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Product Model: ABB SD823
Part Number: 3BSC610039R1
Brand: ABB
Series: SD Digital Signal Conditioning & Processor Modules
Product Type: Digital Signal Conditioner / Converter
Category: Industrial Signal Processing and Measurement Interface
The ABB SD823 is a high‑precision digital signal conditioning and conversion unit designed to process analog field sensor data into reliable, digitally conditioned signals for industrial automation systems, programmable logic controllers (PLCs), distributed control systems (DCS), and data acquisition hardware.
The ABB SD823 3BSC610039R1 is an advanced digital signal conditioning module engineered for demanding industrial environments where accurate analog‑to‑digital conversion is essential. It accepts raw analog inputs from field sensors—such as current loops, voltage outputs, thermocouples, and resistance temperature detectors (RTDs)—and performs digital filtering, high‑resolution conversion, sensor linearization, and scaling. The conditioned digital signals are then provided in a format optimized for modern programmable controllers, supervisory systems, and data processing units.
With built‑in galvanic isolation between inputs and outputs, the SD823 ensures signal integrity even in electrically noisy environments. Digital filtering reduces interference and improves measurement stability, which is critical for accurate process control and monitoring. The module is designed for 24/7 continuous operation and fits into industrial control cabinets or racks using standard DIN‑rail or rack mount hardware. Its construction emphasizes reliability, precision, and compatibility with a broad range of industrial sensor types.
The SD823 integrates with industrial automation frameworks by delivering conditioned signals that enhance the performance and accuracy of control loops, data acquisition channels, and monitoring displays. Its digital signal processing capabilities make it suitable for applications requiring advanced measurement fidelity.
| Parameter | Specification |
|---|---|
| Model | SD823 |
| Part Number | 3BSC610039R1 |
| Series | SD Digital Signal Conditioning & Processor |
| Product Type | Digital Signal Conditioner / Converter |
| Supported Input Types | Voltage, Current, Thermocouple, RTD |
| Output Format | Digitally conditioned signals for PLC/DCS/DAQ |
| Conversion Method | High‑resolution digital A/D conversion |
| Input Impedance | High Input Impedance (dependent on configuration) |
| Output Interface | Digital outputs compatible with automation systems |
| Galvanic Isolation | Full isolation between input and output |
| Accuracy | ±0.1% of full scale (typical) |
| Response Time | < 100 ms |
| Supply Voltage | 24 V DC |
| Power Consumption | < 8 W |
| Operating Temperature Range | –10°C to +55°C |
| Storage Temperature Range | –20°C to +70°C |
| Relative Humidity | 5% to 95% non‑condensing |
| Protection Rating | IP20 |
| Mounting Type | DIN‑Rail or Rack Mount |
| Connection Method | Screw / Plug‑in Terminals |
| Dimensions (W × H × D) | 45 × 120 × 110 mm |
| Weight (kg) | Approx. 0.47 kg |
The SD823 digital signal conditioner is used widely in industrial automation and process control where analog sensor data must be accurately translated into reliable digital feedback for controllers and monitoring systems.
• Digital conditioning of thermocouple and RTD temperature measurements.
• Processing and digitizing analog signals from pressure, level, and flow transmitters.
• Front‑end signal conditioning for distributed control systems (DCS) and PLCs.
• High‑precision analog‑to‑digital conversion for data acquisition and historian systems.
• Noise‑filtered digital signal transmission in high‑interference industrial environments.
• Machine automation requiring stable analog feedback represented digitally.
• Environmental and infrastructure monitoring systems where precision is critical.
• Utility and power generation systems that require accurate digital sensor data.
In these scenarios, the SD823 enhances automation accuracy by ensuring field measurement data is clean, stable, and digitized before presenting it to digital controller hardware.
The SD823 leverages advanced digital signal processing techniques to produce highly accurate and stable conditioned outputs.
Multiple analog input types are supported, including current, voltage, thermocouple, and RTD signals.
Full electrical isolation between input and output channels prevents ground loop issues and improves overall noise immunity.
Outputs are digitized and formatted for seamless integration with PLCs, DCS, DAQ systems, and operator interfaces.
Internal digital processing allows configuration of filter settings and response times to suit specific application requirements.
Engineered for continuous operation in industrial environments with wide operational temperature and humidity tolerances.
DIN‑rail and rack mounting enable versatile system integration in control panels and automation cabinets.
Screw and plug‑in terminal connections simplify wiring and facilitate efficient maintenance.
Below are five related models in the SD series or other associated signal conditioning families.
| Model | Supported Inputs | Output Type | Supply Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| SD800 | Analog inputs | Digital conditioned output | 24 V DC | 45×120×110 | 0.40 kg |
| SD810 | Voltage/Current | Digital output | 24 V DC | 45×120×110 | 0.41 kg |
| SD812 | Voltage/Current/Thermocouple/RTD | Digital conditioned output | 24 V DC | 45×120×110 | 0.42 kg |
| SD821 | Voltage/Current/Thermocouple/RTD | Digital conditioned output | 24 V DC | 45×120×110 | 0.45 kg |
| SD823 | Voltage/Current/Thermocouple/RTD | Digital conditioned output | 24 V DC | 45×120×110 | 0.47 kg |
Here are five widely used industrial automation hardware modules that often work in conjunction with SD series signal conditioners:
| Model | Device Type | Supply Voltage | Dimensions (mm) | Weight (kg) | Application |
|---|---|---|---|---|---|
| AC800M | Modular Controller | 24 V DC | 140×180×120 | 1.2 kg | Core automation CPU |
| PM856 | Processor Module | 24 V DC | 120×150×90 | 0.9 kg | Logic control processor |
| CI870 | Communication Interface | 24 V DC | 120×150×90 | 0.8 kg | Fieldbus network interface |
| AI820 | Analog Input Module | 24 V DC | 120×150×80 | 0.6 kg | Multi‑channel analog acquisition |
| DI820 | Digital Input Module | 24 V DC | 120×150×80 | 0.6 kg | Digital signal capture |
Q1: What is the primary purpose of the SD823?
A: The SD823 is designed to condition, filter, scale, and digitize analog sensor signals for reliable digital use in automation systems.
Q2: What types of input signals does it support?
A: It supports current, voltage, thermocouple, and RTD analog inputs.
Q3: What kind of output does the SD823 provide?
A: It provides digitally conditioned outputs that are compatible with PLCs, distributed control systems, and data acquisition modules.
Q4: What is required for power supply?
A: The module operates on a standard 24 V DC industrial supply.
Q5: How much does the SD823 weigh?
A: The unit weighs approximately 0.47 kg.
Q6: What are the physical dimensions of the SD823?
A: The approximate dimensions are 45 × 120 × 110 mm.
Q7: Where is this product typically installed?
A: It is usually mounted on DIN rails or installed in automation racks inside control cabinets.
Q8: Why is galvanic isolation important in signal conditioning?
A: Galvanic isolation reduces noise and prevents ground loop interference, improving signal integrity and accuracy.
Q9: In what industries is the SD823 commonly used?
A: It is used in manufacturing, process automation, power utilities, chemical processing, and other industrial sectors requiring high‑precision signal conditioning.
Q10: Can the SD823 operate continuously in industrial environments?
A: Yes, it is built for stable, continuous operation under typical industrial temperature and humidity conditions.