0-49026-23 RELIANCE

Reliance 0-49026-23 Processor module

Brand：RELIANCE Model number：0-49026-23

Country of origin: United States Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

A Reliance Processor Module serves as the central processing unit (CPU) of a PLC or DCS. It contains the microprocessor, memory, and communication interfaces necessary to execute control logic, monitor inputs, update outputs, and communicate with other devices and systems.

Core Function: The primary function of the processor module is to run the user-defined control program (often written in ladder logic, but also BASIC or other languages for AutoMax systems). It scans inputs, processes the logic, and updates outputs in a continuous, deterministic cycle.
Architecture: These modules typically sit within a rack or chassis, communicating with power supplies and I/O modules via a backplane or internal bus. Some older models might integrate the power supply directly.
Memory: Processor modules include various types of memory:

Program Memory: Stores the control application logic.
Data Memory: Stores variable values, timers, counters, and other data used by the program.
System Memory: Stores the operating system (firmware) of the processor.
Many Reliance Electric processors, like the AutoMate series, featured non-volatile memory, meaning they retained the program and data even after power loss without requiring batteries, which was a significant advantage.

Communication Interfaces: Processor modules typically include ports for programming devices (e.g., RS-232) and for industrial networks (e.g., Reliance's proprietary R-NET, or later standard protocols like Ethernet/IP via communication cards). These enable data exchange with HMIs, SCADA systems, other PLCs, and intelligent devices.
Diagnostics: Most processor modules feature LED indicators for status (e.g., Run, Stop, Fault, Communication OK) and can provide detailed diagnostic information accessible through programming software.

Product Parameters

Specific parameters depend heavily on the model and series (e.g., AutoMate 15, 20, 30, 40, AutoMax series). Key parameters include:

Processor Type: The specific microprocessor used (e.g., Intel 801, Motorola 68000 for more advanced models).
Program Memory Size: The amount of memory available for user programs, often expressed in K x 16 words (e.g., 1K, 2K, 8K, 104K).
I/O Capacity: The maximum number of digital and/or analog I/O points the processor can manage directly or via remote I/O systems.
Scan Time/Execution Speed: How quickly the processor can execute the control program, often measured in milliseconds per K of ladder logic elements. Faster scan times allow for more responsive control.
Communication Ports/Protocols: Type and number of serial ports (e.g., RS-232, RS-485), and support for network protocols (e.g., R-NET, Ethernet via dedicated cards).
Operating Voltage: The power supply voltage required (e.g., 24V DC, 120/240V AC).
Operating Temperature Range: Industrial standard ranges, typically -20°C to 60°C.
Mounting: Usually designed to plug into a specific backplane or rack system.

Product Advantages

Robustness and Reliability: Reliance Electric processor modules were built for demanding industrial environments, ensuring long-term stable operation and minimizing downtime.
Deterministic Control: PLCs provide deterministic control, meaning scan times are predictable, which is critical for real-time industrial processes.
Non-Volatile Memory: Many models featured non-volatile memory, eliminating the need for battery backups for program retention, reducing maintenance and risk of data loss.
Processing Power: More advanced AutoMax processors offered significant processing capabilities for complex control logic, including advanced math, data manipulation, and inter-processor communication.
Integration with Reliance Ecosystem: Designed to seamlessly integrate with Reliance Electric's I/O modules, drives, and other automation components.
Diagnostic Features: Built-in diagnostics and status indicators aid in quick troubleshooting and maintenance.

Important Considerations

Legacy Status: Many Reliance Electric PLC product lines (like AutoMate and AutoMax) are considered legacy systems. While they are still functional, ongoing support, availability of new modules, and modern programming software compatibility can be challenges. Spares are typically sourced from third-party industrial automation suppliers.
Programming Software: Access to original programming software and compatible operating systems (which might be older Windows versions or DOS-based) can be crucial for maintenance or modification.
System Knowledge: Maintaining these older systems often requires specialized knowledge and experience with Reliance Electric's proprietary programming languages and protocols.
Upgrade Path: For new projects or significant expansions, considering an upgrade to a modern PLC platform from current manufacturers (like ABB, Rockwell Automation, Siemens) might be more cost-effective in the long run due to improved capabilities, support, and modern connectivity.
Environmental Compatibility: Ensure the module is installed in an environment that meets its temperature, humidity, and vibration specifications.
Power Requirements: Verify that the system's power supply can adequately power the processor module and all connected I/O.
Safety Protocols: Always follow strict safety procedures when working with industrial control systems, especially when installing, troubleshooting, or replacing modules, as unexpected machine motion can occur.

Product Applications

Reliance Electric processor modules were, and in many cases still are, employed in a wide array of industrial automation and control applications:

Discrete Manufacturing:

Machine control for assembly lines, packaging machines, and material handling systems (e.g., conveyors, robotic cells).
Controlling stamping presses, injection molding machines, and other repetitive manufacturing processes.

Process Control:

Automation of continuous processes in industries such as chemicals, oil and gas, food and beverage, and pharmaceuticals.
PID control loops for temperature, pressure, and flow regulation.

Motion Control:

Coordinating multi-axis motion in specialized machinery, particularly when integrated with Reliance Electric drives.
Controlling servo and stepper motor systems.

Power and Utilities:

Supervising and controlling generators, switchgear, and protective relays in power plants and substations.
Water and wastewater treatment plant automation.

Infrastructure:

Control of traffic management systems, pumping stations, and environmental monitoring.

0-49008-1 RELIANCE

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