10.3.2 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.The thermoswitch is tripped as soon as the max. permissible winding
temperature has been reached.
The actuator is switched off and the following signals are given:
●
LED 3 (thermal fault) on the local controls is illuminated.
●
Status indication S0007 displays a fault.The fault Thermoswitch is displayed
when selecting Details.
The motor has to cool down before the operation can be resumed. Depending on
the parameter setting, the fault signal is either automatically reset or the fault signal
has to be acknowledged.
The acknowledgement is made:
●
via the push button Reset in selector switch position LOCAL.
●
or with the reset command via fieldbus.
For further information to this topic, please refer to Manual (Operation and setting).
64
SGExC 05.1 – SGExC 12.1 Control unit: electromechanic
Corrective action ACExC 01.2 Intrusive Modbus RTU
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