Eaton HFX Series - Thermistor; Frequency Configuration

EATON HFX Product Family Installation and Operation Manual E-ELCL-II002-E2 July 2019 29
16.1 Thermistor
We use 22 kΩ Pull-up resistors in this mode and therefore recommend that you use resistances in the
range of 10 kΩ and 50 kΩ for optimal performance. The defaults shown above were derived from measuring
an actual 100 kΩ thermistor.
Thermistor example of actual readings per channel.
Input
Channel 0 ohm 100 ohm 1 kohm 10 kohm 20 kohm 50 kohm
1 10.8 113.8 1010.9 10088.8 20350.0 52347.0
2 10.2 108.5 1007.0 10089.2 20350.0 52438.0
3 6.8 108.5 1005.2 10089.2 20350.0 52418.0
4 8.8 108.5 1005.0 10074.8 20330.0 52346.0
5 5.4 108.3 1005.0 10066.0 20309.7 52283.0
6 10.8 108.5 1005.0 10066.0 20309.7 52346.0
7 X 103.0 999.1 10043.0 20269.8 52210.0
8 X 103.0 999.1 10031.3 20239.8 52094.0
9 0 99.5 993.2 10019.8 20228.7 52068.0
10 5.4 108.5 1005.0 10066.0 20309.7 52336.0
11 0 98.6 993.2 10006.0 20188.3 51969.0
12 0 102.5 999.1 10054.5 20289.4 52220.0
13 5.8 108.5 1005.0 10054.5 20289.4 52283.0
14 5.4 105.8 1005.0 10066.0 20309.7 52283.0
15 6.8 108.5 1005.0 10077.6 20330.0 52400.0
16 6.4 108.5 1005.0 10077.8 20331.0 52408.0
16.2 Frequency Conguration
Figure 3: Frequency/Digital Input I/O Mapping Tab.
The tab displays the following: Selected Input,
Variable, Address, Type, and Description. The tab
also has predened measurements of Voltage,
Duty Cycle, Phase Angle, Pulse Count, Frequency,
and Digital Value.
Variables:
• digitalInVoltage#: This is the voltage present at the
input pin.
• digitalInDutyCycle#: This is the measured duty
cycle at the input pin.
• digitalInPhaseAngle#: This is the phase angle
relative to the channel pair dened in the
conguration
• digitalInPulseCount#: This is a rolling pulse counter.
• digitalInFrequency#: This is the measured
frequency of the input waveform.
• digitalInValue#: This is the digital value after
debounce and rising/falling voltage thresholds are
applied.
HFX Product Family