Bently Nevada 3500/91-01-01-00 EGD Communication Gateway Module

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Bently Nevada 3500/91-01-01-00

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Key Features

• Native EGD Protocol Support – Uses EGD (version 2.01) and Ethernet UDP/IP for deterministic, real-time data exchange 

• Dual Isolated Ethernet Ports – Two 10/100BASE-TX RJ45 ports support redundant plant control LAN connections 

• Producer/Consumer Data Architecture – Publishes rack status, module health, channel data, float values, and setpoints to external systems 

• Consumer Command Support – Enables remote execution of Group Reset, Trip Multiply, Alarm Inhibit, and Special Alarm Inhibit 

• High-Speed Data Acquisition – Full rack data scan ≤200 ms with configurable EGD broadcast refresh (100–1000 ms) 

• 1500VAC Galvanic Isolation – Separates dual Ethernet ports and rack backplane core logic 

• Hot-Swap Capable – Can be inserted or removed without system shutdown 

• Industrial-Grade Construction – Designed for continuous operation in harsh environments 

Technical Parameters

Core Advantages

1. High-Speed, Deterministic Data Communication

The 3500/91 provides a dedicated Ethernet path for real-time machinery data. With a full rack scan of ≤200 ms and configurable broadcast cycles from 100–1000 ms, critical vibration, displacement, and temperature data is delivered with low latency . This makes it ideal for controller applications and automated process interlocks where response time is critical .

2. Seamless Integration with GE Control Environments

As a native EGD gateway, the 3500/91 integrates directly with GE Mark* VIe turbine control systems and other EGD-compatible controllers . The producer/consumer data exchange model allows for efficient, deterministic data sharing without complex polling architectures .

3. Network Redundancy and Reliability

Dual isolated Ethernet ports support separate plant control LAN connections, ensuring fault-tolerant data transmission . If one network path fails, the second port maintains connectivity. The 1500VAC galvanic isolation between ports and backplane logic protects against electrical noise and ground loops .

4. Multi-Protocol Flexibility

Beyond EGD, the module supports Modbus TCP and OPC, enabling integration with virtually any upper-level control system, DCS, or SCADA platform . This eliminates data silos and enables unified plant-wide monitoring .

5. Remote Control Capability

The module's consumer command functions allow external systems to remotely perform operations such as Group Reset, Trip Multiply, Alarm Inhibit, and Special Alarm Inhibit . This enhances operational flexibility and enables automated control responses.

6. Rugged Industrial Design

Engineered for demanding environments with an operating range of -30°C to +65°C and 95% humidity tolerance . Conformal coated variants are available for offshore and harsh cabinet duty .

Applications

Primary Functions

• Machinery Protection Data Integration – Transfers vibration, displacement, speed, temperature, and alarm status from all 3500 rack monitor cards to plant control systems 

• Turbine Control Integration – Pushes real-time machinery health data to GE Mark VIe turbine controllers for automated process interlocks and comprehensive unit monitoring 

• Condition Monitoring – Broadcasts machinery health values to System 1 historian, OPC servers, and plant-wide DCS 

• Remote Alarm Management – Enables remote execution of reset, trip multiply, and alarm inhibit commands from external control systems 

Industry Applications

Recommended Models & Ordering Information

The 3500/91 gateway module is available in various configurations. Select based on your I/O module requirements:

Frequently Asked Questions (FAQ)

Q1: What does the 3500/91-01-01-00 do?

It is an EGD (Ethernet Global Data) Communication Gateway Module that transfers real-time machinery protection and condition monitoring data from the 3500 rack to external systems such as DCS, PIMS, and GE Mark VIe controllers .

Q2: What protocols does the module support?

The module supports EGD (version 2.01) and Ethernet UDP/IP natively, as well as Modbus TCP and OPC for broader system integration .

Q3: What is the difference between the 3500/91 and 3500/92?

The 3500/91 is an EGD Ethernet gateway with native EGD protocol support for GE control environments. The 3500/92 is a Serial Modbus RS485 gateway and does not support EGD Ethernet .

Q4: What is the typical power consumption?

The module consumes approximately 7.4 W typical .

Q5: What is the operating temperature range?

The module operates from -30°C to +65°C (-22°F to +150°F) .

Q6: Does the module support network redundancy?

Yes. It features two isolated 10/100 Ethernet ports that can be connected to separate plant control LANs for fault-tolerant data transmission .

Q7: Can I replace the module while the system is running?

Yes, the module supports hot swapping when installed in a redundant rack configuration .

Q8: What data does the module transmit to external systems?

The module publishes rack status, module health, channel condition monitoring data, floating-point process variables, alarm setpoints, and dynamic machinery measurements (vibration, displacement, speed, temperature) .

Q9: What certifications does the module carry?

The module carries CE, UL, CSA, ATEX Zone 2, and IECEx certifications, and is compliant with EMC Directive 2014/30/EU, LV Directive 2014/35/EU, and RoHS Directive 2011/65/EU .

Q10: Can the module receive commands from external systems?

Yes. The module supports consumer commands including Group Reset, Group Trip Multiply, Group Alarm Inhibit, and Group Special Alarm Inhibit .