Lenze ECSxK series - Manual (Page 27)

Electrical installation
Installation of a DC-typical drive system
5

27 EDBCSXKXXX EN 1.0
Filtering
ƒ Use RFI filters and mains chokes which are assigned to the power supply modules:
– RFI filters reduce impermissible high-frequency interferences to a permissible
value.
– Mains chokes reduce low-frequency interferences which depend on the motor
cable and its length.
Shielding
ƒ Connect the motor cable shield to the axis module
– with the EMC accessories ECSZS000X0B.
– to the mounting plate below the axis module with a large surface.
– Recommendation: For the shield connection, use earthing clamps on bare metal
mounting surfaces.
ƒ If contactors, motor-protecting switches or terminals are located in the motor cable:
– Connect the shields of the connected cables to the mounting plate, too, with a
surface as large as possible.
ƒ Connect the shield in the motor terminal box or on the motor housing to PE:
– Metal glands at the motor terminal box ensure a connection of the shield and the
motor housing.
ƒ Shield the control cables:
– Connect both shields of the digital control cables.
– Connect one shields of the analog control cables.
– Always connect the shields to the shield connection at the controller over the
shortest possible distance.
ƒ Using the axis modules in residential areas:
– Additionally dampen the shield in order to limit the interfering radiation: ≥ 10 dB .
This can be realised by using standard, closed, metallic, and earthed control
cabinets or boxes.
Earthing
ƒ Earth all metallically conductive components (power supply module, capacitor
module, axis module, RFI filter, motor filter, mains choke) using suitable cables
connected to a central point (PE bar).
ƒ Maintain the minimum cross-sections prescribed in the safety regulations:
– For the EMC, not the cable cross-section is important, but the surface and the
contact with a cross-section as large as possible, i.e. large surface.
Show/Hide Bookmarks