Product Details
Description
The AO820 features superior channel-to-channel isolation and flexible configuration for current or voltage outputs. It includes advanced diagnostics for loop and hardware health, ensuring precise and stable control through high-resolution D/A conversion. Ideal for power, chemical, and water industries, it delivers reliable performance in demanding environments.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: AO820 (3BSE008546R1)
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Number of Channels: 4 channels, individually isolated
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Signal Ranges: 0 to 20 mA, 4 to 20 mA, or 0 to 10 V, ±10 V
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D/A Resolution: 12 bits plus sign
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Isolation Rating: 50 V continuous channel-to-channel and channel-to-ground
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Power Supply: 24 VDC nominal
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Dimensions: 119 mm x 45 mm x 102 mm
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Physical Weight: 0.22 kg (0.48 lbs)
Features
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Advanced Galvanic Isolation: Provides dedicated isolation for every channel, eliminating risks associated with ground loops and protecting the system from field-side transients.
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Bi-Functional Output Support: Capable of delivering both unipolar/bipolar voltage and standardized current loops from a single module type.
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Integrated Loop Supervision: Automatically detects open-circuit conditions in current mode and short-circuits in voltage mode to ensure loop integrity.
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Configurable Safety States: Supports user-defined fail-safe actions, such as forcing outputs to a specific safe value or holding the last known state during communication loss.
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Hot-Swap Compatibility: Engineered for live maintenance, allowing the module to be swapped without powering down the I/O station or affecting adjacent modules.
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Robust Diagnostic LEDs: Features a comprehensive set of front-panel indicators for rapid identification of module status, communication health, and channel faults.
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
Ensuring Operational Continuity: The Strategic Value of Redundant Automation Systems
In modern industrial landscapes, unplanned downtime is the ultimate adversary. For sectors relying on complex PLC and DCS architectures, a single hardware failure can trigger catastrophic production losses. Therefore, implementing redundant automation systems is no longer a luxury; it is a fundamental requirement for mission-critical operations. In this article, I analyze why redundancy remains the backbone of reliable industrial infrastructure.
Selecting the Right Cables for Industrial Automation: A Comprehensive Guide
Selecting the appropriate cabling infrastructure is critical for the success of any industrial automation project. Improper cable selection often leads to signal degradation, system instability, and costly downtime. As an automation engineer, I frequently see projects compromised by poor cabling choices in harsh industrial environments. This guide simplifies the complex landscape of cabling to help you make informed decisions for your PLC, DCS, and control systems.
Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
In industrial automation, the Emergency Stop (E-Stop) pushbutton is the ultimate safety line. However, relying on a single Normally-Closed (NC) contact can sometimes lead to unexpected spurious trips. As a control systems engineer, I have seen these nuisance trips halt entire production lines, causing significant downtime. Understanding why these components fail and how to implement robust architecture is essential for any reliable DCS or PLC-based safety system.