6.3. Power connection and wiring
CAUTION
The following installation recommendations are suitable for TN and TT grids. For IT grids check
the dedicated section. Otherwise, it could cause damage to the equipment and lead to injury to people.
Wiring and periodic inspections should be performed at least 10 minutes after disconnecting the
input power. To remove the front cover check that the DC Link red LED is off, then remove the
metallic cover and check with a multimeter the following measures:
• Measure between the output power busbars U, V, W and the cabinet and check that the voltage is
around 0V.
• Measure that the DC link terminals +, - and chassis voltage are below 30VDC.
Otherwise, you may get an electric shock.
The user input and output busbars are labelled according to the following diagram.
Figure 6.6 Power wiring connection for frames 1 and 2
Figure 6.7 Power wiring connection for frames 3 to 11
The input terminals L1, L2, L3 and PE (drive supply), and output terminals U, V, W and PE (motor supply)
must be introduced through the metallic panels situated in the bottom part of the cabinet. Do not drill or
mechanize the gratings. Otherwise, the drive could reduce its cooling capacity.
The front metal panel corresponds to the motor cables and the rear metal panel to the input cables; these
are not delivered drilled or pre-cut to fulfil worldwide configurations. Each cable must be equipped with its
own cable gland or grommet that prevent for dust or moisture penetration.
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