12.3.2.
Motor protection (thermal monitoring)
In order to protect against overheating and impermissibly high surface temperatures
at the actuator, PTC thermistors or thermoswitches are embedded in the motor
winding. Motor protection trips as soon as the max. permissible winding temperature
has been reached.
The actuator is switched off and the following signals are given:
●
LED 3 (motor protection trippped) on the local controls is illuminated.
●
The status indications
S0007
or
S0011 Failure
display a fault.
The fault
Details
is displayed when selecting
Thermal fault
.
The motor has to cool down before operation can be resumed.
Depending on the parameter setting (motor protection behaviour), the fault signal is
either automatically reset or the the fault signal has to be reset using RESET push
button with selector switch position Local operation (LOCAL).
78
SAV 07.2 – SAV 16.2 / SARV 07.2 – SARV 16.2 Control unit: electronic (MWG)
Corrective action
ACV 01.2 HART