125728-01 module?

  Yes, this current hardware revision replaces older 3500/90 components. Always verify your current 3500 backplane firmware version to ensure full protocol compatibility.

• What cable type should I use for the Ethernet connection?

  We recommend using high-quality shielded Cat5e or Cat6 cables. The shielding protects the Modbus/TCP packets from the electrostatic discharge common in industrial environments.

• Is this a genuine Bently Nevada part?

  Yes. We supply only 100% brand new and original Bently Nevada equipment. Each module arrives in its original factory packaging with a full 1-year warranty.