Description

The General Electric IC694BEM331 is a Genius Bus Controller module designed for the PACSystems RX3i control platform. This module functions as a bus master, enabling seamless communication between the RX3i controller and Genius I/O devices. It supports high-speed data exchange, including Global Data and Datagrams, ensuring reliable performance in distributed control architectures.

Features

• Supports Genius communication protocol for robust distributed I/O management.
• Configurable baud rates including 153.5K (standard/extended), 76.8K, and 38.4K baud.
• Supports up to 32 devices on the bus at higher baud rates and 16 devices at 38.4K baud.
• Flexible bus termination options (75, 100, 120, or 150 Ohm) to match various cabling requirements.
• Compatible with twisted-pair, Twinax, and fiber optic media via external modems.
• Provides 1500V transient common mode rejection and 2000V Hi-Pot isolation for electrical protection.

Technical Specifications

Installation Guidelines

• Ensure the RX3i power supply is disconnected before inserting or removing the module from the backplane.
• The module should be installed in a standard RX3i rack; ensure proper seating and secure the module using the integrated latching mechanism.
• Use shielded twisted-pair or Twinax cable for the Genius bus; ensure the shield is properly grounded at the designated points to minimize EMI.
• Maintain proper bus termination at both ends of the cable segment using the specified resistor values to prevent signal reflections.
• Avoid routing communication cables in close proximity to high-voltage power lines or heavy inductive loads.
• Ensure adequate ventilation within the enclosure to maintain operating temperatures within the specified limits for the RX3i system.

FAQ

What is the primary function of the IC694BEM331?

This module acts as a Genius Bus Controller (master) for the PACSystems RX3i system, allowing the controller to communicate with and manage remote Genius I/O blocks and devices.

Can this module be used with fiber optic cables?

Yes, the module supports fiber optic media when used in conjunction with appropriate Genius fiber optic modems.

How many devices can be connected to the bus?

The module supports up to 32 devices at baud rates of 76.8K and 153.5K, and up to 16 devices when operating at 38.4K baud.