Power Cables For Motors; Configuring The Cable Length - Siemens Sinamics S120 Manual

Cabinet design and EMC Booksize
12.8 Connection systems
12.8.2

Power cables for motors

12.8.2.1

Configuring the cable length

Where a long motor cable is required, a higher rating of Motor Module must be selected or
the permissible continuous output current I
output current I
following table:
Table 12- 16 Permissible cable lengths for shielded motor cables
Motor Module
Rated
output current I
N
3 A/5 A
9 A
18 A
30 A
45 A/60 A
85 A/132 A
200 A
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.
738
. The configuring data for booksize format Motor Modules are given in the
rated
Length of motor cable (shielded)
> 50 ... 100 m
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 rated
Always permitted
Always permitted
Always permitted
Always permitted
continuous
> 100 ... 150 m > 150 ... 200 m
Use 9 A Not permissible
Motor Module
Use 18 A Not permissible
Motor Module
Use 30 A Not permissible
Motor Module
I ≤ 1.35 × I I
max rated
I ≤ 0.9 × I I
continuous rated
I ≤ 1.75 × I I
max rated
I ≤ 0.9 × I I
continuous rated
I ≤ 1.35 × I I
max rated
I ≤ 0.95 × I I
continuous rated
I ≤ 1.25 × I I
max rated
I ≤ 0.95 × I I
continuous rated
must be reduced in relation to the rated
> 200 m
Not permissible
Not permissible
Not permissible
≤ 1.1 × I Not permissible
max rated
≤ 0.85 × I
continuous rated
≤ 1.5 × I Not permissible
max rated
≤ 0.85 × I
continuous rated
≤ 1.1 × I Not permissible
max rated
≤ 0.9 × I
continuous rated
≤ 1.1 × I Not permissible
max rated
≤ 0.9 × I
continuous rated
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
Booksize Power Units