Description
3.4 Operating principle
SIRIUS 3RW52 Soft Starter
Equipment Manual, 04/2020, A5E35630451002A/RS-AE/005
29
Functions
Note the information in chapter Firmware update (Page 22).
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Soft starting with parameterizable starting voltage and ramp up time for a smooth starting
of the drive
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Soft stopping with parameterizable stopping time for a smooth run-down of the drive
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Parameterizable current limit for avoiding current peaks
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Soft torque for smooth ramp up and run-down
(avoiding torque peaks by means of torque limitation)
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Integrated electronic motor overload protection with adjustable trip class
(Off, CLASS 10A, 10E, 20E)
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Intrinsic device protection protects the 3RW52 soft starter against overload
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Ramp-up detection
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Extended operating and diagnostic functions provided by the optional
3RW5 HMI Standard or 3RW5 HMI High Feature
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Connection to the motor in standard (inline) circuit or in inside-delta circuit
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Adjustable RESET MODE (Manual RESET, Remote RESET, Auto RESET) for the
functions of motor protection
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Extended full motor protection via optional thermistor motor protection for connection of a
temperature switch (e.g. Thermoclick) or a thermistor (e.g. PTC type A)
(alternative to analog output)
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Optional analog output for displaying a set measured value using an external evaluation
unit (alternative to the thermistor motor protection)
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Optional 3RW5 communication module for integration into bus systems
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Firmware updates upgrade the firmware of the respective device
Additional information
You will find an overview of all of the functions of the 3RW5 soft starter in the Catalog IC 10
(
https://support.industry.siemens.com/cs/ww/en/view/109747945
).
You will find further details of the functions in chapter Functions (Page 131).