Input Connections - WEG CFW-11 User Manual

Installation and Connection

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
3
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 Item 3.2.3.1.1 Power Supply Capacity on page 3-18.
NOTE!
The input power supply voltage shall be compatible with the inverter rated voltage.
NOTE!
Power factor correction capacitors are not needed at the inverter input (R, S, T) and shall not be
installed at the output of the inverter (U, V, W).
CFW-11 | 3-17