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A.2.7
Connecting the temperature sensor
Requirements
Procedure
1. Remove the copper link between terminals and T11 / T21 and T22.
2. Connect the temperature sensor:
Result
The 3RW52 soft starter monitors the motor for excessive temperature. The motor is shut
down if the maximum temperature limit is exceeded. The setting for RESET MODE
(Page 105) determines how the motor is restarted.
SIRIUS 3RW52 Soft Starter
Equipment Manual, 04/2020, A5E35630451002A/RS-AE/005
3RW52 soft starter with thermistor motor protection
Motor with temperature switch (e.g. Thermoclick) or thermistor (e.g. PTC type A)
Temperature switch at terminals T21-T22
Example circuits
A.2 Control circuit connection
Thermistor at terminals T11-T12
231
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