Product Overview
The Reliance 57C554 is a Remote I/O Interface Module designed for the Reliance Electric AutoMax PLC system, specifically for connecting a Shark remote rack to the AutoMax Remote I/O Network. This module acts as an interface, utilizing an onboard microprocessor to handle basic buffer circuitry and timing for communication with the Shark remote rack’s backplane. The 57C554 facilitates the exchange of data between the AutoMax controller and the remote I/O points in the Shark rack, enabling distributed control and monitoring capabilities within the AutoMax system. Originally manufactured by Reliance Electric, this module may have also been part of the product lines of ABB and Baldor Reliance at different times. The 57C554 is a crucial component for expanding the I/O capacity and geographical distribution of a Reliance AutoMax control system.
Technical Specifications
Based on available information:
- Manufacturer: Reliance Electric (potentially also ABB or Baldor Reliance at different times)
- Series: AutoMax PLC
- Product Type: Remote I/O Interface Module (Shark Interface Module)
- Part Number: 57C554 (also known as 0-57554 or 57554)
- Compatibility: Reliance Electric AutoMax PLC system, Shark Remote I/O Rack
- Interface: Connects the AutoMax Remote I/O Network to the Shark remote rack’s backplane.
- Onboard Processor: Includes a built-in microprocessor for buffer circuitry and timing.
- Power Supply (Logic Circuitry): +5 VDC (provided by the rack it is attached to)
- Power Supply (I/O Network): +24 VDC (regulated at +12 VDC, mounted on the rack)
- Status Indicators: Two green LEDs labeled “CPU OK” and “COM OK”.
- Drop Number Dial: A 16-position rotary switch for selecting the Shark rack’s Remote I/O drop number.
- Network Port: Female RS-232 9-Pin D-shell serial connection port labeled “NETWORK”.
- Weight: Approximately 0.50 lbs.
- Instruction Manual: J-3606 (AutoMax Remote I/O Communications Manual)
Main Features and Advantages
- Remote I/O Expansion: Enables the AutoMax PLC system to interface with and control I/O points located in a remote Shark rack.
- Distributed Control: Allows for the physical distribution of I/O modules closer to the controlled devices, reducing wiring complexity and installation costs.
- Microprocessor-Based Interface: The onboard microprocessor handles essential communication tasks, simplifying the interface between the AutoMax network and the Shark rack.
- Status Indication: The “CPU OK” and “COM OK” LEDs provide visual feedback on the module’s operational status and communication link.
- Configurable Drop Number: The rotary switch allows for easy addressing of the remote I/O rack on the network.
- Serial Communication Port: The RS-232 port likely facilitates communication with the AutoMax Remote I/O Network.
Application Field
The Reliance 57C554 Remote I/O Interface Module is used in industrial automation applications where a Reliance Electric AutoMax PLC system needs to control and monitor input and output devices located remotely from the main controller. This is common in:
- Manufacturing Plants: Controlling machinery and processes distributed across a large facility.
- Process Control Systems: Managing I/O points in chemical plants, refineries, and other process industries.
- Material Handling Systems: Interfacing with remote sensors and actuators in automated warehouses and conveyor systems.
Related Products
- Reliance Electric AutoMax PLC System: The primary control platform that the 57C554 module is designed to work with.
- Reliance Electric Shark Remote I/O Rack: The remote I/O chassis that the 57C554 interfaces with.
- Other AutoMax I/O Modules: A variety of local and remote I/O modules for the AutoMax system.
- AutoMax Communication Modules: Modules for various communication protocols used by the AutoMax system.







