802273-14R RELIANCE

Reliance 802273-14R Analog Input Module

Brand：RELIANCE Model number：802273-14R

Country of origin: United States Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

Reliance Analog Input Modules were designed to convert continuous analog signals (like voltage or current) from various field devices into digital values that a Programmable Logic Controller (PLC) or other control system could process. This allowed the control system to accurately monitor real-world process variables such as temperature, pressure, flow, level, and position.

Product Details

Function:

The primary function is Analog-to-Digital (A/D) conversion. They take an analog voltage or current signal and convert it into a digital number that the PLC's processor can use for control logic, display, or data logging.
They typically include circuitry for signal conditioning, such as filtering, to reduce noise and provide a stable measurement.
Some modules offered features like programmable input ranges, allowing them to adapt to different sensor types and signal levels.

Design:

Often designed as circuit board assemblies that plug into a backplane of a PLC rack (e.g., AutoMax or DCS 5000 systems).
They feature terminal blocks for connecting the analog input devices (sensors).
LED indicators are commonly present on the faceplate to show module status or input activity.

Product Parameters (Typical, can vary by specific model)

Input Channels:

Commonly 2, 4, 8, or 16 channels per module.

Input Voltage Ranges:

±1V, ±5V, ±10V, ±20V
0-5V, 0-10V
Typically support various voltage ranges such as:
(Note: Maximum input rating might be higher for protection, e.g., ±15VDC).

Current Input Ranges:

Most commonly 4-20 mA (milliamperes), but sometimes 0-20mA.

Resolution:

Commonly 12-bit plus sign, 12-bit, or 8-bit, indicating the precision of the A/D conversion. Higher bits mean finer resolution.

Conversion Rate/Update Period:

The speed at which the analog signal is converted to digital, often in microseconds (µs) or milliseconds (ms). For example, as fast as once every 500 microseconds.

Input Impedance:

For voltage inputs, typically high (e.g., 10M ohm minimum). For current inputs, typically low.

Overrange Capability:

Ability to handle input signals slightly above the nominal range (e.g., 100% overrange).

Isolation:

Often provides electrical isolation between input channels and/or between field wiring and the logic common to protect the control system from electrical noise and ground loops.

Power Dissipation:

Maximum power consumed by the module (e.g., 6 Watts, 25 Watts).

Operating Temperature:

Typical industrial range, e.g., 0°C to 55°C or -20°C to 70°C.

Humidity:

Typically 5-95% non-condensing.

Product Advantages (Historically speaking for Reliance modules)

Reliability & Robustness: Reliance modules were built for demanding industrial environments, designed for long-term reliable operation.
Precision Measurement: High resolution and accurate A/D conversion capabilities allowed for precise monitoring of process variables.
Flexibility: Programmable input ranges and filtering options provided adaptability to various sensor types and applications.
Integration: Designed to integrate seamlessly with Reliance's PLC systems (like AutoMax and DCS 5000).
Diagnostics: Often included built-in diagnostics and on-board status LEDs for easier troubleshooting.

Important Considerations

Obsolete Status: Reliance Electric products are generally considered obsolete, meaning they are no longer manufactured. This can impact availability, spare parts, and direct manufacturer support.
Compatibility: Ensure compatibility with your existing Reliance PLC system. Specific module part numbers are designed for particular PLC series.
Signal Type Matching: Always match the analog input module type (voltage, current, thermocouple, etc.) and range to the sensor output being used.
Wiring Practices: Proper shielding and grounding of analog signals are crucial to minimize noise and ensure accurate readings. Refer to the module's wiring manual (e.g., Reliance manual J-3637 for the 57C409).
Calibration: Analog modules may require calibration to ensure accuracy over time.
Software Configuration: The module needs to be correctly configured in the PLC programming software, including setting input ranges, filters, and conversion rates.

Product Applications (Typical historical applications)

Reliance Analog Input Modules were used in a wide array of industrial automation and control applications where continuous measurement was required:

Process Control:

Monitoring temperature in ovens, furnaces, and chemical reactors.
Measuring pressure in pipelines, tanks, and pneumatic systems.
Controlling flow rates in fluid systems.
Monitoring liquid levels in storage tanks.

Machine Control:

Position sensing for servo or stepper motor control.
Monitoring motor current or voltage in drive systems.
Feedback for closed-loop control systems.

Building Management Systems:

HVAC control (monitoring temperature, humidity, air pressure).
Energy management (monitoring power consumption).

Manufacturing:

Quality control applications where precise measurements are critical.
Weight measurement on conveyor belts.

45C982 RELIANCE

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