Power Connections; Input Connections - WEG CFW-11 User Manual

Installation and Connection

3.2.3 Power Connections

3
R
S
T
Power
Supply

3.2.3.1 Input Connections

DANGER!
Provide a disconnect device for the input power supply of the inverter.
This device shall disconnect the input power supply for the inverter when needed (for instance, during
servicing).
DANGER!
Montez un dispositif de coupure sur l'alimentation du variateur.
Ce composant déconnecte l'alimentation du variateur si cela est nécessaire (ex. pendant l'entretien
et la maintenance).
ATTENTION!
A contactor or another device that frequently disconnects and reapplies the AC supply to the inverter
in order to start and stop the motor may cause damage to the inverter power section. The drive is
designed to use control signals for starting and stopping the motor. If used for that purpose, the input
device must not exceed one operation per minute otherwise the inverter may be damaged.
ATTENTION!
The power supply that feeds the inverter shall have a grounded neutral. In case of IT networks, follow
the instructions described in
3-16 | CFW-11
PE
PE
Fuses
Disconnect
Switch
Figure 3.13 - Power and grounding connections
Item 3.2.3.2.1 IT Networks on page
R S T U V W PE
Shielding
3-17.
PE W V U