22
3.5 Connection of the
Control Lines
Notes:
•
Connect the screen schiene with the stripped mounting plate covering as much
space as possible and do not use as strain relief.
•
The shield from the digital signal lines, which is not connected via terminals,
must be clamped to the screen bus, both at the cabinet entrance and near the
inverter, in order to decrease the screen impedance.
•
If digital signal lines are connected via terminals, the screen must be clamped to
the screen bus before and after the terminals.
•
If a screen bus is used near the inverter (max 20 cm distance), then the screen
no longer needs to be connected to the inverter.
•
If the shield is earthed with a single charger, then the interference derivation
deteriorates by 70%.
•
Metal copper pipe clips are suitable as a shield connection.
•
When using non-shielded signal lines, they should always be installed as a twisted
pair with a forward and return circuit.
CE marked frequency inverter and servo drives were developed and manufactured
to comply with the regulations of the Low-Voltage Directive 73/23/EEC.
The applied standards are listed in the technical documentation part 2.
A manufacturer declaration in accordance with 89/392/EEC can be provided by KEB
if needed.
4. CE-Marking
5. Manufacturer´s
Declaration
Line from
encoder
Analog
line
Non-shielded
control signal
Data line
