Installation
11
Installation
What this chapter contains
This chapter contains general note and restrictions to be considered in the
installation, and shows the connections diagrams.
General notes and restrictions
WARNING! Do not attempt any work on a powered drive. After switching off the
mains, always allow the intermediate circuit capacitors 5 minutes to discharge before
working on the frequency converter, the motor or the motor cable. Check (with a
voltage indicating instrument) that the drive is in fact discharged before beginning
work.
• Encase the non-enclosed (IP00) filters to meet the safety requirements (for
cabinet installation solely).
• Beware of hot surfaces. The surface of the IP22/IP54 filter housing can reach a
temperature up to 40 °C higher than the ambient temperature.
• Use shielded cable between enclosures.
• Mount the filter on a mounting structure that is of non-flammable material and
strong enough to carry the weight of the filter.
• Ground the filter to the protective earth (PE) terminal of the cabinet. No separate
grounding conductor is needed if there is proper galvanic connection through the
filter fixing screws and the mounting plate.
• Maximum allowed drive output frequency: 120 Hz
• Maximum allowed average switching frequency:
3 kHz (converter units with supply voltage <
500 V) or
2 kHz (converter units with supply voltage > 500 V)
Change the switching frequency with a drive parameter. If there is no such
parameter in the drive sw, apply the settings to be used with long motor cables.
For example, for the ACS850 drive, set parameter 40.01 Motor noise to value
Default.
• Maximum cable length between the drive output and the filter: 3 m
• Maximum motor cable length for AOCH0xxx-70 filters: 300 m (cumulative for
several parallel-connected motors)
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