8 | Connection STOBER
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03/2020 | ID 442793.03
8.3.4 EMC recommendations
Information
This chapter provides general information on EMC-compliant installation. These are recommendations. Depending on the
application, the ambient conditions as well as the legal requirements, measures beyond these recommendations may be
required.
Lay the power line, power cable and signal lines separately from each other, e.g. in separate cable ducts.
Only use shielded, low-capacitance cables as power cables.
If the brake line is carried in the power cable, it must be shielded separately. Also close the brake lines on the drive
controller if you are using a motor without a brake.
Connect the shield of the power cable over a wide area and in the immediate vicinity of the drive controller. To do this, use
the shield clamp and shield contact at terminal X20.
The connection lines for braking resistors as well as the conductors of the Quick DC-Link modules have to be implemented
as twisted pairs. At line lengths of 30cm or more, the lines also have to be implemented with shielding and the shield must
be applied over a wide area in the immediate vicinity of the drive controller.
For motors with terminal boxes, connect the shield to the terminal box over large contact areas. For example, use
EMC cable screw connections.
Connect the shield of the control lines on one side to the reference ground of the source, e.g. the PLC or CNC.
You may use chokes to improve the EMC and protect the drive system. Output chokes reduce current peaks caused by line
capacity at the power output of the drive controller.
ATTENTION!
Material damage due to incorrect or uncontrolled movement!
When connecting Lean motors in combination with an output choke, a successful position and speed determination is not
ensured. This can lead to an incorrect or uncontrolled movement right from the start.
▪ If Lean motors are connected, output chokes must not be used.
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