Lenze i550 Series - Motor Connection

Motor connecon
Switching in the motor cable
Switching on the motor side of the inverter is permissible:
For safety shutdown (emergency stop).
In case several motors are driven by one inverter (only in V/f operang mode).
Please note the following:
The switching elements on the motor side must be dimensioned for with the
maximum occurring load.
Motor cable lengths
•
The rated data for the motor cable length must be observed.
•
Keep the motor cable as short as possible as this has a posive eect on the drive behav-
iour and the EMC.
•
Several motors connected to an inverter form a group drive.
In case of group drives, the resulng motor cable length l
res
is relevant:
l
res
[m] = (l
1
+ l
2
+ l
3
... l
i
) ∙ √i
l
res
Resulng length of the motor cables
l
x
Length of the single motor cable
i Number of the single motor cables
Shielding
A good shield connecon and short cable lengths reduce possible interferences caused by
problems with the EMC.
Example for preparing the EMC-compliant wiring or the motor cable
l
①
②
③
Fig. 10: Shield connecon
① Braid
② large surface contacng of the braid
③ Heat-shrinkable tube
l maximally 500 mm
Informaon on electrical installaon
Motor connecon
57