Product Details
Description
The AI845 is a versatile input module for current-based transmitters, offering accurate signal conversion and integrated HART communication for seamless device diagnostics. Designed for high availability, it supports single or redundant setups via dedicated MTUs, ensuring continuous visibility of key process variables during maintenance or faults.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: AI845 (3BSE023675R1)
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Input Channels: 8 channels (single-ended)
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Signal Range: 4 to 20 mA, 0 to 20 mA
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A/D Resolution: 12 bits
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HART Support: Bi-directional HART communication pass-through
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Redundancy: Supports 1:1 redundancy
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Power Supply: 24 VDC nominal
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Physical Weight: 0.25 kg (0.55 lbs)
Features
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High-Availability Redundancy: Specifically designed to work in pairs, providing a bumpless transfer of signal processing if the primary module fails.
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HART Protocol Integration: Facilitates digital communication with smart field devices for remote calibration and asset management.
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Built-in Current Limiting: Protects the module and system electronics against field wiring short circuits and over-current conditions.
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Advanced Internal Diagnostics: Continuously monitors the health of A/D converters and internal power rails, reporting status via LED indicators.
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Under-range and Over-range Detection: Automatically identifies and flags signal levels outside the standard 4-20 mA window to catch sensor failures.
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Galvanic Isolation: Features robust isolation between the field inputs and the internal ModuleBus to prevent electrical surge damage.
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
Redundant Automation Systems: Core Architecture, Business Value, and Technical Advantages
Unplanned downtime poses a major financial threat to process manufacturing. To prevent costly interruptions, engineers deploy redundant PLC and DCS architectures that ensure continuous operation when hardware fails. This technical guide explores redundancy principles, critical system nodes, and real-world scenarios.
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.