DDS-SABS5 RELIANCE

Reliance DDS-SABS5 Analog Output Modules

Brand：RELIANCE Model number：DDS-SABS5

Country of origin: United States Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

A Reliance Analog Output Module (such as the 57C410 for the AutoMax PLC series) takes a digital value from a PLC or control system's processor and converts it into a continuous analog signal, typically a voltage or current, which is then sent to a field device. This enables the control system to precisely manipulate process variables like speed, flow, temperature, or position.

Functionality: The core function of an analog output module is Digital-to-Analog Conversion (DAC). The PLC sends a digital number representing a desired output level (e.g., a number from 0 to 4095 for a 12-bit module). The analog output module then converts this digital number into a corresponding analog signal (e.g., 0-10V or 4-20mA). This signal is then used to drive devices that accept variable inputs.
Signal Types:

Voltage Output: Common ranges include 0-5V, 0-10V, +/-5V, +/-10V. These are often used for controlling variable frequency drives (VFDs), servo drives, or other voltage-controlled devices.
Current Output: The most common is 4-20mA, a robust standard for industrial control due to its immunity to noise and ability to transmit over long distances without significant signal degradation (the "live zero" of 4mA also helps detect wire breaks). Other current ranges like 0-20mA may also be available. These are widely used for proportional valves, heating elements, and process controllers.

Key Features:

High Resolution: Typically 12-bit or 16-bit resolution, determining the granularity and precision of the output signal. A 12-bit resolution, for example, allows for 4096 distinct output levels.
Galvanic Isolation: Essential for protecting the sensitive control system electronics from voltage spikes, ground loops, and electrical noise from the field devices. Often provides channel-to-channel isolation and logic-to-channel isolation.
Multiple Channels: Modules usually offer multiple independent output channels (e.g., 2 or 4 channels per module).
Selectable Output Ranges: Many modules allow users to configure the output range (e.g., selecting between 0-5V, 0-10V, or 4-20mA) via hardware jumpers or software settings.
Diagnostic Indicators: LEDs for power and individual channel status.
Short-Circuit Protection: Built-in protection to safeguard the module and connected devices from damage in case of wiring faults.
Low-Pass Filtering: Often includes output filters (e.g., 100Hz low-pass) to smooth the analog signal and reduce noise.

Product Parameters

Specific parameters for Reliance Analog Output Modules would include:

Number of Channels: E.g., 2 channels, 4 channels.
Output Signal Types: E.g., Voltage (0-5V, +/-5V, 0-10V, +/-10V), Current (0-20mA, 4-20mA).
Resolution: E.g., 12-bit, 16-bit.
Accuracy: Typically expressed as a percentage of full scale (e.g., +/- 0.1% F.S.).
Output Load Resistance (for current outputs): The maximum resistance the module can drive (e.g., 500 ohms for 4-20mA).
Update Rate/Conversion Speed: How quickly the module can update its output (e.g., often in milliseconds).
Isolation Voltage: The electrical isolation capability (e.g., 2500 VAC RMS).
Power Consumption: The electrical power required by the module.
Operating Temperature Range: Standard industrial temperatures.
Mounting: Typically plugs into a backplane or mounts on a DIN rail within the PLC system.

Product Advantages

Precision Control: Enables very fine and accurate control of industrial processes, leading to improved product quality and efficiency.
Robustness: Designed for continuous and reliable operation in challenging industrial environments, ensuring long service life and minimizing downtime.
Flexibility: Supports multiple output ranges and signal types, allowing for diverse applications with various analog input devices.
Electrical Isolation: Critical for protecting the PLC and sensitive control electronics from voltage spikes, ground loops, and noise in the field wiring.
Enhanced Diagnostics: Provides status indicators and sometimes software diagnostics for easier troubleshooting and reduced maintenance time.
Integration: Designed to seamlessly integrate with Reliance Electric's PLC platforms like AutoMax or DCS 5000 systems.

Important Considerations

Signal Matching: Ensure that the analog output range and type from the module precisely match the required input range of the field device (e.g., a VFD input, proportional valve, or analog meter). Mismatches can lead to inaccurate control or damage.
Wiring Practices: Proper shielded cabling, grounding, and wiring techniques are crucial for maintaining signal integrity, especially for low-level analog signals, and preventing electromagnetic interference (EMI).
Load Requirements: Verify that the connected load falls within the module's specified current or voltage output capabilities. Exceeding these limits can damage the module.
Calibration: Analog output modules may require periodic calibration to maintain accuracy over time. Refer to the specific module's manual for calibration procedures.
Resolution vs. Accuracy: Understand the difference. High resolution means more steps, but accuracy refers to how close the output is to the true value. Both are important for precise control.
Legacy Support and Spares: Since Reliance Electric is now integrated into larger companies, sourcing new modules might be challenging. Consider the availability of spare parts and strategies for potential upgrades or replacements in older systems.

803430-8S RELIANCE

We have the same series of models in stock. If you don't find the model you need, please contact us and we will provide you with an official quotation！