Sixteen single-ended current channels are provided in one RX3i slot. The module accepts 0–20 mA, 4–20 mA and Enhanced 4–20 mA ranges, making it suitable for concentrated process measurement points such as flow, pressure and other current-loop instruments.

The 4–20 mA range provides 4 μA/bit resolution, while 0–20 mA and Enhanced 4–20 mA provide 5 μA/bit. The input impedance is 250 Ω and the input low-pass filter response is 19 Hz.

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Yes. The channel range can be selected for 0–20 mA, 4–20 mA or Enhanced 4–20 mA. This makes it useful when a panel contains mixed current-loop transmitter ranges.

Its 16-channel high-density format places sixteen current inputs in one RX3i slot, making it a stronger choice than a four-channel current module when channel density is the priority.

Confirm the complete part number and revision, the configured channel ranges, external 24 VDC supply arrangement, terminal wiring and the expected project configuration before energizing the replacement.

Yes. The specified field-to-backplane isolation is 250 VAC continuous, with a 1500 VAC withstand rating for one minute.

The decision mainly comes down to channel density and application requirements. IC694ALG221 provides four current inputs with a faster all-channel update, while IC694ALG223-BB provides sixteen current channels and selectable current ranges for a denser process I/O arrangement.