4.2.1 Motor protection
The units do not have a
full
motor protection.
For monitoring the motor temperature
PTCs
orthermal contacts
tan
be used.
The connection possibilities are shown on page 28.
When using group drives, a motor protection relay is required for
each
motor.
When using motors which do not have a suitable insulation for
controller Operation:
-
Connect motor filters for protection (see page 45).
Please contact your motor manufacturer.
Please note:
These frequency controllers generate an output frequency of up to
480 Hz when set correspondingly. The connection of a motor which
is not suitable for this frequency may result in a hazardous
overspeed.
4.2.2 Installation in compliance with EMC
l Lenze has built up typical drives with these controllers and has
verified the conformity. In the following this
System
is called
“CE-typical drive system”.
If
you observe the
pat-tially
easy measures for the
installation
of
CE-typical drive
System,
the controller will not
Cause
any EMC
Problems
and you
tan
be sure to comply with the EMC
Directive.
l The following configurations
tan
now be selected by the
User:
-
The user himself
tan
determine the
System
components and
their integration into the drive
System
and is then held
responsible for the conformity of the drive.
-
The user
tan
select the CE-typical drive
System
for which
the manufacturer has already proved the conformity.
For deviating installations, e.g.
-
use of unscreened cables,
-
use of group filters instead of the assigned RFI filters,
-
without mains
Choke
the conformity to the CE-EMC Directives requires a check of the
machine
or
System
regarding the EMC limit values.
The user of the machine is responsible for the compliance
with the EMC
Directive.
-
_-
24
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