Industrial BX-04AD-3 Analog Input Module (4-Channel)

The BX-04AD-3 BRX analog input module from Automation Direct is a four-channel, universal sinking input expansion for BRX Do-more controllers that accepts either current or voltage signals. Each channel supports current ranges of 0–20 mA, 4–20 mA, and ±20 mA, or voltage ranges of 0–5 V, 0–10 V, ±5 V, and ±10 V, with 16-bit resolution (16-bit at ±10 V or ±20 mA). The module uses Delta-Sigma conversion and provides an all-channel update rate of 1.2 ms, with a single common reference for all inputs. Input impedance is 249 Ω (current) and 100 kΩ (voltage), and the maximum continuous overload is ±40 mA for current or ±20 V for voltage. Hardware filtering includes an active low-pass filter with a -3 dB point near 1 kHz to help suppress noise. Designed for BRX systems, the BX-04AD-3 is ideal for interfacing 4–20 mA process sensors and voltage-output transducers into a BRX PLC for real-time monitoring, data logging, and control applications, all within a compact, 4-channel expansion module.