ABB AO845A 3BSE045584R1 S800 I/O Redundant Analog Output Module
Product Overview
The ABB AO845A (Part Number: 3BSE045584R1) is a high-performance analog output module within the S800 I/O family, specifically engineered for critical process control in ABB System 800xA and Symphony Plus architectures. This module provides 8 channels of current output (0–20 mA or 4–20 mA) and is unique for its native support of redundant configurations. By utilizing advanced on-board diagnostics and a rated isolation of 50V, the AO845A ensures the precise execution of control strategies for actuators, positioners, and variable speed drives. The "A" designation signifies an updated revision that maintains full backward compatibility while offering enhanced electrical stability for demanding industrial loops.
Technical Specifications
Detailed technical parameters for the AO845A analog module:
| Parameter | Specification Details |
| Model Number | AO845A |
| Product ID | 3BSE045584R1 |
| Manufacturer | ABB |
| Series | S800 I/O |
| Output Channels | 8 Channels (Single or Redundant) |
| Signal Range | 0–20 mA / 4–20 mA (Configurable) |
| Resolution | 12 Bits |
| Accuracy | ±0.1% of Full Scale |
| Max Load Resistance | 750 Ω (at 24 VDC supply) |
| Rated Isolation | 50 V |
| Update Rate | 1 ms (all channels) |
| Power Supply | 24 VDC (Typical) |
| Power Dissipation | Max 5.0 W |
| Dimensions (WxHxD) | 45 x 119 x 102 mm |
| Shipping Weight | 2.0 kg (including factory packing) |
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Guide
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