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- ABB
- SDCS-IOB-23
- Terminal Board Digital Connection Board
- Sweden
- 190 mm × 125 mm × 40 mm
- 0.74kg
- 3ADT220090R0023
- Xiamen, China
- New & In Stock
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Product Overview
The ABB SDCS‑IOB‑23 is a digital input/output interface board designed as part of ABB’s DCS (Drive Control System) modular architecture. It provides carefully isolated I/O channels for 230 V AC field signals, offering reliable communication between field devices and the drive control logic.
The SDCS‑IOB‑23 is optimized to handle industrial‑strength environments where high voltage digital signals must be integrated with the drive’s control system while maintaining galvanic isolation and filtering to preserve signal integrity. Its design supports seamless integration into the ABB DCS family and helps reduce system downtime and complexity on harsh industrial sites.
Product Parameters
| Parameter | Description |
|---|---|
| Model | SDCS‑IOB‑23 |
| Part Number | 3ADT220090R0023 |
| Product Type | Input/Output Interface Board (230 V AC digital I/O) |
| Brand | ABB |
| Series | DCS Control System Series |
| Supply / Signal Voltage | 230 V AC nominal for field I/O (digital) |
| Isolation / Channel Protection | Galvanically isolated inputs via optocouplers, time constant filtering ~2 ms/10 ms depending on channel. |
| Output Type | Relay contacts (DO1‑DO5 & DO8) up to 250 V AC, transistor/optocoupler outputs for other channels. |
| Digital Input Characteristics | For IOB‑23: resistor R1…R8 = 47 kΩ; “0signal” ≦40 V; “1signal” approx. 90…250 V. |
| Operating Temperature | –20 °C to +60 °C (some sources indicate –20°C to +70°C) |
| Dimensions (W × H × D) | Approx. 190 mm × 125 mm × 40 mm |
| Weight | ~0.74 kg (0.75 lbs ~0.34 kg reported for some variants) |
| Protection / Standards | CE compliance, galvanic isolation, built for industrial automation signal integrity. |
| Mounting / Installation | Rack or module frame mounting, typically outside the DCS main module to comply with isolation rules. |
Product Description
The ABB SDCS‑IOB‑23 functions as a robust I/O interface board on the 230 V AC digital field side, bridging the gap between high‑voltage field devices and the control logic of ABB’s DCS system. The board supports multiple digital inputs and outputs which are galvanically isolated and filtered, thus reducing electrical noise, interference and protecting the control electronics from field‑side disturbances.
Installation guidelines advise that the board be placed external to the DCS converter module housing and that proper grounding and shielding be employed for optimal performance. The I/O channels have configurable hardware resistors (R1…R8) and filtering time constants (2 ms or 10 ms) to match the signal characteristics of the connected field devices.
Because the board supports 230 V AC input levels for field devices (in contrast to lower‑voltage 24 V DC modules), it is particularly suited to applications where high‑voltage digital signals must be processed reliably. With its combination of isolation, signal conditioning, configurable filters and diagnostics (via status LEDs on certain channels), the SDCS‑IOB‑23 enables high‑integrity I/O communication in demanding industrial automation environments.
Product Applications
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Digital I/O interface for DC motor drive systems using ABB DCS series modules.
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Automation control systems in steel production lines, where high‑voltage sensors and interlocks operate at 230 V AC.
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Process plants (chemical, refining, pulp & paper) with mixed high‑voltage control signals needing clean interface into the drive control logic.
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Mining and material‑handling systems where I/O modules must tolerate harsh ambient conditions and high voltage field side signals.
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Power generation and utility drives where field side devices operate at AC voltage and require safe signal conversion into the control system.
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Marine or offshore automation systems where 230 V AC digital signals are common and robust isolation is essential.
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Retrofitting or upgrading existing automation control systems, replacing legacy high‑voltage I/O boards with the SDCS‑IOB‑23 for improved reliability.
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Any industrial application where isolated 230 V AC digital input/output control is needed as part of a complete drive or automation module.
Product Advantages
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High Voltage Field Compatibility – Supports 230 V AC digital I/O channels, eliminating need for external step‑down or isolation in many cases.
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Galvanic Isolation and Filtering – Ensures protected control electronics, reduced noise, and reliable signal integrity even in electrically noisy industrial environments.
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Configurable Input/Output Behavior – Customizable resistors and time constant filters offer adaptability to varied field device characteristics.
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Compact Yet Powerful Design – The form factor (~190×125×40 mm) and moderate weight (~0.74 kg) make it space efficient in control cabinets.
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Seamless Integration in ABB DCS Family – Designed explicitly for ABB’s modular drive systems facilitating upgrades and compatibility.
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Durable Industrial Construction – Built for continuous operation under challenging ambient conditions including wide temperature and humidity ranges.
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Simplified Maintenance – Standardized module design and diagnostics (LED indicators, isolated channels) simplify servicing and downtime.
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Future‑Proofing and Standardisation – High voltage I/O modules align with modern industrial automation needs and support long‑term system stability.
Brand Information
Brand: ABB
ABB is a globally recognized leader in automation, electrical control, and drive technologies. With roots in power and control systems, ABB’s drive‑control modules such as the DCS series are known for durability, precision, and integration in industrial environments worldwide. The SDCS‑IOB‑23 continues that legacy by delivering reliable I/O performance in high‑voltage field applications.
Product Series
Series: DCS Control System Series
The DCS Control System Series is ABB’s modular hardware platform for DC and AC drives, offering control boards, I/O modules, field interface boards, excitation boards and more. The SDCS‑IOB‑23 belongs to the I/O (Input/Output) interface category specializing in 230 V AC field side digital signals, part of a broader family including SDCS‑IOB‑21 (24‑48 V DC), SDCS‑IOB‑22 (115 V AC) and other variants.
Related Models (Same Series / Compatible Types)
| Model | Description | Key Parameters |
|---|---|---|
| SDCS‑IOB‑21 | I/O interface board for 24‑48 V DC field side signals. | Input: 24…48 V DC; Isolation: galvanic; Dimensions: ~140×120×30 mm; Weight: ~0.30 kg |
| SDCS‑IOB‑22 | I/O interface board for 115 V AC field side signals. | Input: 115 V AC; Isolation: galvanic; Dimensions: similar; Weight: ~0.34 kg |
| SDCS‑FIS‑31 | Field Interface/Signal board for analogue and encoder I/O. | 24 V DC; Channels: analog+digital; Dimensions: ~185×120×35 mm; Weight: 0.68 kg |
| SDCS‑CON‑4 | Control board module for DCS drive system. | Voltage: 24 V DC; Dimensions: ~160×100×30 mm; Weight: ~0.58 kg |
| SDCS‑FEX‑4A | Field Excitation board in same DCS modular family. | Output: 0–500 V DC, up to 35 A; Dimensions: 200×140×45 mm; Weight: 0.82 kg |
Popular Models (Same Brand)
| Model | Description | Key Parameters |
|---|---|---|
| ACS880‑01‑097A‑3 | High‑performance AC drive from ABB. | Power: 75 kW; Voltage: 400 V; Weight: 55 kg |
| DCS800‑S02‑0160‑05 | Advanced DC drive system in ABB’s portfolio. | Current: 160 A; Voltage: 500 V; Weight: 48 kg |
| CI858A | Communication interface module (PROFINET) for ABB automation. | Voltage: 24 V DC; Weight: ~0.50 kg |
| PM865K01 | Processor module for ABB drive and automation systems. | CPU: 32‑bit; Voltage: 24 V DC; Weight: ~0.55 kg |
| DSQC1047 | Control board module in ABB automation family. | 24 V DC; Dimensions: 210×130×40 mm; Weight: ~0.70 kg |
FAQ (Frequently Asked Questions)
Q1: What is the main purpose of the SDCS‑IOB‑23?
A1: It serves as a 230 V AC digital input/output interface board that allows high‑voltage field devices to connect into the ABB DCS control system with proper isolation and signal filtering.
Q2: Which field voltage level does the SDCS‑IOB‑23 support?
A2: The board is designed for 230 V AC field‑side digital inputs/outputs.
Q3: Does the SDCS‑IOB‑23 provide galvanic isolation between field and logic parts?
A3: Yes — the inputs are filtered and galvanically isolated via optocouplers and the module supports signal isolation to protect control electronics.
Q4: What are the typical dimensions and weight of this module?
A4: Approximate size is 190 mm × 125 mm × 40 mm and weight is around 0.74 kg.
Q5: What is the operating temperature range?
A5: It typically operates from –20 °C up to +60 °C (some sources indicate up to +70 °C).
Q6: Is the module compatible with other IOB types in the same family?
A6: Yes — it belongs to the same modular family (IOB‑21 for 24‑48 V DC, IOB‑22 for 115 V AC) and is compatible within the DCS architecture.
Q7: Can I directly replace an older I/O board with the SDCS‑IOB‑23?
A7: In many cases yes, provided wiring, field voltage level (230 V AC), and system configuration match. It is still advisable to verify system compatibility and mounting.
Q8: Why choose 230 V AC I/O modules like this?
A8: For field devices that operate at 230 V AC, using a matching I/O interface board avoids extra converters, simplifies wiring, and ensures signal integrity with proper isolation.
Q9: What kind of outputs does the board provide?
A9: The board includes relay contacts for some outputs (e.g., up to 250 V AC) and optocoupler or transistor outputs for lower signal levels, allowing digital control of field devices.
Q10: How does the SDCS‑IOB‑23 help in reducing maintenance?
A10: With robust isolation, filtered signals, modular construction and LED status diagnostics, it reduces unplanned downtime and simplifies servicing and replacement of I/O modules.
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