Module Overview

Module type: Communication gateway module

System compatibility: Bently Nevada 3500 monitoring framework

Function: Data forwarding and bidirectional communication between the 3500 system and external control / monitoring systems

Communication Interfaces

Ethernet: RJ45, 10/100 Mbps

Serial ports: RS232 / RS422 / RS485

Supported Communication Protocols

Serial: Modbus RTU

Ethernet: Modbus TCP

Fieldbus / Industrial Ethernet: PROFIBUS-DP, Ethernet/IP

Advanced protocols (optional): OPC UA

Native protocol: Bently Nevada proprietary communication protocol

Data Exchange Capability

Communication mode: Bidirectional read/write

Supported data types:

Real-time monitoring values

Alarm and event status

Configuration and parameter data

Redundancy and Reliability

Redundancy support: Communication redundancy configuration supported

Reliability: Prevents data loss due to single-point communication failures, ensuring continuous monitoring of critical equipment

Power Supply and Environmental Specifications

Power supply:

Supplied directly from the 3500 rack backplane

±5 V DC, +24 V DC

Operating temperature: –40 ℃ to +70 ℃

EMI/RFI immunity:

Meets industrial-grade EMI/RFI protection standards

High resistance to electromagnetic interference in harsh industrial environments

Installation and Maintenance

Installation method: 3500 rack slot installation

Maintenance: Supports hot swapping (online replacement), simplifying maintenance and reducing downtime

Key Features

Multi-protocol compatibility:
Supports mainstream industrial communication protocols, enabling seamless integration with DCS, PLC, and SCADA systems across diverse automation architectures.

Bidirectional data exchange:
In addition to uploading monitoring data, external systems can modify alarm thresholds and configuration parameters within the 3500 framework, improving operational flexibility.

Redundancy design:
Communication link redundancy ensures uninterrupted data transmission and continuous protection of critical rotating machinery.

Software compatibility:
Fully compatible with 3500 Rack Configuration Software and data acquisition software. Supports custom Modbus register mapping for flexible system integration.

Hot-swappable and anti-interference design:
Surface-mounted architecture with strong EMI/RFI immunity, suitable for installations in strong electromagnetic environments.

Applications and Typical Use Cases

Applicable industries:
Power generation (turbines, generators), petrochemical industry (compressors, pumps), metallurgy (fans, gearboxes), papermaking, and other sectors requiring large-scale rotating machinery condition monitoring.

BENTLY 3500/91-01-02-02 Communication Gateway Module

Typical application:
Installed in the 3500 monitoring rack to transmit vibration, shaft displacement, speed, temperature, and other condition data to a central control system, enabling remote monitoring, alarm linkage, and historical data analysis.

Upgrade and Replacement Information

Model evolution:
The 3500/92 is an upgraded replacement for the 3500/90, offering full functional compatibility with enhanced flexibility through a configurable Modbus register tool.