Brand:ABB PLC Item No.:DI821 Product Origin:Sweden (SE) Product Dimensions:45 x 102 x 119 mm Product Weight:0.18 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The ABB DI821 delivers dependable digital input acquisition for high-performance automation. With its compact footprint, stable electronics, and straightforward integration, the module plays a crucial role in ensuring that field-level signals are accurately transferred into the control system. Its engineering-focused design makes it a preferred choice for operators seeking long-term reliability and clear diagnostic visibility.
Technical Specifications
Item
Details
Model
ABB DI821
Part Number
3BSE008550R1
Function
Numeric / Digital Input Module
System Compatibility
AC 800M
Input Type
Binary digital inputs
Isolation
Galvanically isolated channels
Diagnostics
Status and health monitoring
Operating Temperature
Typically 0…+55°C
Mounting Method
Baseplate / DIN-rail via AC 800M system
Dimensions
45 × 102 × 119 mm
Weight
0.18 kg
Closely Associated Modules
ABB DI810 Digital Input Module
ABB DO810 Digital Output Module
ABB AI810 Analog Input Module
ABB PM851A Processor Module
High-Demand Related Models
ABB DI820 Digital Input Module
ABB DI814 24 VDC Input Module
ABB TU830 Baseplate Module
ABB DX822 Digital Expansion Module
Where It Excels in Real Operations
The ABB DI821 3BSE008550R1 is a dependable numeric input module designed for applications where precise and stable digital signal acquisition is a core requirement. It integrates smoothly into the AC 800M control environment, making it an ideal fit for oil & gas, energy distribution, large-scale industrial machinery, and automated manufacturing lines that demand consistent input accuracy.
Performance-Driven Benefits
Engineers choose the DI821 not only for its reliability but also for its ability to simplify field wiring and ensure high signal integrity. It delivers fast response times, supports robust diagnostics, and reduces commissioning effort—helping facilities improve operational uptime and long-term system sustainability. Its balanced blend of speed and durability makes it a valuable building block in modern industrial architectures.
Technical FAQs
What signal types does the DI821 handle?
It processes binary input signals for use in ABB AC 800M systems.
Is it compatible with standard 24 VDC digital field signals?
Yes, it supports commonly used industrial digital signal levels.
Does the module support channel-by-channel diagnostics?
It provides essential status information for troubleshooting and maintenance.
How many digital inputs are available?
The DI821 comes with multiple dedicated input channels for flexible field integration.
Is galvanic isolation included?
Yes, the design incorporates isolation to protect system electronics.
Can the module be hot-swapped?
Within supported AC 800M configurations, it can be replaced with minimal disruption.
Does it support filtering for noisy signals?
Yes, onboard filtering helps improve accuracy in electrically noisy environments.
What engineering tools are used for configuration?
Configuration and diagnostics are handled through ABB Control Builder.
Is it suitable for safety-critical systems?
It is primarily for standard control applications, not SIL-classified safety loops.
Does the DI821 support redundant controllers?
It can operate in redundancy-enabled AC 800M architectures.
