GE ACC-5595-208

Description

Introduction to the GE ACC-5595-208

Product Description

The GE ACC-5595-208 is a specialized I/O communication module from GE’s industrial automation platform, commonly associated with their PACSystems (RX3i) or earlier Series 90-70 PLC families. This module functions as a Genius Bus Controller (GBC), enabling the PLC to act as the master on a GE Genius® distributed I/O network. The GE ACC-5595-208 provides the hardware interface and protocol management to communicate with a wide array of Genius I/O blocks, which are distributed, intelligent remote I/O stations. This specific variant, indicated by the “-208” suffix, often denotes a particular hardware revision, packaging, or region-specific certification. By integrating the ACC-5595-208, a GE PLC can efficiently manage and exchange data with numerous remote I/O points spread across a plant floor, reducing wiring complexity and increasing system flexibility.

Product Parameters

• Product Series: GE Genius Bus Controller / GE PLC Communication Module

• Model: ACC-5595-208

• Device Type: Genius Bus Controller (GBC) Module

• Bus Protocol: Implements the GE Genius® (Global Data Highway) serial communication protocol.

• Network Topology: Supports a daisy-chain network topology for connecting multiple Genius I/O blocks.

• Communication Speed: Operates at the standard Genius bus data rate (e.g., 153.6 kbaud).

• Connector: Typically uses a 9-pin D-sub connector for the Genius bus trunk cable.

• Compatibility: Designed for specific PLC racks (e.g., RX3i, Series 90-70) and requires a compatible backplane and power supply.

• I/O Capacity: Capable of controlling a large number of Genius I/O blocks, each providing multiple discrete or analog points.

• Diagnostics: Provides status LEDs for module health and network communication.

Advantages and Features

The primary advantage of the GE ACC-5595-208 is its ability to seamlessly integrate the robust and proven Genius distributed I/O system into a GE PLC-based control architecture. It simplifies wiring by allowing I/O points to be located close to field devices, connected via a single twisted-pair trunk cable. The Genius protocol includes extensive diagnostic capabilities at the block level, enabling quick identification of field device faults. The module offers reliable, deterministic communication suitable for industrial environments. Using the ACC-5595-208 leverages the extensive installed base and availability of Genius I/O blocks for system expansion or modernization.

Application Cases in Industry

This bus controller module is used in a wide range of industries where GE PLCs are deployed with distributed I/O. In factory automation, the GE ACC-5595-208 connects to Genius I/O blocks controlling machine cells, conveyor sections, and robotic workstations. Within automotive manufacturing, it manages I/O distributed across large assembly and welding lines. In material handling facilities like warehouses and airports, it controls dispersed I/O for sortation systems and baggage handling. It is also common in water treatment plants for controlling remote pump stations and valve skids.

Comparison with Competing Products

Competing products include other distributed I/O network interface modules, such as Profibus-DP masters (for Siemens) or Remote I/O scanners (for Allen-Bradley). The GE ACC-5595-208 is specific to the proprietary Genius ecosystem. Compared to open fieldbus systems, the Genius system offers a tightly integrated, vendor-specific solution with well-defined performance and diagnostics. Its main advantage is within existing GE-centric installations, where it provides a reliable and familiar method for I/O expansion. Newer systems might opt for Ethernet-based I/O (like GE’s PROFINET or EtherNet/IP modules), but the ACC-5595-208 remains vital for maintaining and extending legacy Genius networks.

Selection Suggestions and Precautions

Selecting the GE ACC-5595-208 requires confirming its compatibility with the specific PLC CPU model and rack type (e.g., RX3i Universal Backplane). It is crucial to plan the Genius network layout, including the total number of I/O blocks, cable length, and power requirements for the bus. The module must be correctly configured in the PLC hardware configuration (using software like Machine Edition) with the correct rack and slot assignment. Ensure the Genius bus is properly terminated at both ends.

Precautions:

• Installation should follow GE’s guidelines for module insertion and Genius network wiring.

• The Genius bus cable must be a shielded, twisted-pair cable installed with proper separation from power cables to avoid noise.

• Network termination resistors must be correctly installed at the first and last device on the bus to ensure signal integrity.

• Each Genius I/O block on the network must have a unique address set via its rotary switches; duplicate addresses will cause communication failure.

• When adding or removing blocks on a live system, follow proper procedures to avoid disrupting communication to other blocks.

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