Product Description:

The X20ATC402 is a temperature acquisition module from B&R Automation's X20 Fieldbus Input Output Modules series. Installed on a remote I/O slice, it converts sensor signals into standardized digital values for the controller so that heating zones, cooling circuits, or energy-monitoring loops can react in real time. Within the wider X20 family, it occupies a single slot, and its design allows mixed signal types on one backplane without additional wiring work. This arrangement supports compact remote I/O stations where temperature channels must sit beside other process signals.

The module provides 6 thermocouple inputs that accept standard K, J, or T elements, enabling distributed measurement of burner tubes, molds, or process pipes. Two dedicated terminals accommodate 2x Pt1000 resistance sensors, which can be used for cold-junction compensation or for measuring local cabinet temperature. When the carrier is mounted horizontally, reliable operation is maintained up to 60 °C, which supports placement in fanless enclosures near heat sources. Cold-start capability extends down to -25 °C, allowing the station to power up in unconditioned warehouses or outdoor skids without preheating cycles.

Altitude tolerance reaches 2000 m, so the module can be installed in most upland plants without derating. The conformal-coated electronics withstand ambient moisture up to 95% RH non-condensing, helping preserve signal quality in humid areas. If the backplane is oriented vertically, the surrounding temperature must remain below 50 °C to protect long-term operating stability. Time stamping of each sample aligns automatically through the NetTime service, allowing millisecond-level correlation with distributed motion or safety events. Synchronized time data also helps the controller compare thermal changes across multiple stations without manual alignment of measurements.