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Product Overview
The ABB DI820 3BSE008512R1 is a high-density digital input module from ABB’s S800 I/O series, designed to provide 32 channels of non-isolated digital input. Each input channel is optimized for fast, reliable detection of binary status signals from field devices such as push buttons, limit switches, and relays.
With common ground design, the DI820 offers high signal integrity and is suited for applications where isolation between channels is not necessary. The module supports 24 V DC inputs, and it interfaces efficiently with ABB’s AC 800M control system, allowing high-performance automation integration in process industries.
Key Features
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32-channel digital input module
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Common ground configuration
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Supports 24 V DC sink/source inputs
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High-speed signal acquisition
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LED status indicators for every 8-channel group
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Compatible with AC 800M and S800 I/O systems
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Designed for high-density installation
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Low power consumption and compact footprint
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | DI820 Digital Input Module |
| Part Number | 3BSE008512R1 |
| Number of Channels | 32 |
| Input Voltage Range | 18–30 V DC |
| Nominal Input Voltage | 24 V DC |
| Input Current | Approx. 7 mA at 24 V DC |
| Input Type | Digital (sink/source), non-isolated |
| Common Reference | Yes, common ground |
| Input Delay | Approx. 4 ms |
| Channel Diagnostics | Group LED indicators (per 8 channels) |
| Power Consumption | Approx. 2.5 W |
| Compatible Terminal Units | TU830V1, TU833 |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5–95%, non-condensing |
| Protection Class | IP20 |
| Certifications | CE, UL, CSA, RoHS, Marine approvals |
| Dimensions | 45 x 102 x 119mm |
| Weight | 0.18 kg |
Industry Applications
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Oil & Gas – Digital monitoring for valve and interlock systems
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Power Generation – Status inputs for switchgear and protection systems
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Pharmaceuticals – Compact signal acquisition for cleanroom environments
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Food & Beverage – Input collection for process machinery and automation lines
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Water Treatment – Monitoring level switches and pump control inputs
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Building Automation – Input aggregation for HVAC and lighting controls
Product Advantages
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High-Density I/O – 32 channels per module reduce panel space and wiring complexity
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Simple Wiring Design – Common ground design streamlines installation
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Fast Input Response – Suitable for fast process monitoring
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Group-Based Diagnostics – LED indication per channel group simplifies fault finding
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Wide Temperature Range – Operates in extreme industrial environments
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Reliable ABB Engineering – Proven durability and compatibility within ABB control architecture
Frequently Asked Questions (FAQ)
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How many digital inputs does the DI820 support?
The module supports 32 digital input channels. -
Are the input channels isolated?
No, the channels share a common ground, making it suitable for non-isolated applications. -
What input voltage is supported?
The DI820 is designed for 24 V DC, accepting a range from 18 V to 30 V. -
Can I use both sink and source devices with this module?
Yes, the module supports sink/source configurations. -
Does the module have per-channel LEDs?
It has group LED indicators, one per 8-channel group. -
Which terminal units are compatible with DI820?
Compatible terminal units include TU830V1 and TU833. -
Can the module operate in high temperatures?
Yes, it can operate in environments up to +70°C. -
Is hot swapping supported?
Yes, the DI820 supports hot swapping when used with appropriate terminal units. -
What are its physical dimensions and weight?
Dimensions are 45 x 102 x 119mm, and it weighs approximately 0.18 kg. -
Which ABB control system is it used with?
It is typically used with AC 800M and S800 I/O systems.
Related Models in the Same Series
| Model | Description |
|---|---|
| DI810 3BSE008508R1 | 16-channel digital input module (non-isolated) |
| DI811 3BSE008552R1 | 16-channel digital input with isolation |
| DI814 3BUR001454R1 | 16-channel digital input, isolated, fast response |
| DI818 3BSE069052R1 | 16-channel isolated digital input module |
| TU830V1 | Terminal unit for 32-channel DI modules |
| TU833 | Extended terminal unit for 32-channel configurations |
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