Table of Contents
9-14
Application Notes
9.9
Motor Temperature Overview
Temperature measurement
1500
1400
1300
1200
1100
1000
900
800
700
600
500
10
20
In their standard configuration, stators of IndraDyn A motors are equipped
with built-in motor protection temperature sensors.
This sensor has a nearly linear characteristic curve (see Fig. 9-18).
Type
sensor
Resistor at 25°C
Resistor at 100°C
Continuous current at 100°C
Fig. 9-17:
Temperature measurement sensor
The activation temperatures set on the controller side for protection of the
motor are specified at:
⇒ 110°C pre-warning temperature
⇒ 120°C switch-off temperature
Exception:
• frame size MAD225 ⇒ 120°C pre-warning temperature
• frame size MAD225 ⇒ 130°C switch-off temperature
Note:
Ensure correct polarity when using the sensor for an external
temperature measurement.
30
40
50
60
70
motor winding temperature in °C
Fig. 9-18:
Characteristic of temperature measurement sensor KTY84-130
(PTC)
KTY84-130
577 Ohm
1000 Ohm
2 mA
temperature measuring sensor KTY84-130
connecting cores brown (+) und white (-)
80
90
100
110
120
Rexroth IndraDyn A
130
140
150
160
170
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
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