Product Description:

The 2AI700.6 is a 16-channel current input module produced by B&R Automation within the System 2010 Controllers series. Installed side by side with CPU and I/O slices, the module converts field loop currents into digital data so the controller can monitor analog process variables such as pressure, flow, or position in industrial machines. With integrated signal conditioning and a compact housing, it suits centralized or distributed control cabinets and feeds the backplane with time-synchronized input samples for deterministic logic execution.

Its measurement accuracy is specified as ±0.25 % at 20 °C, meaning the worst-case deviation from the true input current stays within a quarter of a percent under reference conditions. A conversion time of 1 ms covers sampling, hold, and A/D processing, so a full set of values is refreshed every millisecond. The front-end filter attenuates frequencies above 400 Hz, reducing high-frequency noise before digitization, and common-mode signals are suppressed by 40 dB at 50 Hz. With 16 differential inputs, large multi-loop installations can be handled in one slice without expansion racks. Each channel has 12-bit resolution, yielding 4096 discrete codes across the ±20 mA nominal span. The housing measures 285 × 40 × 185 mm, allowing dense mounting in 19-inch subracks.

For extended operation between 0 °C and 60 °C, the precision widens only to ±0.375 %, preserving control quality in warm panels. Internal galvanic isolation is provided toward the power and communication core, yet there is no isolation between individual channels, so plant wiring must share a common return. The module draws up to 9 W from the backplane, which matters when several I/O cards are stacked in the same system. It tolerates a full input excursion of ±30 mA, protecting the converter against brief over-range currents, and it creates only 1 V of drop at 20 mA across the built-in 50 Ω load resistor, helping preserve loop supply headroom.