ABB AO801

Description

Detailed parameter table

ABB AO801

Product introduction

The AO801 is a high-performance analog output module from ABB, engineered to convert digital control signals from the AC800M controller into precise analog outputs for industrial actuators and devices. As a key member of the S800 I/O family, it acts as the “execution layer” in automation systems, translating controller commands into actionable signals that regulate processes like valve positioning, motor speed, and temperature.

With 4 independently configurable channels, the AO801 adapts to diverse industrial needs—whether driving a 4-20 mA valve in a chemical reactor or a 0-10 V variable speed pump in a water treatment plant. Its robust design ensures reliable operation in harsh environments, making it a cornerstone in applications where precision control directly impacts product quality and process efficiency.

Core advantages and technical highlights

Channel flexibility

Each channel of the AO801 can be individually set to 4-20 mA, 0-20 mA, or 0-10 V output, eliminating the need for multiple specialized modules. In a food processing plant, for example, one channel might control a 4-20 mA diaphragm valve for ingredient dosing, while another adjusts a 0-10 V conveyor speed—all within a single AO801. This versatility reduces inventory costs and simplifies system design.

Precision control

Boasting ±0.1% accuracy and 16-bit resolution, the AO801 delivers tight control over analog outputs. In pharmaceutical manufacturing, where even 0.5% deviations in mixing tank pH (regulated via 4-20 mA signals) can ruin batches, this precision ensures consistent product quality. The module’s low drift over temperature further maintains accuracy in environments with fluctuating heat, such as factory floors.

Fault tolerance

The AO801 features channel-level short-circuit protection and LED diagnostics, ensuring a single fault doesn’t disrupt the entire system. If a wire to a 0-10 V fan motor shorts, the affected channel shuts down safely, and its red LED alerts technicians—allowing targeted repairs without halting other processes. This resilience minimizes downtime in critical applications like oil refineries.

Typical application scenarios

In a chemical processing plant, the AO801 regulates the flow of raw materials into reaction vessels. Connected to the TB820V2 terminal base, it receives digital setpoints from the AC800M controller and converts them into 4-20 mA signals for pneumatic valve actuators. The module’s precision ensures flow rates stay within ±0.3% of setpoints, preventing over-pressurization and ensuring chemical reactions proceed as designed.

In a semiconductor fabrication cleanroom, the AO801 controls temperature in deposition chambers via 0-10 V heaters. Its stable outputs maintain temperatures within ±0.1°C, critical for producing uniform thin films on wafers. Data from paired AI810 3BSE008516R1 modules feeds into the controller, which adjusts the AO801 outputs in real time to counteract environmental fluctuations.

ABB AO801

Related model recommendations

• AI810 3BSE008516R1: Works with AO801in closed-loop systems, providing feedback from sensors to refine the module’s output signals.
• TB820V2: A terminal base that secures wiring for the AO801, simplifying installation and ensuring reliable connections.
• AO810: An 8-channel analog output module, ideal for larger systems needing more outputs than the AO801can provide.
• DO910: Complements AO801by triggering emergency shutdowns (e.g., via relay outputs) if AO801-controlled variables exceed safe limits.
• CI801: Transmits AO801setpoints over Modbus networks, enabling remote adjustment in distributed systems.
• 3BHE009017R0102: Supplies stable 24 V DC power to the AO801, preventing voltage fluctuations that could affect output accuracy.

Installation, commissioning and maintenance instructions

Installation preparation

Before installing the AO801, ensure the control cabinet is clean, dry, and free of conductive debris. Use a torque screwdriver and wire strippers (0.5-1.5 mm²) for secure terminations. Mount the TB820V2 terminal base on a 35 mm DIN rail, then plug the AO801 into the base until it locks. Use shielded cables for analog signals, grounding shields at both ends to reduce noise. Verify 24 V DC power polarity to avoid damaging the module.

Maintenance suggestions

Daily checks of the AO801 involve verifying green LEDs for power and active channels; red LEDs indicate faults like short circuits. Calibrate annually with a precision multimeter to maintain ±0.1% accuracy—essential in regulated industries. Inspect terminal connections quarterly for corrosion or looseness, which can cause signal degradation. If a channel fails, swap loads between channels to isolate issues: replace the AO801 with an ABB-approved spare if internal faults are confirmed, ensuring it matches the original channel configurations.

Service and guarantee commitment

The AO801 is backed by a 3-year warranty, covering defects in materials and workmanship. ABB’s global technical team provides 24/7 support for installation, calibration, and troubleshooting, including guidance on integrating with AI810 3BSE008516R1 modules and AC800M controllers.

Customers receive access to detailed manuals and configuration tools for seamless setup. Extended service contracts offer on-site maintenance and priority support, ensuring the AO801 performs optimally throughout its lifecycle. ABB’s commitment to quality ensures the AO801 delivers reliable, precise control in even the most demanding industrial environments.