The Bently Nevada 3500/91M EGD Communication Gateway Module provides comprehensive communication capabilities for 3500 Series machinery protection systems. It enables the transfer of 3500 rack-monitored values and status information over an Ethernet network, with response times suitable for controller applications . This gateway is specifically designed for seamless integration with EGD (Ethernet Global Data) protocol compatible controllers, such as the GE Mark VIe control systems .

The module supports EGD protocol version 2.01 over Ethernet UDP/IP, allowing for high-speed data exchange. It is designed for reliable operation in industrial environments, with an operating temperature range of -30 to 65°C (-22 to 150°F) . In terms of rack configuration, the main module occupies one full-height front slot in the 3500 rack, with corresponding I/O modules requiring one full-height rear slot .

By providing this direct Ethernet data path, the 3500/91M eliminates the need for intermediate protocol converters, simplifying system architecture and improving data integrity. It allows critical machine condition data from the 3500 monitoring system to be directly utilized by control systems for advanced machine control, performance optimization, and integrated alarm management.