Danfoss VLT AutomationDrive FC 300 Programming Guide

Using an analog input and 10 V as power supply:
Example: The frequency converter trips when the motor temperature is too high.
Parameter set-up:
Set par. 1-90
Motor Thermal Protection to Thermistor Trip [2]
Set par. 1-93
Thermistor Source to Analog Input 54 [2]
Input
Digital/analog
Supply Voltage
Volt
Threshold
Cut-out Values
Digital 24 V < 6.6 kΩ - > 10.8 kΩ
Digital 10 V < 800Ω - > 2.7 kΩ
Analog 10 V
< 3.0 kΩ - > 3.0 kΩ
NB!
Check that the chosen supply voltage follows the specification of the used thermistor element.
1-93 Thermistor Source
Option: Function:
Select the input to which the thermistor (PTC sensor) should be connected. An analog input option
[1] or [2] cannot be selected if the analog input is already in use as a reference source (selected in
par. 3-15
Reference 1 Source , par. 3-16 Reference 2 Source or par. 3-17 Reference 3 Source ).
When using MCB 112, choice [0]
None must always be selected.
[0] * None
[1] Analog input 53
[2] Analog input 54
[3] Digital input 18
[4] Digital input 19
[5] Digital input 32
[6] Digital input 33
NB!
This parameter cannot be adjusted while the motor is running.
NB!
Digital input should be set to [0]
PNP - Active at 24V in par. 5-00.
3 Parameter descriptions FC 300 Programming Guide
62 MG.33.M8.02 - VLT
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is a registered Danfoss trademark
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English