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5.2.10.1 PTC Thermistor Connection
1330
550
250
-20°C
e7
5h
a1
83
.1
1
4000
3000
R
(W)
nominal
nominal -5°C
nominal + 5°C
[°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
.
PTC / Thermistor
R
OFF
ON
<800 #
+
1
0
V
e
3
0
b
a
1
5
2
.1
1
>2.7 k#
12 13
18
37
32
27
19
29
33 20
55
50
39 42
53 54
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
.
AU275636650261en-000101 / 130R0334 | 107
Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide