Product Description:

B & R Automation produces the ECPEB2 analog input module within the ECP Multi Control Modules series. This board-level device converts field current signals into digital data for scalable industrial automation tasks that rely on continuous analog signal acquisition. It is typically installed in distributed control racks where multiple analog transmitters for flow, pressure, or level must be monitored through a shared control platform.

The module supports 8 input channels, allowing eight separate process loops to be sampled through a 0 to 20 mA input range. Each conversion is quantized with 10-bit resolution, so controllers receive 1024 discrete levels for closed-loop regulation. Basic measurement error is held to ±0.3 % at 20 °C, and a dedicated limit status LED provides visual feedback when any input reaches that threshold. The front end presents a 50 Ω input load and a fixed 1 V drop at 20 mA, which helps with loop power budgeting. A passive 6 dB/decade filter with a 640 Hz corner frequency suppresses high-frequency noise before sampling, and the absence of galvanic isolation means the field side shares a common reference with system ground. For internal supplies, the card draws 0.5 W from −30 V and another 0.5 W from +15 V during steady operation.

In drift-sensitive installations, the analog front end stays predictable: gain varies only ±0.03 %/°C while offset changes no more than ±0.0055 %/°C across the rated temperature span. During peak load, the board draws 0.7 W from the dedicated +8 V rail, which helps size the control supply for the rack. Linearity is 0.45 %/V, so conversion accuracy remains consistent even when backplane voltage changes slightly. That helps keep process values stable when several channels are active at the same time.