Siemens S120 - Power Cables for Motors; Configuring the Cable Length

Cabinet design and EMC for components, Blocksize format
10.6 Connection Methods
AC Drive
Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
433
10.6.2
Power cables for motors
10.6.2.1
Configuring the cable length
Where a longer motor cable is required, a higher rating of Power Module must be selected or
the permissible continuous output current I
continuous
must be reduced in relation to the rated
output current I
rated
. The following configuration applies to Power Modules Blocksize:
Table 10- 10 Permissible cable lengths for shielded motor cables
PM340 Power Module
Length of the MOTION-CONNECT motor cable (shielded)
Rated
output current I
rated
> 50 … 100 m
> 100 … 150 m
> 150 … 200 m
>200 m
1.3 A
1.7 A
2.2 A
3.1 A
4.1 A
Not permissible Not permissible Not permissible Not permissible
5.9 A
7.7 A
I
max
≤ 1.1 × I
rated
I
continuous
≤ 0.6 × I
rated
Not permissible Not permissible Not permissible
10.2 A I
max
≤ 1.2 × I
rated
I
continuous
≤ 0.7 × I
rated
Not permissible Not permissible Not permissible
18 A I
max
≤ 1.2 × I
rated
I
continuous
≤ 0.7 × I
rated
I
max
≤ 0.7 × I
rated
I
continuous
≤ 0.45 × I
rated
Not permissible Not permissible
25 A
32 A
I
max
≤ 1.5 × I
rated
I
continuous
≤ 0.9 × I
rated
I
max
≤ 1.3 × I
rated
I
continuous
≤ 0.8 × I
rated
Not permissible Not permissible
38 A
45 A
60 A
I
max
≤ 1.6 × I
rated
I
continuous
≤ 0.95 × I
rated
1)
I
max
≤ 1.5 × I
rated
I
continuous
≤ 0.9 × I
rated
I
max
≤ 1.4 × I
rated
I
continuous
≤ 0.85 × I
rated
Not permissible
75 A
90 A
Always permissible I
max
≤ 1.6 × I
rated
I
continuous
≤ 0.95 × I
rated
I
max
≤ 1.5 × I
rated
I
continuous
≤ 0.9 × I
rated
Not permissible
110 A
145 A
178 A
Always permissible Not permissible Not permissible Not permissible
1)
Up to 70 m, always permissible
The permissible cable length for an unshielded motor cable is 150% of the length for a
shielded motor cable.
Motor reactors can also be installed in order to permit the use of longer motor cables.