Lenze i550 - Page 127

Motor
connecon
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. 8: Shield connecon
① Braid
②
large surface contacng of the braid
③ Heat-shrinkable tube
l maximally 500 mm
Switching in the motor cable
Switching on the motor side of the inverter is permissible:
F
or 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.
Connecon of motor temperature monitoring
If the terminal X109 is used, e. g. to connect an external PTC thermistor (PTC) or
a thermal c
ontact, ensure at least one basic insulaon to the potenals of
motor, mains and control terminals to not restrict the protecve separaon of
the control terminals.
Mounng/
installaon
Electrical installaon
Motor connecon
127