Siemens SINAMICS S120 User Manual

Cabinet design and EMC Booksize
12.7 Connection systems
Booksize Power Units
712 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
12.7.2
Power cables for motors
12.7.2.1
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
continuous
must be reduced in relation to the rated
output current I
rated
. The configuring data for booksize format Motor Modules are given in the
following table:
Table 12- 15 Permissible cable lengths for shielded motor cables
Motor Module
Length of motor cable (shielded)
Rated
output current I
N
> 50 … 100 m
> 100 … 150 m
> 150 … 200 m
> 200 m
3 A/5 A Use 9 A
Motor Module
Use 9 A
Motor Module
Not permissible Not permissible
9 A Use 18 A
Motor Module
Use 18 A
Motor Module
Not permissible Not permissible
18 A Use 30 A
Motor Module
or
I
max
≤ 1.5 × I
rated
I
continuous
≤ 0.95 × I
rated
Use 30 A
Motor Module
Not permissible Not permissible
30 A Always permitted I
max
≤ 1.35 × I
rated
I
continuous
≤ 0.9 × I
rated
I
max
≤ 1.1 × I
rated
I
continuous
≤ 0.85 × I
rated
Not permissible
45 A/60 A Always permitted I
max
≤ 1.75 × I
rated
I
continuous
≤ 0.9 × I
rated
I
max
≤ 1.5 × I
rated
I
continuous
≤ 0.85 × I
rated
Not permissible
85 A/132 A Always permitted I
max
≤ 1.35 × I
rated
I
continuous
≤ 0.95 × I
rated
I
max
≤ 1.1 × I
rated
I
continuous
≤ 0.9 × I
rated
Not permissible
200 A Always permitted I
max
≤ 1.25 × I
rated
I
continuous
≤ 0.95 × I
rated
I
max
≤ 1.1 × I
rated
I
continuous
≤ 0.9 × I
rated
Not permissible
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.

Siemens SINAMICS S120 Specifications

General

Brand	Siemens
Model	SINAMICS S120
Category	DC Drives
Language	English