Lenze ECSxK series Manual de usuario descargar pdf (Pagina 27)

Electrical installation

Installation of a DC-typical drive system



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 s urfaces.

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.

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Lenze ECSxK series Manual de usuario Pagina 27