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Product Description

The 3500/93 (Part Number 135799-01) is a high-performance Display Interface Module (DIM) designed for the Bently Nevada 3500 Machinery Protection System. This module serves as the primary communications gateway between the internal rack modules and the external system displays. It is engineered to collect data from all monitors, relay modules, and Keyphasor* cards within the rack, formatting this information for real-time visualization. The 135799-01 is essential for providing operators with a centralized point of access to system event lists, alarm logs, and channel-specific status updates.

Built for versatility and industrial reliability, the 3500/93 supports multiple communication protocols, including RS422 and Modbus, ensuring seamless integration with third-party control systems and local HMIs. For installations requiring physical data presentation, the module can be face-mounted directly onto the 3500 rack or installed in a separate panel or 19-inch EIA rack for improved accessibility. This module is a critical component for achieving full API 670 compliance, providing the deterministic data link necessary for protecting high-speed turbines, compressors, and other essential rotating equipment in petrochemical and power generation facilities.

Technical Specifications

  • Model Number: 3500/93

  • Part Number: 135799-01

  • Manufacturer: Bently Nevada (Baker Hughes)

  • Module Type: Display Interface Module (DIM)

  • Communication Protocols: RS422, Modbus, Proprietary Bently Nevada

  • Data Refresh Content: System/Alarm Event Lists, Channel/Monitor Data, Keyphasor/Tachometer Data

  • Power Consumption: 15.5 Watts maximum

  • Mounting Slot: Slot 15 (Right-most slot) for face-mount configurations

  • External Mounting: Supports 19-inch EIA, Panel, and Independent mounting

  • Dimensions: 2.5 cm x 25.5 cm x 24.0 cm

  • Operating Temperature: -20 °C to +65 °C (-4 °F to +149 °F)

  • Weight: 0.8 kg (1.76 lbs)

  • API Compliance: Fully meets API 670 requirements for machinery protection

Module Comparison & Installation

While the 3500/94 module focuses on providing a high-resolution graphical VGA output for touch-screens, the 3500/93 is the standard interface choice for systems prioritizing protocol-based communication and alphanumeric data management. When installing the 135799-01 for face mounting, it is imperative that the module is placed in slot 15 of the 3500 rack. For systems requiring remote monitoring, the DIM provides the necessary signal stability to transmit data to operator consoles located away from the harsh vibration environment of the machine train.

Frequently Asked Questions

Can the 3500/93 be used to output data to a Modbus RTU network?Yes, the 135799-01 supports Modbus communication, allowing it to act as a bridge between the Bently Nevada 3500 rack and a plant-wide PLC or SCADA system for data logging and remote status monitoring.

Does this module require a separate I/O module?Yes, the 135799-01 monitor module must be paired with the appropriate Display Interface I/O module (typically installed at the rear of the rack) to facilitate physical cable connections for RS422 or other serial links.

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