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

10.6.2

Power cables for motors

10.6.2.1

Configuring the cable length

The ohmic losses of the motor cable must be less than 5 % of the Power Module power
rating.
Table 10- 10 Maximum cable lengths for Power Modules in the blocksize format
Frame size
FSA - FSC 200 V/400 V
FSD - FSE 200 V/400 V
FSF 200 V/400 V
A cable length up to 150 m is possible for C2 if you use an unfiltered Power Module with an external line filter for
1)
Category C2 and a motor reactor.
Also observe the restrictions for 6SL3210-1PE27-5UL0 and 6SL3210-1PE31-1UL0 Power Modules
2)
● Motor cable length, 50 to 100 m: Set the pulse frequency to 2 kHz.
● Motor cable length > 100 m: Reduce the base load current for each 10 m by 1 %.
Table 10- 11 Maximum cable lengths for Power Modules in the chassis format
Frame size
FX - GX
AC Drive
Manual, (GH6), 07/2016, 6SL3097-4AL00-0BP5
Power Modules without filter
shielded
50 m
200 m
2)
690 V 200 m
300 m
690 V 300 m
Power Modules without filter
shielded
400 V 300 m
Cabinet design and EMC for components, Blocksize format
Power Modules with filter to maintain the
unshielded
100 m
300 m
300 m
450 m
450 m
Power Modules with filter to maintain the
unshielded
450 m
10.6 Connection Methods
limit values of EN 61800-3 Category
C2/C3
shielded unshielded
50 m (C2)
1)
150 m (C2)
100 m (C2)
150 m (C2)
150 m (C3)
limit values of EN 61800-3 Category
C2/C3
shielded unshielded
100 m (C2)
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