Lenze 9400 Manual - Manual (Page 228)

Power supply modules
Rated data (devices for 400/500V mains)
Mains filters for power supply modules
6

228 EDS94SPP101 EN 7.1
With different motor cable lengths, per axis at least 25 % of the longest cable must be
considered when calculating the total motor cable length.
Example: 1 Motor cable length l
mot
[m]
Axis Actual
value
min. 25 % of the longest cable To be considered
1 6
0.25 * 20 = 5
6
2 ... 4 3 * 10 3 * 10
5 20 Õ 20
Total 56 max. permissible for 5 axes: ∑< 60 56
EMC class C2 will be complied with. ;
Example: 2 Motor cable length l
mot
[m]
Axis Actual
value
min. 25 % of the longest cable To be considered
1 ... 4 4 * 5 0.25 * 40 = 10 4 * 10
5 40 Õ 20
Total 60 max. permissible for 5 axes: ∑< 60 80
EMC class C2 will not be complied with. :
Other interference factors
Compliance of EMC class C2 may also be interfered with by other factors:
ƒ
Distribution of axis modules over several control cabinets
ƒ
No use of Lenze system cables or cables with the same specifications
ƒ Poor connection of motor cable shields
ƒ Motor cable interruptions
ƒ Other interference sources (e.g. switched-mode power supplies)
ƒ Synchronous switching of limit switches