Product Details
Description
The DI821 3BSE008550R1 is an 8-channel high-voltage input module with individual galvanic isolation for each channel, ensuring safety and signal integrity. It includes hardware filtering to reduce AC noise and contact chatter and supports hot-swapping via MTUs for minimal downtime in critical utility and manufacturing applications.
Specifications
-
Manufacturer: ABB
-
Country of Origin: Switzerland
-
Model Number: DI821 (3BSE008550R1)
-
Product Type: Digital Input Module
-
Number of Channels: 8 (Individually Isolated)
-
Rated Input Voltage: 230 V AC
-
Input Voltage Range: 164 to 264 V AC
-
Input Frequency: 47 to 63 Hz
-
Isolation: 2500 V galvanic isolation per channel
-
Power Supply: 24 V DC (via ModuleBus)
-
Weight: 0.35 kg
Features
-
Direct Mains Sensing: Eliminates the requirement for interposing relays by directly interfacing with 230V AC field circuits.
-
Individual Channel Isolation: Provides superior protection and noise immunity through independent galvanic isolation for every input path.
-
Enhanced System Safety: High dielectric strength between field and logic circuits ensures the protection of sensitive controller hardware.
-
Efficient Process Maintenance: Supports hot-swap functionality, enabling rapid module exchange without disrupting the operation of the remaining I/O station.
-
Industrial-Grade Filtering: Integrated AC filters ensure accurate state detection by neutralizing high-frequency interference and mechanical contact bounce.
-
Comprehensive Status Monitoring: An array of front-panel LEDs provides clear visual indication of individual channel logic states and module health.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Mastering Siemens Interface Modules (IM): The Backbone of Distributed I/O
In the realm of industrial automation, efficiency depends on how effectively a system communicates with its peripherals. The Siemens Interface Module (IM) serves as the critical link in this architecture. It enables seamless data exchange between centralized controllers and decentralized hardware. Whether you are working with the S7-300, S7-1500, or ET 200 series, understanding the IM is essential for modern control systems.
Understanding Dynamic Data Exchange (DDE) in Industrial Automation
Dynamic Data Exchange (DDE) remains a vital legacy protocol for industrial communication. Originally for general computing, it now bridges the gap between factory floor data and enterprise reporting. This enduring method provides a foundational link for integrating real-time software layers in modern industrial automation.
Master FIFO and LIFO Sequences for Advanced PLC Logic
In industrial automation, managing data flow is as critical as hardware control. This guide explores how FIFO and LIFO sequential logic can optimize your control systems. Master these essential tools to build more efficient sorting, inventory tracking, and data management workflows for any modern factory.