Connection System; Configuring The Cable Length - Siemens Sinamics S120 Manual

Cabinet design

6.6 Connection system

6.6 Connection system
Note
Information about the connection system and cables
For detailed information about the connection system and cables, please refer to the
SINAMICS S120 Manual "Booksize Power Units" (GH2).
6.6.1

Configuring the cable length

Where a longer motor cable is required, a higher rating Motor Module must be selected, or
the permissible continuous output current I
output current I
following table:
Table 6- 2
Motor Module
Rated
output current I
3 A / 5 A
9 A
18 A
30 A
It is not permissible to use shielded motor cables that are longer than 200 m.
When using a motor holding brake, the maximum motor cable length is 100 m.
The permissible cable length for an unshielded motor cable is 150 % of the length for a
shielded motor cable.
Motor reactors can also be used on motors operating in vector and V/f control modes to
allow the use of longer motor cables.
102
. The configuring data for booksize format Motor Modules are given in the
rated
Permissible cable lengths for shielded motor cables
Length of motor cable (shielded)
> 50 ... 100 m
N
Use 9 A
Motor Module
Use 18 A
Motor Module
Use 30 A
Motor Module
or
I ≤ 1.5 × I
max rated
I ≤ 0.95 × I
continuous
Always permitted
must be reduced in relation to the rated
continuous
> 100 ... 150 m
Use 9 A
Motor Module
Use 18 A
Motor Module
Use 30 A
Motor Module
rated
I ≤ 1.35 × I
max rated
I ≤ 0.9 × I
continuous rated
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1
> 150 ... 200 m
Not permissible
Not permissible
Not permissible
I ≤ 1.1 × I
max rated
I ≤ 0.85 × I
continuous rated