ABB AO845 3BSE023675R1 | 8-Channel Redundant Analog Output Module with HART Support

Description

1. Product Overview

The ABB AO845 is a high-performance 8-channel Analog Output Module designed for the S800 I/O system. It is specifically engineered for applications requiring high reliability and advanced device diagnostics. The AO845 supports redundancy, allowing two modules to be paired on a redundant termination unit to ensure continuous operation even if one module fails.

In addition to standard 4-20 mA signal output, the AO845 features integrated HART communication pass-through. This allows maintenance teams to perform remote configuration, calibration, and diagnostics of field instruments (such as control valves) directly through the control system, significantly reducing operational costs and improving plant safety.

Key Applications:

• Critical Control Loops: Managing final control elements where a signal loss could lead to unscheduled downtime.
• HART Device Management: Enabling smart instrumentation asset management via System 800xA.
• Redundant System Architectures: Providing fault-tolerant analog outputs for power, oil & gas, and chemical industries.
• Emergency Shutdown Systems (ESD): Integration into safety-related monitoring and control.

2. Data Sheet

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3. Procurement Process

1. Technical Match: We verify the AO845 (3BSE023675R1) hardware and firmware versions for compatibility with your existing S800 I/O clusters.
2. Formal Quotation: You will receive a detailed quote including tiered pricing, stock availability, and global express delivery options.
3. Order Confirmation: Finalizing quantity and any required export documentation (e.g., Certificate of Origin, CoC).
4. Sales Agreement: Issuance of a Proforma Invoice (PI) for secure transaction management.
5. Secure Payment: Payment accepted via T/T (Bank Wire Transfer).
6. Quality Inspection: 100% verification of factory seals, serial numbers, and physical connector integrity.
7. Anti-Static Packaging: Specialized industrial packaging ensures the module is protected from ESD and vibration during transit.
8. Global Distribution: Expedited shipping via DHL, FedEx, or UPS for mission-critical industrial sites.

4. Products Showcase (Photos & Video)

5. Related Models

• ABB AI625 (8-Channel Redundant Analog Input with HART)
• ABB TU844 / TU845 (Redundant Termination Units)
• ABB AI810 (Redundant Fieldbus Communication Interface)
• ABB AC 800M PM864 / PM866 (Process Controller CPUs)

6. Warranty & After-Sales

• 12-Month Global Warranty: Full 1-year coverage against any manufacturing or functional defects.
• 100% Authenticity Guarantee: We supply only genuine, factory-new ABB products; no refurbished or used units.
• Technical Support: Assistance with module redundancy configuration and HART routing within the ABB engineering environment.

7. FAQ

Q: Can the AO845 be used without redundancy?

Yes, the AO845 can operate as a single (non-redundant) module on a standard termination unit. However, its primary design advantage is the ability to provide bumpless redundancy when paired.

Q: What is the benefit of HART pass-through in this module?

The integrated HART support allows the controller to communicate with smart field devices. You can read secondary variables or perform device diagnostics without needing a separate handheld communicator or manual field inspections.

Q: Does the AO845 require a separate power supply for the output loops?

The AO845 is powered via the I/O bus and the termination unit. Depending on the load and configuration, the loops are typically powered through the module itself.