Description

Overview

The Bently Nevada 3500/91-01-01-01 is a dedicated Ethernet Global Data (EGD) gateway module developed for the 3500 Machinery Protection System. The module provides deterministic Ethernet communication between the 3500 monitoring rack and external automation platforms including GE Mark VI/Mark VIe turbine controllers, DCS systems, and industrial SCADA networks.

This communication interface transfers machinery protection data, channel diagnostics, alarm conditions, and rack operating parameters across industrial Ethernet networks using EGD v2.01 over UDP/IP. The module is optimized for applications requiring low-latency data transmission and continuous controller synchronization in critical rotating equipment environments.

The 3500/91-01-01-01 configuration includes a single RJ-45 10/100BASE-TX Ethernet interface and is designed for installation within standard 3500 rack architectures.

Core Functions

• Ethernet Global Data (EGD) communication interface

• Real-time rack and channel data transfer

• High-speed Ethernet connectivity for controller integration

• Continuous monitoring status transmission

• Alarm and setpoint synchronization

• Producer and consumer EGD data support

• Direct integration with GE turbine control systems

• Rack-powered operation with hot-swappable capability

Technical Specifications

Parameter	Specification
Model Number	3500/91-01-01-01
Product Type	EGD Communication Gateway Module
Compatible Platform	Bently Nevada 3500 Series
Communication Protocol	EGD Version 2.01
Network Transport	UDP/IP
Ethernet Standard	IEEE 802.3 / IEEE 802.3u
Ethernet Speed	10 Mbps / 100 Mbps
Network Port	Single RJ-45 10/100BASE-TX
Typical Power Consumption	7.4 W
Power Supply Source	3500 rack backplane

Supported Data Types

The gateway supports transmission of multiple operational and protection-related data structures, including:

• Floating-point process variables

• Rack status information

• Module diagnostics

• Channel operating conditions

• Alarm states

• Protection setpoints

• System health parameters

EGD Data Exchange Functions

Producer Functions	Consumer Functions
Channel measurements	Group Reset
Alarm information	Alarm Inhibit
Setpoint transmission	Trip Multiply
System diagnostics	Special Alarm Inhibit
Module status	Remote control commands

Mechanical Specifications

Item	Details
Dimensions	241.3 × 24.4 × 241.8 mm
Weight	0.79 kg
Front Slot Requirement	1 full-height slot
Rear I/O Requirement	1 dedicated rear slot

Environmental Specifications

Parameter	Value
Operating Temperature	-30°C to +65°C
Storage Temperature	-40°C to +85°C
Relative Humidity	Up to 95% non-condensing
Vibration Resistance	Conforms to 3500 system requirements

Front Panel Indicators

Integrated LEDs provide immediate visual indication of module and communication status.

Indicator	Function
OK	Module operational status
TX/RX	Ethernet communication activity

Industrial Applications

The Bently Nevada 3500/91-01-01-01 module is commonly applied in industrial systems requiring fast Ethernet-based machinery monitoring integration, including:

• Steam and gas turbine protection

• Compressor monitoring systems

• Pipeline pumping stations

• Refinery process equipment

• Power generation facilities

• Offshore rotating machinery systems

• Industrial DCS and SCADA networks

3500/91-01-01-01 vs 3500/90 Communication Modules

Feature	3500/91-01-01-01	3500/90
Primary Protocol	EGD	Modbus TCP/RTU
Network Architecture	Real-time Ethernet	General-purpose communication
Controller Integration	GE Mark VI/VIe	PLC/DCS platforms
Ethernet Port Type	Single RJ-45	Ethernet and serial options
Data Exchange Model	Producer/Consumer	Polling-based

FAQ

What is the function of the 3500/91-01-01-01 module?

The module enables high-speed Ethernet communication between the 3500 machinery protection rack and external automation systems using the EGD protocol.

Which Ethernet interface is included in this version?

This configuration includes a single RJ-45 10/100BASE-TX Ethernet port for copper network connections.

Can the module communicate with GE turbine controllers?

Yes. The module is specifically designed for integration with GE Mark VI and Mark VIe control systems using Ethernet Global Data communication.

Does the module support hot replacement?

Yes. The module supports hot-swappable installation within compatible 3500 rack configurations.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems