Product Description:

The ECPE42-1 module is produced by B&R Automation as part of the ECP Multi Control Modules series. It is an analog front-end card for industrial control systems. It digitizes low-level voltage signals so that a PLC or motion controller can execute closed-loop tasks such as tension regulation, metering, or process feedback. This allows the control system to react to changing process conditions in real time.

This card converts each input with a resolution of 10 bit, allowing 1024 discrete codes across its nominal span of 0 to 10 V. A differential input resistance of 400 kΩ minimizes loading on the external transducer, while the internal low-pass network imposes a cutoff at 640 Hz with a 6 dB per decade roll-off to attenuate higher-frequency noise. The card has 4 analog channels, so one module can monitor multiple sensors without additional expansion boards. Under reference conditions of 20 °C, basic precision remains within ±0.3 % of full scale, and linearity is limited to 0.2 %/V to keep the transfer function predictable. Input excursions up to ±22 V are tolerated without damage, and a front-panel LED indicates when the programmed limits are exceeded. Galvanic isolation is not provided, so the signal ground must be referenced to the controller backplane.

Thermal stability includes a gain drift of ±0.025 %/°C and an offset drift of ±0.0025 %/°C, allowing reliable measurements across typical cabinet temperatures. Power demand is modest at +8 V 0.7 W; +15 V 0.4 W; -30 V 0.3 W, which simplifies sizing of the system power supply. Because galvanic isolation is absent, shielding and proper grounding are the primary defenses against common-mode interference. Careful cable routing also helps reduce unwanted noise on low-level analog inputs.