Product Overview
When process control demands precise analog output signals, the ABB AO810 Analog Output Module delivers reliable performance. Part of the S800 I/O family, this module provides eight unipolar channels supporting 0-20 mA and 4-20 mA signal ranges. The AO810 supervises communication to D/A-converters by reading back and verifying serial data, ensuring output integrity. Open-circuit diagnostics are received during readback, and the module performs cyclic self-diagnostics to catch issues early.
Technical Specifications Breakdown
The AO810 features a 14-bit resolution for accurate signal generation. Output channels are groupwise isolated from ground, enhancing noise immunity. The module supports an output load of ≤ 500 Ω when supply is connected to L1+ only, and 250-850 Ω with supply connected to L2+ only. Maximum error is 0.1% at 0-500 ohms (current), with temperature drift of typ. 30 ppm/°C and max 60 ppm/°C. Rise time is 0.35 ms (PL = 500 Ω), and the update cycle time is ≤ 2 ms. Power dissipation is 2.3 W, with current consumption of max 70 mA on +5 V Modulebus and 245 mA on +24 V external.
Industry Applications
In continuous manufacturing processes like chemical dosing or water treatment, the AO810 ensures stable 4-20 mA loops for valve positioning or pump speed control. The open-circuit diagnostic (active when output current >1 mA) alerts operators to broken wires, reducing downtime. For batch processing, the 0-20 mA range supports precise recipe control. The module’s short-circuit proof output and current limiting protect against wiring faults.
Installation & Setup Guidance
Mount the AO810 on an S800 mounting unit (MTU) such as TU810, TU812, TU814, TU830, or TU833. Use the TU810V1 MTU for compact installations. The module keying code is AE. Ensure proper grounding per Class I (earth protected) requirements. Connect field wiring to the MTU terminals, observing maximum cable length of 600 meters (656 yards). For vertical mounting in compact MTU, the maximum ambient temperature is 40 °C (104 °F).
Maintenance & Reliability
The AO810 performs cyclic self-diagnostics and reports module errors (output power low) and channel errors (open circuit for current >1 mA). Front LEDs indicate Fault (F), Run (R), Warning (W), and OSP status. The module operates in temperatures from 0 to +55 °C (+32 to +131 °F) and stores from -40 to +70 °C (-40 to +158 °F). With IP20 protection and corrosion protection per ISA-S71.04: G3, it suits industrial environments. The OSP function sets outputs to a predetermined state upon error detection, enhancing system safety.
Compatibility & Integration
The AO810 integrates with ABB S800 I/O systems and is compatible with MTUs TU810, TU812, TU814, TU830, and TU833. It supports HART No, SOE No, and is not redundant or high integrity. The module uses the Modulebus for communication. For system integration, verify compatibility with your ABB controller or DCS.
Selection Guide & Purchasing Advice
Before ordering the AO810 (article number 3BSE038415R1), confirm your system’s compatibility with S800 mechanics and required MTU. The module is not intrinsically safe and is not redundant. For current lifecycle status and availability, contact SpareTechPLC. As an industrial automation parts supplier, SpareTechPLC offers genuine ABB modules and expert support.
Troubleshooting & Common Issues
If a channel error occurs, check for open circuits when output current exceeds 1 mA. The module reports output power low as a module error. Verify that the supply voltage to output circuitry is sufficient. If the output current is less than the set value (and set value >1 mA), inspect the field wiring and load resistance. Ensure load resistance is within 250-850 Ω (with L2+ supply) or ≤ 500 Ω (L1+ only).
