•
•
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 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
.
e
3
0
b
a
1
5
3
.1
1
Illustration 36: PTC Thermistor Connection - Analog Input
Table 142: Threshold Cutout Values
Input digital/analog
Supply voltage
Threshold cutout values
Digital
10 V
<800 Ω
⇒
2.7 kΩ
Analog
10 V
<3.0 kΩ
⇒
3.0 kΩ
N O T I C E
Check that the selected supply voltage follows the specification of the used thermistor element.
AU373327181955en-000101 / 130R1208 | 93
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
