Danfoss VLT FC 100 Series Programming Manual page 48

3. Parameter Description
3
[3] ETR warning 1
*
ETR trip 1
[4]
[5] ETR warning 2
[6] ETR trip 2
[7] ETR warning 3
48
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
Thermistor Source Analog Input 54
Set Par. 1-93 to
Do not select a reference source.
Input Supply Voltage
Digital/analog Volt
Digital 24 V
Digital 10 V
Analog 10 V
NB!
Check that the chosen supply voltage follows the specification of the used thermistor element.
ETR Warning 1-4 , activate a warning on the display when the motor is overloaded.
ETR Trip 1-4
trip the frequency converter when the motor is overloaded.
Programme a warning signal via one of the digital outputs. The signal appears in the event of a warning and if
the frequency converter trips (thermal warning).
See [3]
See [4]
See [3]
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Programming Guide
to Thermistor Trip [2]
[2]
Threshold
Cut-out Values
< 6.6 kΩ - > 10.8 kΩ
< 800Ω - > 2.7 kΩ
< 3.0 kΩ - > 3.0 kΩ