Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 93

VLT® AutomationDrive EZ FC 321
Programming Guide
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PTC / Thermistor
Illustration 35: PTC Thermistor Connection - Digital Input
Using an analog input and 10 V as supply: Example: The drive trips when the motor temperature is too high.
Parameter set-up:
•
Set parameter 1-90 Motor Thermal Protection to [2] Thermistor Trip.
•
Set parameter 1-93 Thermistor Source to [2] Analog Input 54.
Illustration 36: PTC Thermistor Connection - Analog Input
Table 142: Threshold Cutout Values
Input digital/analog
Digital
Analog
Check that the selected supply voltage follows the specification of the used thermistor element.
Danfoss A/S © 2021.08
OFF
ON
R
<800 # >2.7 k#
Supply voltage
10 V
10 V
N O T I C E
Parameter Descriptions
Threshold cutout values
<800 Ω⇒2.7 kΩ
<3.0 kΩ⇒3.0 kΩ
AU373327181955en-000101 / 130R1208 | 93