Vacon 100 - Page 157

Table 64: Motor thermal protection settings
Index Parameter Min Max Unit Default ID Description
P3.9.2.1
Motor Thermal
Protection
0 3 2 704
0 = No action
1 = Alarm
2 = Fault (Stop
according to stop
mode)
3 = Fault (Stop by
coasting)
If you have a motor
thermistor, use it to
protect the motor. Set
the value to be 0.
P3.9.2.2
Ambient
Temperature
-20.0 100.0 °C 40.0 705
The ambient
temperature in °C.
P3.9.2.3
Zero Speed Cooling
Factor
5.0 150.0 % Varies 706
Gives the cooling factor
at zero speed in
relation to the point
where the motor
operates at nominal
speed without an
external cooling.
P3.9.2.4
Motor Thermal Time
Constant
1 200 min Varies 707
The time constant is
the time within which
the calculated thermal
stage has reached 63%
of its final value.
P3.9.2.5
Motor Thermal
Loadability
10 150 % 100 708
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