XBF-AD04A

Description

4-channel analog input module, selectable voltage or current inputs, for the XGB expansion family. Supports 0–10 V and 4–20 mA signals with onboard range switch and per-channel filtering options.

The Polar Energy Assessment:

The XBF-AD04A provides four isolated analog inputs, selectable per channel between voltage and current modes using onboard switches, with input resistances typically 1 MΩ for voltage and 250 Ω for current, sampling/conversion speeds down to 1 ms per channel, and resolution around 1/4000 for voltage inputs. It draws modest power from the 24 VDC bus, includes RUN and status LEDs, and requires shielded twisted pair wiring for best accuracy in industrial environments. Confirm exact supported ranges with your regional datasheet variant before finalizing signal wiring.

Pros

• Per-channel voltage/current selection adds flexibility for mixed sensor types.
• Good resolution and fast conversion for typical process control applications.

Limitations

• Analog accuracy and exact ranges depend on SKU and firmware; always check the local datasheet.
• Requires careful wiring and shielding to meet stated accuracy; plan cable and grounding.

Typical use cases

• Reading 4–20 mA transmitters, thermocouples via signal converters, 0–10 V sensors, and small process loops feeding the PLC.