AUMA Electric multi-turn actuators SA 07.1 - 16.1_SAR 07.1 - 16.1 MATIC AM 01.1 - 02.1 - Manual (Page 54)

23.2 Motor protection
In order to protect against overheating and impermissibly high temperatures at
the actuator, PTC thermistors or thermoswitches are embedded in the motor
winding. The thermoswitch is tripped as soon as the max. permissible winding
temperature has been reached.
The actuator is stopped and the yellow indication light on the local controls is
illuminated.
The motor has to cool down before the operation can be resumed.
Version with thermoswitch (standard)
The actuator can be controlled again after the motor has cooled down.
As soon as the actuator receives a run command (OPEN - CLOSE), the fault
signal (yellow indication light) is no longer illuminated.
Version with thermoswitch and additional thermal overload relay within
the controls (option):
The operation can only be continued after the fault signal (yellow indication
light) has been reset. The fault signal is reset automatically via an overload relay
integrated in the actuator controls after the motor has cooled down.
Version with PTC thermistor (option)
The operation can only be continued after the fault signal (yellow indication
light) has been reset. The fault signal is reset via selector switch position
RESET (figure AQ) of the local controls.
54
Multi-turn actuators SA 07.1 – SA 30.1/ SAR 07.1 – SAR 30.1
with actuator controls AUMA MATIC AM 01.1 / AM 02.1
Operation instructions
Figure AQ: Selector switch RESET