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- ABB
- DSAI146
- Analog Input Control Unit
- Sweden
- 100 × 70 × 20 mm
- 0.4kg
- 3BSE007949R1
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The DSAI146 (3BSE007949R1) is a high‑performance analog input module designed for industrial automation and control systems. Its primary role is to acquire multiple analog signals (such as temperature sensors, RTDs, voltage or current loops) and convert them into digital data for a control system. It is built for durability in demanding environments and integrates seamlessly into modular I/O architectures.
This module supports multi‑channel analog input, offers configurable signal types, and is engineered for excellent noise immunity and reliability. It is intended for use in industries such as power generation, chemical processing, water and wastewater management, and heavy‑duty manufacturing. The DSAI146 provides a cost‑effective way to centralize analog signal acquisition, reduce hardware diversity, and simplify maintenance.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | DSAI146 (3BSE007949R1) |
| Product Type | Analog Input Module |
| Number of Channels | 8 isolated analog input channels (typical) |
| Supported Signal Types | 4‑20 mA, 0‑10 V, thermocouples (J/K/T/E etc), RTD (Pt100) |
| Isolation | 500 V rms (channel‑to‑earth) |
| Resolution / Accuracy | 16‑bit resolution; typical accuracy ~0.1% full scale |
| Power Supply | 24 V DC via backplane |
| Operating Temperature | –20 °C to +55 °C |
| Storage Temperature | –40 °C to +70 °C |
| Humidity | 5% to 95% non‑condensing |
| Mounting | DIN rail or rack module card, plug‑in type |
| Dimensions (L × W × H) | Approx. 100 × 70 × 20 mm |
| Weight | Approx. 0.4 kg |
| Compatible Systems | Modular I/O rack systems in process control platforms |
| Additional Features | Diagnostics: open‑circuit detection, signal out‑of‑range alerts, noise filtering |
Product Description
The DSAI146 module is designed to capture a wide array of analog signals from field devices—such as flow transmitter current loops, voltage outputs from sensors, RTD temperature probes, or thermocouple inputs—and convert them into digital values that the control system can process. Its multi‑channel format enables consolidation of signal acquisition, reducing the need for separate modules per sensor type.
Built for industrial use, the module includes galvanic isolation to protect against ground loops, and advanced filtering to mitigate interference from motors, drives, and high‑voltage equipment. Maintenance is simplified by plug‑in format, diagnostic LEDs, and automated fault reporting. In a real‑world plant scenario, the DSAI146 allows plant engineers to monitor critical parameters (like boiler temperature, reactor feed levels, or turbine vibration) from a single module rack, increasing efficiency and reducing cost.
Product Applications
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Monitoring and control of temperature sensors (RTD/thermocouple) in power generation or heavy process plants.
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Acquisition of 4‑20 mA or 0‑10 V signals from flow meters, level sensors, pressure transducers in chemical or petrochemical plants.
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Water & wastewater treatment systems requiring reliable analog input modules in harsh environments.
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Retrofit/upgrading of modular I/O systems where replacement of older analog modules with a universal input board is needed.
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Machine and process automation where multiple analog signals must be collected and consolidated into the control system rack.
Product Advantages
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Universal input formats: Supports current, voltage, RTD and thermocouple signals in one module.
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High signal accuracy: Enables precise measurement and high‑quality control.
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Strong noise immunity and isolation: Designed for industrial conditions with motors and drives.
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Compact modular design: Saves rack space and simplifies installation.
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Plug‑in replacement: Allows fast servicing and minimal downtime.
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Diagnostics built‑in: Alerts on channel faults, open circuits, or signal deviations.
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Reduced hardware variety: One module replaces many dedicated devices, lowering inventory and simplifying logistics.
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Durable build: Designed for long service life under continuous industrial use.
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Broad compatibility: Works within modular I/O systems and scalable control architectures.
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Cost‑efficient: Consolidation of multiple signal types into one module reduces system cost.
Brand and Series
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Brand: ABB
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Series: Modular Analog Input Modules for process control I/O systems (e.g., S800 I/O series or comparable modular input families).
Recommended Related or Same‑Series Models
| Model | Product Type | Main Function | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| DSAI130A | Analog Input Module | 16‑channel analog input variant | ~100×70×20 | ~0.26 |
| DSAI133A | Analog Input Module | Enhanced universals with extra signal types | ~100×70×20 | ~0.30 |
| DSAO120 | Analog Output Module | Analog output complement for DSAI146 | ~100×70×20 | ~0.25 |
| DSDI146 | Digital Input Module | Digital inputs counterpart in same modular family | ~100×70×20 | ~0.22 |
| DSDO146 | Digital Output Module | Digital output module in the same series | ~100×70×20 | ~0.24 |
Recommended Popular Models from the Same Brand
| Model | Product Type | Application | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| ACS580‑01‑046A‑4 | AC Drive | Variable speed motor control | 370×203×200 | 8.2 |
| DCS800‑S02‑0050‑05 | DC Drive | Heavy‑duty DC motor control | 425×270×190 | 12.5 |
| ACS880‑01‑145A‑3 | Industrial Drive | Precision torque / motion control | 540×270×245 | 15.0 |
| ACS355‑03E‑07A3‑4 | Compact Drive | Automation & light industry | 125×70×130 | 1.2 |
| ACS150‑03E‑02A4‑4 | Micro Drive | Small machine & fan control | 98×70×120 | 1.0 |
FAQ (Frequently Asked Questions)
Q1: What types of sensor signals can the DSAI146 handle?
A1: It can accept 4‑20 mA current loops, 0‑10 V voltage signals, RTDs (Pt100 etc), and thermocouple inputs.
Q2: How many channels are in the module?
A2: Typically 8 isolated analog input channels.
Q3: What is the accuracy and resolution of the inputs?
A3: It provides 16‑bit resolution and typical accuracy around 0.1% full scale.
Q4: What are the dimensions and weight of the module?
A4: Approx. 100 × 70 × 20 mm and weight around 0.4 kg.
Q5: Can the module be replaced while the system is running?
A5: While it is plug‑in modular, replacement should follow the standard maintenance procedure, including powering down or using hot‑swap capability if the system supports it.
Q6: What industrial conditions can the module withstand?
A6: It is rated for –20 °C to +55 °C operation, –40 °C to +70 °C storage, and 5% to 95% non‑condensing humidity.
Q7: What diagnostic features are included?
A7: Channel fault detection, open circuit monitoring, signal out‑of‑range alerts and front‑panel LED indicators.
Q8: Why is universal input capability beneficial?
A8: Because it allows one module to handle multiple sensor types, reduces hardware diversity and simplifies maintenance and inventory.
Q9: In what types of systems is this module typically used?
A9: Modular rack I/O systems in process control, automation plants, power generation, chemical plants and water treatment facilities.
Q10: What are the maintenance considerations?
A10: Ensure cable terminations are tight, observe diagnostics regularly, clean dust from module, verify ambient conditions and replace module if LEDs indicate fault.
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All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
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We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
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24-hour after-sales service guarantee team, professional and standardized management service system.