Electrical Installation; Emc Information And Connection - BONFIGLIOLI Vectron ACTIVE CUBE Guia De Inicio Rapido

4

Electrical installation

DANGER
• The five safety rules must be complied with.
• Disconnect the frequency inverter from mains voltage (AC and DC) and protect it against being
energized unintentionally.
• Verify safe isolation from power supply.
When the frequency inverter is disconnected from power supply, the mains, DC-link voltage and
•
motor terminals may still be live for some time. Wait for some minutes until the DC link capaci-
tors have discharged before starting to work at the unit.
Sizes 1 through 7 (up to 132 kW): The DC-link may have dangerous voltage levels even up to 3
minutes after shutdown.
Size 8 (as from 160 kW): The DC-link may have dangerous voltage levels even up to 10 minutes
after shutdown.
• Switch off power supply before connecting or disconnecting the mains cables to/from termi-
nal X1, and the motor cables and braking resistor to X2.
NOTE
• The cables connected to the frequency inverters may not be subjected to high-voltage insulation
tests.
• Use copper cables designed for an ambient temperature of at least 30 °C.
In the case of UL/CSA installations: Only use 75°C copper cables.
• The earth leakage current of the frequency inverter may exceed AC 3.5 mA or DC 10 mA.
NOTE
• Please note (according to EN61800-5-1):
This product may cause direct current in the protective earth conductor. Where residual current
devices (RCD) or residual current monitors (RCM) are used as a protection against direct or indi-
rect contact, only RCDs / RCMs of Type B are permissible on the power supply side of this pro-
duct.
4.1

EMC information and connection

The frequency inverter is designed according to the requirements and limit values of product norm EN 61800-3
with an interference immunity factor (EMI) for operation in industrial applications. Electromagnetic interference is
to be avoided by expert installation and observation of the specific product information.
Measures
Install the frequency inverters and commutating chokes on a metal mounting panel. Ideally, the mounting panel
should be galvanized, not painted.
Provide proper equipotential bonding within the system or plant. Plant components such as electrical cabinets,
control panels, machine frames must be connected by means of PE cables, i.e. sufficient area and with good
conductivity.
The shield of the control cables is to be connected to ground potential properly, i.e. with good conductivity, on
both sides (shield clamp). Mount shield clamps for cable shields close to the unit.
Connect the frequency inverter, the commutating choke, external filters and other components to an earthing point
via short cables.
Excessive cable length and loosely suspended cabling must be avoided.
Contactors, relays and solenoids in the electrical cabinet are to be provided with suitable interference suppression
components.
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Quick Start Guide ACU 201, ACU 401, ACU 501, ACU 601
GB
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