Issue
Certain Xenta controllers and I/O modules support 10k thermistor temperature inputs. A common question arises regarding the specific type of 10k thermistor that is compatible—specifically, whether it should be Type 2 or Type 3.
Product Line
EcoStruxure Building Operation, TAC Vista
Environment
- Xenta 102-AX
- Xenta 420A, Xenta 450A
Cause
The Xenta 102-AX has always utilized 10k thermistors. More recently, some I/O modules and programmable controllers within the Xenta family (e.g., Xenta 420A and 450A) have also added support for 10k thermistor inputs.
However, confusion often arises due to terminology differences. The terms “10k Type 2” and “10k Type 3” are specific to the Continuum product line and are not applicable to Xenta controllers.
Resolution
The 10k thermistors compatible with Xenta 42XA and 45XA I/O modules are the same as those used in the I/NET product line. These thermistors follow the Vishay Dale Curve #1 specification.
For accurate configuration and calibration, refer to the Resistance vs. Temperature Conversion Tables provided in the linked PDF document below:
