Input Connections - WEG CFW11W G2 Series User Manual

Installation and Connection
DC Power
Supply
DC+
3
U
Grounding
busbar
L
Phase U
Phase V
Phase W

3.2.6 Input Connections

DANGER!
Provide a disconnector device for the inverter power supply. This device must cut off the inverter
power supply whenever necessary (during maintenance for instance).
ATTENTION!
Using a contactor or another device that disconnects the inverter power supply to often start and
stop the motor may damage the inverter power supply circuit. The inverter is designed to use control
signals to start and stop the motor. If used, the device on the input cannot exceed one operation
every five minutes or the inverter may be damaged.
ATTENTION!
The supply voltage must not exceed the inverter rated values (see
The interconnection between the DC link and each UP11W G2 can be made with flexible braids as in the example
of Figure 3.29 on page
3.30 on page 3-25
3-24 | CFW-11W G2
DC- DC+ DC- DC+ DC-
W U W U W
L L L
L
L L L
L L L L
Figure 3.28: Recommended distribution for the motor cables
3-25, sized to withstand the DC link current, according to
shows an example of flexible braid used by WEG, using a fuse on DC+ and another on DC-.
Paralleling
busbar
W U
PE
Table 8.1 on page 8-2).
Table 8.1 on page 8-2. Figure