Product Details
Description
The AO845 is a high-reliability current output module that delivers 4–20 mA signals to control valves, positioners, and actuators. It supports bi-directional HART communication for device diagnostics and, with a redundant MTU, ensures fault-tolerant operation. Widely used in oil and gas, petrochemical, and power industries, it provides safe and stable process control.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: AO845 (3BSE023676R1)
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Output Channels: 8 channels
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Signal Range: 4 to 20 mA
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D/A Resolution: 12 bits
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HART Support: Bi-directional HART protocol pass-through
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Redundancy: Supports 1:1 redundancy for high availability
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Power Supply: 24 VDC nominal
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Physical Weight: 0.25 kg (0.55 lbs)
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Maximum Load: 750 ohms at 20 mA
Features
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High-Availability Redundancy: Designed for paired operation to provide seamless failover, ensuring the process remains controlled during a module swap or internal fault.
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HART Protocol Capability: Facilitates digital data exchange with smart instruments, allowing for remote asset management and secondary variable monitoring.
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Intelligent Fail-Safe Logic: Features user-configurable safety states to hold the last valid signal or move to a pre-defined safe value during communication loss.
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Comprehensive Self-Diagnostics: Continuously monitors the health of internal digital-to-analog converters and output loop integrity.
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Active Current Supervision: Automatically detects open circuits and field wiring faults, reporting errors immediately to the central controller.
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Hot-Swap Support: Allows for live replacement of a faulty module without requiring a system shutdown, significantly reducing maintenance downtime.
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
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Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
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Mastering PLC Power Supply Architectures and Operating Voltages
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