Lenze ECSEKxxx - Manual (Page 50)

Electrical installation
Installation according to EMC (installation of a CE-typical drive system)
4

50 EDKCSEK002 DE/EN/FR 2.0
Shielding
ƒ Connect the motor cable shield to the axis module
– with the ECSZS000X0B shield mounting kit.
– extensively to the mounting plate below the axis module.
– Recommendation: For the shield connection, use earthing clamps on
bare metal mounting surfaces.
ƒ If contactors, motor protection switches or terminals are located in the
motor cable:
– Connect the shields of the connected cables to each other and connect
them 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
extensively to PE:
– Metal glands at the motor terminal box ensure an extensive connection
of the shield and the motor housing.
ƒ Shield UG cables and control cables from a length of 0.3 m:
– Connect both shields of the digital control cables.
– Connect one shield end of the analog control cables.
– Always connect the shields to the shield connection at the axis module
over the shortest possible distance.
ƒ Use of the ECS modules in residential areas:
– Additionally dampen the shield in order to limit the interfering
radiation:
≥
10 dB . This can be achieved by using standard, closed,
metallic, and earthed control cabinets or boxes.
Earthing
ƒ Earth all metallically conductive components (e.g. ECS modules, RFI filters,
motor filters, mains chokes) using suitable cables connected to a central
earthing point (PE rail).
ƒ Maintain the minimum cross-sections prescribed in the safety
regulations:
– For EMC not the cable cross-section is important, but the surface of the
cable and the contact with a cross-section as large as possible, i.e. large
surface.