Table of Contents
Advertisement
Parameter description
P9.11
T
HERMAL PROTECTION OF THE MOTOR
0: No action
1: Warning
2: Fault
This is a software protection, based on time integral of current.
P9.12
M
OTOR AMBIENT TEMPERATURE
Change if environment is not standard.
P9.13
M
OTOR COOLING FACTOR AT ZERO SPEED
Defines the cooling factor at zero speed in relation to the point where the motor is running at
nominal speed without external cooling. See Figure 20.
The default value is set assuming that there is no external fan cooling the motor. If an external
fan is used this parameter can be set to 90% (or even higher).
Setting this parameter does not affect the maximum output current of the drive which is deter-
mined by parameter P1.5 alone.
The corner frequency for the thermal protection is 70% of the motor nominal frequency (P1.7).
Set 100% if the motor has independent fan or cooling. Set 30-40% if the fan is on motor shaft.
Par.
P9.13=40%
Service support: find your nearest Vacon service center at www.vacon.com
P
cooling
Overload area
100%
0
Figure 20. Motor thermal current I
f
Corner freq
n
curve.
T
vacon • 64
I
T
f
3
Advertisement
Table of Contents
