ABB AO810V2 (A0810V2) 3BSE038415R1 8-Channel 4–20mA Analog Output Module for S800 I/O

Product Overview

The ABB A0810V2​ — formally designated AO810V2, article number 3BSE038415R1​ — is an 8-channel unipolar Analog Output Module within the ABB S800 I/O distributed process I/O system. It is the second-generation, enhanced successor to the original AO810, and its role is to convert the digital control values issued by an ABB (or third-party) controller into precise, standards-compliant 0–20 mA / 4–20 mA​ analog current signals that drive field actuators: control-valve positioners, variable-frequency drives (VFDs), pneumatic converters, metering pumps, and indicating instruments. In a typical S800 I/O architecture, the ABB A0810V2​ plugs into a compatible Module Termination Unit (MTU) — TU810V1, TU812V1, TU814V1, TU830V1, or TU833​ — which handles the field wiring, while the module itself communicates with the controller over ABB ModuleBus. Through this architecture, the ABB A0810V2​ can be deployed in both centralized and distributed I/O installations serving ABB System 800xA, AC 800M, Advant, and Freelance controllers, as well as process controllers from other vendors that support industry-standard fieldbus technology.

Precision and signal integrity are the defining priorities of the ABB A0810V2. Each output channel is served by a 14-bit digital-to-analog converter, delivering a full-scale accuracy of ±0.1% (measured at 0–500 Ω load) with a typical temperature drift of just 30 ppm/°C (maximum 60 ppm/°C). An update cycle of ≤2 ms and a 0.35 ms rise time at 500 Ω load ensure that the module tracks fast-changing control demands without introducing perceptible lag — a critical capability in cascade flow and pressure loops where even small setpoint errors are amplified. To guarantee that the commanded value actually reaches the field, the module performs serial read-back verification​ on every D/A conversion: the digital data is read back and checked, and open-circuit diagnostics are captured during the same read-back cycle. This continuous self-supervision, combined with cyclic module-level diagnostics and process-power supply monitoring, makes the ABB A0810V2​ exceptionally transparent and trustworthy in safety- and revenue-critical loops.

What truly sets the ABB A0810V2​ apart is its OSP (Output Set Point) safe-state behavior. When a communication fault or module error is detected, the module can automatically drive each output to a predetermined safe value — preventing a control valve from slamming fully open or fully closed and averting a potential process upset. Complemented by short-circuit-proof current-limited outputs, groupwise isolation from ground, and comprehensive front-panel status indication (F = Fault, R = Run, W = Warning, O = OSP), the module is engineered for the demanding realities of continuous-process plants. With hazardous-area approvals covering Class I Division 2, ATEX Zone 2, and IECEx, plus marine certifications from ABS, BV, DNV, LR, and CCS, the ​ is genuinely global in its applicability. For plant owners managing mature S800 I/O assets, tested replacement units provide a low-risk, like-for-like route to sustained reliability — preserving proven control logic, MTU termination, and field wiring without migration cost or downtime.

Technical Specifications