Ptc Thermistor Connection - Danfoss VLT AutomationDrive FC 301 Programming Manual

VLT AutomationDrive FC 301/302
Programming Guide

5.2.10.1 PTC Thermistor Connection

R
(W)
4000
3000
1330
550
250
-20°C
Illustration 39: PTC Profile
Using a digital input and 10 V as supply: Example: The drive trips when the motor temperature is too high.
Parameter setup:
•
Set parameter 1-90 Motor Thermal Protection to [2] Thermistor Trip.
•
Set parameter 1-93 Thermistor Source to [6] Digital Input.
39 42 50 53 54 55
12 13 18 19 27 29 32 33 20 37
PTC / Thermistor
Illustration 40: 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 setup:
•
Set parameter 1-90 Motor Thermal Protection to [2] Thermistor Trip.
• Set parameter 1-93 Thermistor Source to [2] Analog Input 54.
Danfoss A/S © 2022.12
nominal -5°C
nominal + 5°C
nominal
OFF
ON
<800 # >2.7 k#
[°C ]
R
Parameter Descriptions
AU275636650261en-000101 / 130R0334 | 107