Siemens 7SR224 - Figure 3.9-1 Logic Diagram: Thermal Overload Protection (49 S)

(1) Description of Operation 7SR224
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which 100% of thermal capacity will be reached after a period of time and it is therefore normally set
slightly above the full load current of the protected device.
The thermal state may be reset from the fascia or externally via a binary input.
Thermal overload protection can be inhibited from:
Inhibit 49 A binary or virtual input.
IL1
49 Alarm
49 Trip
49 Time Constant
49 Capacity Alarm
49 Overload Setting
c
cap alarm
trip
IL2
IL3
cap alarm
trip
cap alarm
trip
Inhibit 49
49 Therm. Overload
Enabled
Disabled
&
1
1
Figure 3.9-1 Logic Diagram: Thermal Overload Protection (49S)