Wiring; Design Of The Cables; How To Connect The Shield - Lenze L−force 9400 Série Instructions De Montage

5.3

Wiring

5.3.1

Design of the cables

The cables used must comply with the approvals required for the location
ƒ
(e.g. UL).
It is imperative to comply with the regulations concerning minimum
ƒ
cross−sections of PE conductors. The cross−section of the PE conductor
must be at least as large as the cross−section of the power connections.
The effectiveness of a shielded cable is reached by:
ƒ
–
Providing a good shield connection through large−surface shield
contact.
–
Using only braided shields with low shield resistance made of tin−plated
or nickel−plated copper braid.
–
Using braided shields with an overlap rate > 70 % and an overlap angle
of 90 °.
–
Keeping unshielded cable ends as short as possible.
Use system cables or shielded cables for these connections:
Motor
ƒ
Motor holding brake (shielding is required when being integrated into the
ƒ
motor cable; connection to optional motor brake control)
Motor temperature monitoring
ƒ
External brake resistor (, Mounting Instructions of the brake resistor)
ƒ
The following connections need not be shielded:
Mains
ƒ
DC bus, cable length up to 0.3 m
ƒ
5.3.2

How to connect the shield

Fig. 5−2 Connect the shield to the shield sheet (graphics on the right: motor cable for device sizes
II and III)
EDK94ZPS113 DE/EN/FR/ES/IT 6.0
Electrical installation
l
Wiring
Design of the cables
5
E94AZPS004
49