Siemens SIRIUS 3RW40, Manual

Page: 81 / 212

CAUTION
Configuration
11.6 Calculating the permissible switching frequency
SIRIUS 3RW30 / 3RW40
Manual, 01/2010, 535 1995-02 DS01
81
taken into account when the device is dimensioned (refer to chapter Technical data [Page
121]).
Mounting position, assembly type
The mounting position and assembly type (refer to chapter Installing the soft starter [Page
53]) can influence the soft starter's permissible switching frequency. Refer to chapter
Calculating the permissible switching frequency [Page 81] for the permissible mounting and
assembly combinations as well as the resulting factors for the soft starter switching
frequencies.
11.6 Calculating the permissible switching frequency
11.6.1 Table of permissible assembly combinations with switching frequency factors
The factors indicated in the table refer to the switching frequency (starts / hour) as specified in
chapter Technical data [Page 121].
Risk of property damage.
The soft starter may be damaged if the maximum installation altitude (5000 m above sea
level) or an ambient temperature of 60 °C is ignored.
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