Description
Product Introduction
⚙️ Product: 3500/91
🏷️ Brand: BENTLY NEVADA
🖥️ Series: 3500 Machinery Protection System
🔧 Product Type: EGD Communication Gateway Module
The BENTLY NEVADA 3500/91 is an EGD (Ethernet Global Data) Communication Gateway designed for the 3500 Machinery Protection System. It provides communication access to monitored values and status information from the 3500 rack and supports integration with EGD-compatible controllers.
🌐 The module supports EGD version 2.01 and Ethernet UDP/IP communication. Its Ethernet interface uses IEEE 802.3 networking with 10BASE-T and 100BASE-TX twisted-pair connections.
⚠️ The 3500/91 is a legacy product and has been superseded by the 3500/91M EGD Communication Gateway. When replacing an existing module, verify firmware, I/O module type, rack configuration, and communication requirements.
Product Datasheet
🔹 Model: 3500/91
🔹 Brand: BENTLY NEVADA
🔹 Series: 3500 Machinery Protection System
🔹 Product Type: EGD Communication Gateway Module
🔹 Main Function: Rack Data Communication / Gateway
🔹 Supported Protocol: EGD Version 2.01
🔹 Network Protocol: Ethernet UDP/IP
🔹 Ethernet Standard: IEEE 802.3
🔹 Ethernet Interface: 10BASE-T / 100BASE-TX
🔹 Rack Position: One Full-Height Front Slot
🔹 I/O Position: One Full-Height Rear Slot
🔹 Operating Temperature: -30 to +65°C
🔹 Dimensions: Approx. 241.3 × 24.4 × 99.1 mm*
🔹 Weight: Approx. 0.39 kg*
🔹 Power Supply: 3500 Rack Backplane Supply
🔹 Country of Origin: USA*
*Dimensions and weight can vary by configuration and packaging. The communication and rack specifications above are based on Bently Nevada documentation.
Typical Applications
🌐 3500 machinery monitoring networks
⚡ Turbine monitoring and protection
🏭 Industrial rotating equipment
🛢️ Oil and gas machinery monitoring
🔄 EGD-compatible controller integration
🛠️ Bently Nevada 3500 system maintenance
Installation & Use
🛠️ Before installation, verify the 3500/91 hardware configuration, EGD network requirements, compatible I/O module, rack firmware, and controller communication settings.
🔌 Install the gateway in the designated 3500 rack position and connect the appropriate Ethernet interface. Check the rack power supply and communication cabling before startup.
📊 After power-up, verify module status, Ethernet communication, EGD data exchange, and availability of monitored rack values in the connected controller.
⚠️ For replacement applications, compare the existing 3500/91 configuration with the replacement unit before commissioning. Complete communication and data-validation tests before returning the machinery monitoring system to normal operation.



