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
Evolving SCADA System Architectures in Industrial Automation
A robust Supervisory Control and Data Acquisition (SCADA) system serves as the heartbeat of modern industrial operations. Understanding SCADA system architecture is vital for engineers designing efficient control systems. These architectures have evolved from isolated, monolithic structures to highly interconnected, networked ecosystems. Choosing the right design requires balancing data visibility, processing power, and long-term scalability requirements.
Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.