Product Description:

The MCPEA4-1 module is produced by B&R Automation for the ECZ Multi Analog Modules series and functions as a voltage-based analog input card for the X20 control platform. Installed on a Base Unit C backplane, it adds four single-ended channels that let a controller acquire low-level process signals and convert them into numerical data for closed-loop regulation or data logging within an industrial automation cell. The card is intended for applications that need compact acquisition of multiple analog voltage signals in one control node.

The module accepts a nominal signal span of 0–10 V and tolerates excursions from −0.3 to +13 V without damage. Front-end loading is fixed at 50 Ω, so connected sources must be able to drive that load while maintaining accuracy. Conversion granularity is 10-bit, producing 1,024 discrete counts across the range, and the basic precision at 20 °C is rated at ±0.3 % of full scale. Galvanic isolation is not provided, so the input commons share controller ground potential and external transducers must reference the same return. Offset drift is ±0.0025 %/°C, which supports predictable zero stability over typical cabinet temperature swings.

Channel density is 4, so one slot can monitor four separate sensors. Linearity error stays within 0.2 %, so the transfer curve remains nearly straight from zero to span. The gain coefficient changes by only ±0.025 %/°C, limiting scale variation as ambient temperatures fluctuate. Input bias current stays below <250 nA, which minimizes loading of high-impedance sources such as potentiometric position pickoffs. Because the design omits galvanic isolation, wiring must follow a single-point grounding scheme to avoid common-mode error. This arrangement suits compact machine controllers that read several analog signals from a shared ground reference.