Table 3-21 Thermal Classes - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/03
5 V
ADC
PTC
KTY
Fig. 3-69
Temperature rise classes
In drive technology, temperature rise issues play a decisive role when
dimensioning electrical machinery. Different temperature limits apply for the various
materials used in electric motors. Depending on the insulating material being used,
a differentiation is made according to thermal classes (refer to the motor rating
plate) with defined limit temperatures. An excerpt from IEC85 is provided in Table
3-21.
Thermal Class
Y
A
E
B
H
Table 3-21
For the temperature model or the KTY84 sensor, the appropriate value ϑ
be calculated and entered into parameter P0604 (temperature warning threshold,
default: 130°C). The following applies:
P0604
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
Fault
F0015
T = 4 s
1
Signal
loss
detection
P0601
Equivalent
circuit data
Power dissipation
P
V,mot
Thermal motor protection
Excerpt from IEC 85
Max.perm.temperature
90 °C
105 °C
120 °C
130 °C
F 155 °C
180 °C
Thermal classes
ϑ
trip
= ϑ =
warn
1 1 .
P0601 = 2
&
No sensor
0
PTC
1
KTY
2
?
V
Thermal
r0631
motor
r0632
model
r0633
3 Functions
r0052
Bit13
Motor
1
i2t
≥
1
0
temp.
reaction
r0035
1
P0610
0
P0604
must
warn
159