Functions
7.5 Intrinsic device protection
SIRIUS 3RW50 soft starter
Manual, 09/2019, A5E35628455002A/RS-AA/001
129
7.5
Intrinsic device protection
Operating principle
The integrated intrinsic device protection protects the power semiconductors as well as the
bypass contacts against impermissible overload. If the internal warning limit is exceeded, a
message is output on the 3RW50 soft starter. If the internal fault threshold is exceeded, the
3RW50 soft starter will switch off automatically.
NOTICE
Property damage due to short circuits.
The intrinsic device protection system does not protect against irreparable equipment
damage caused by short circuits.
Connect semiconductor fuses upstream in order to protect the power semiconductors
against irreparable damage by short circuits (e.g. in case of cable damage or an interturn
fault in the motor).
Recovery time after device protection is triggered
If the 3RW50 soft starter shuts down because the motor overload protection or the intrinsic
device protection trips, you must wait a defined cooling time (recovery time) prior to
acknowledging the fault or restarting the motor.
●
In the event of power semiconductor overload: 30 s
●
In the case of bypass overload: 60 s
Содержание SIRIUS 3RW50
Страница 8: ...Table of contents SIRIUS 3RW50 soft starter 8 Manual 09 2019 A5E35628455002A RS AA 001 ...
Страница 38: ...Description 1 13 Support Request SIRIUS 3RW50 soft starter 38 Manual 09 2019 A5E35628455002A RS AA 001 ...
Страница 90: ...Connecting 4 11 COM connection cable SIRIUS 3RW50 soft starter 90 Manual 09 2019 A5E35628455002A RS AA 001 ...
Страница 160: ...Functions 7 12 3RW5 HMI High Feature SIRIUS 3RW50 soft starter 160 Manual 09 2019 A5E35628455002A RS AA 001 ...
Страница 184: ...Messages and diagnosis 8 11 Logbooks SIRIUS 3RW50 soft starter 184 Manual 09 2019 A5E35628455002A RS AA 001 ...
Страница 202: ...Circuit diagrams 12 1 CAx data SIRIUS 3RW50 soft starter 202 Manual 09 2019 A5E35628455002A RS AA 001 ...