4. Electrical Installation
Danger!
When the frequency inverter is disconnected from power supply, the mains,
DC- link voltage and output terminals may still be live for some time.
Wait for some minutes until the DC- link capacitors have discharged before
starting to work at the unit.
The unit may only be connected with the power supply switched off.
Make sure that the frequency inverter is discharged.
EMC information
The frequency inverters are designed for operation in industrial applications. Electromagnetic
interference can be avoided by the following precautions:
Install the frequency inverters and commutating chokes on a metal mounting
panel. Ideally, the mounting panel should be galvanized.
Provide proper equipotential bonding within the system or the plant.
Plant components such as control cabinets, control panels, machine frames, etc.
must be connected by means of PE cables.
Connect the frequency inverter, the commutating choke, external filters and other
components to on earthing point via short cables.
Keep the cables as short as possible and avoid sagging cables for installation.
Contactors, relays and solenoids in the electrical cabinet are to be provided with
suitable interference suppression components.
The mains connection cable must be installed separate from the control, data and
output cables.
Connect the shield of the output cables to ground potential properly on both sides
by using shield clamps.
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Quick Start Guide ACU-P
GB
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