
6
Electrical installation
Installation planning taking EMC aspects into account
Manual – EtherCAT
®
Interfaces, Field Distributors
34
6.1.2
Data lines and 24 V supply
Route data lines and 24 V supply separately from cables that emit interference (such
as control lines of solenoid valves, motor cables).
6.1.3
Field distributor
We recommend using prefabricated SEW‑EURODRIVE hybrid cables for connecting
field distributors and motors.
6.1.4
Cable glands
Select only cable glands with a shield connected over a large area. Observe the notes
regarding the selection of the cable glands.
6.1.5
Cable shields
Observe the following points regarding cable shields:
•
Cable shields must have good EMC properties (high screening attenuation).
•
Cable shields must protect the cable mechanically and serve as shielding.
•
Cable shields must be connected at the cable ends via EMC metal cable glands to
a wide area of the device's metal housing. Also observe the further notes regard-
ing the selection of the cable glands.
Additional information is available in the document "Drive Engineering – Practical Im-
plementation – EMC in Drive Engineering."
6.1.6
Example for connection of the MF../MQ.. fieldbus interface and MOVIMOT
®
If the MF../MQ.. fieldbus interface and the
MOVIMOT
®
drive are installed separately,
the RS485 connection drive must be implemented as follows:
Carrying the DC 24 V supply
•
Use shielded cables.
•
Connect the shield to the housing of both units using EMC cable glands.
•
Twist the conductors in pairs as shown in the following figure.
RS+
RS-
24V
GND
RS+
GND
24V
RS-
1138904075
Without carrying the DC 24 V supply
If the
MOVIMOT
®
drive is supplied with DC 24 V via a separate connection, the RS485
connection must be carried out as follows:
•
Use shielded cables.
25809148/EN – 01/2019