Product Short Description
Product Name: AutoMax Remote I/O Communications Module
Product Introduction: A Remote I/O communications module for Reliance Electric AutoMax PLC and DCS 5000 systems. It serves as a master or slave interface on the proprietary AutoMax Remote I/O network, translating data between the high-speed backplane protocol and the synchronous serial network protocol used for distributed I/O.
Description
Technical Specifications:
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Manufacturer: Reliance Electric
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Type: Remote I/O Communications Module
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System compatibility: AutoMax PLC, DCS 5000
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I/O capacity: 32 input points, 32 output points (typical)
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Communication distance: Maximum 3000 ft (914 m)
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Communication speed: 845 k baud
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Supported I/O types: Digital input/output, analog input/output
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Dimensions: 178 mm × 76 mm × 25 mm
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Weight: 0.5 kg
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Operating temperature: 0 °C to +50 °C
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Storage temperature: −40 °C to +80 °C
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Relative humidity: ≤ 95% (non-condensing)
Functional Features:
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Acts as either master or slave on the AutoMax Remote I/O network.
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Enables distributed I/O over long distances while centralizing processing.
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Reduces home-run wiring by using a single serial link to remote drops.
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On-board diagnostics for troubleshooting and network reliability.
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Anti-interference design for industrial environments.
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Simple installation and configuration.
Application Scenarios: Large-scale industrial automation where field I/O is physically distributed—automobile assembly lines, robotic cells, conveyor systems, paper mills, pump and valve stations in continuous process plants.
Working Principle: The module converts the parallel backplane data from the AutoMax processor into a synchronous serial stream transmitted over the Remote I/O network at 845 k baud. It polls remote I/O drops, collects their input data, and dispatches output commands. As a master it initiates communication; as a slave it responds to a master module.
Installation Requirements:
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Insert into an AutoMax/DCS 5000 rack slot.
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Connect the Remote I/O network cable to the module’s network port.
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Terminate the network properly at both ends to avoid signal reflection.
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Ensure the total cable length does not exceed 3000 ft (914 m).
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Configure as master or slave per system architecture.
Usage Precautions:
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Respect the maximum communication distance and baud rate to maintain signal integrity.
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Properly terminate the network; unterminated lines cause communication errors.
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Protect the module from excessive vibration, humidity and temperature beyond the rated range.
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As a legacy product, verify compatibility with existing AutoMax firmware before replacement.
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