Danfoss vlt aqua Programming Guide

[2] Thermistor trip Stops (trips) the frequency converter when the connected ther-
mistor in the motor reacts in the event of motor over-tempera-
ture.
The thermistor cut-out value is > 3 kΩ.
Integrate a thermistor (PTC sensor) in the motor for winding
protection.
Motor protection can be implemented using a range of techni-
ques: PTC sensor in motor windings; mechanical thermal switch
(Klixon type); or Electronic Thermal Relay (ETR).
Using a digital input and 24 V as power supply:
Example: The frequency converter trips when the motor tem-
perature is too high.
Parameter set-up:
Set Par. 1-90
Motor Thermal Protection to Thermistor Trip [2]
Set Par. 1-93
Thermistor Source to Digital Input 33 [6]
Using a digital input and 10 V as power supply:
Example: The frequency converter trips when the motor tem-
perature is too high.
Parameter set-up:
Set Par. 1-90
Motor Thermal Protection to Thermistor Trip [2]
Set Par. 1-93
Thermistor Source to Digital Input 33 [6]
2. Parameter Description VLT
®
AQUA Drive Programming Guide
54 MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled