The Bently Nevada 3500/90 (125728-01) is a high-performance Communication Gateway Module designed to bridge the 3500 Machinery Protection System with external plant-wide networks. It serves as a digital translator, converting internal rack data into industry-standard protocols such as Modbus RTU (Serial) and Modbus TCP/IP (Ethernet). By providing real-time access to vibration levels, temperatures, and alarm statuses, the 3500/90 allows Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC) to incorporate critical machinery health data into broader automation strategies. The module features a read-only architecture to ensure that external network activity cannot inadvertently alter local machinery protection settings.
| Parameter | Specification Details |
| Model Number | 3500/90 (125728-01) |
| Protocols Supported | Modbus RTU (RS-232/422/485) and Modbus TCP/IP |
| Serial Interfaces | 2 x Configurable Serial Ports |
| Ethernet Interface | 1 x 10/100 Mbps RJ45 Port |
| Baud Rate Range | 1200 to 115.2 kbps |
| Data Types | Static Values, Alarms, Events, System Status, Configuration |
| Security Features | Read-Only Access, Front-panel DIP Switches for Addressing |
| System Reset | Front-panel switch for clearing latched alarms |
| Power Consumption | Provided via 3500 Rack Backplane |
| Operating Temp | -30 °C to +65 °C (-22 °F to +149 °F) |
| Dimensions | 24.1 cm x 3.8 cm x 24.1 cm |
| Weight | 0.5 kg (Shipping Weight 2.0 kg) |
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