Siemens SIRIUS 3RW30 - Optimized Setting Ranges for Current Limiting

Commissioning
13.2 Commissioning the 3RW40
SIRIUS 3RW30 / 3RW40
116 Manual, 10/2018, NEB535199502000/RS-AB/005
13.2.9
Optimized setting ranges for current limiting
Example of optimized current limiting setting ranges for the 3RW40 soft starters
①
I
limiting
=
②
I
e
motor
③
I
e
3RW
Figure 13-1 Optimized current limiting setting ranges
Example of calculating the current limiting
Up to product version E06 (for 3RW40 size
S0, S2, S3) or up to product version E10
(for 3RW40 size S6 and S12)
Product version E07 and higher (for 3RW40
size S0, S2, S3) or product version E11
and higher (for 3RW40 size S6 and S12)
I
e motor
= 60 A
I
e motor
= 60 A
I
e 3RW
= 72 A
I
e 3RW
= 72 A
I
limiting
= 1 ... 5 x I
e motor
I
limiting
= 1 ... 5 x I
e motor
I
max
= 5 x I
e motor
= 300 A
I
max
= 5 x I
e 3RW
= 360 A
For setting values, see Optimized setting ranges for current limiting (Page 116).