WEG CFW-09HD Series, Manual, Page: 5 / 8

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3.1 POWER WIRING AND FUSES
The pre-charge relay connections are shown in greater detail in figure 4.
The internal pre-charge auxiliary contactor of the CFW-09HD is started by the external auxiliary
contactor and supplied internally in 220V. This 220V supply is galvanically isolated and also serves
to supply the fans. As the internal transformer is not dimensioned to supply another load, it is
necessary to use another external isolated 220V power supply to command the main contactor and
the external auxiliary contactor.
Figure 4 – Pre-charge command connections (XC1A Connector of the CC9)
NOTE!
If the internal pre-charge is used, and consequently the connection described in figure 4, parameter
P277 must be programmed as pre-charge (P277=24).
CT – Constant Torque
VT – Variable Torque
For interlocking with a contactor winding or
circuit breaker minimum winding
21 22 23 24 25 26 27 28
X33
1 3
A1
KA1
A2
F
N
XC1A
220V
Command
21
22
13
14
Table 1 - Recommended Wiring/Fuses
Rated Current
of the Drive [A]
Power Wiring
[mm 2 ]
CT/VT VT CT/VT VT
Ultra-fast fuse for
semiconductor protection
[A]
I 2 t of the fuse
[A 2 s]
@25ºC
3.6 - 1.5 - 15 18
4.0 - 1.5 - 15 18
5.5 - 1.5 - 25 125
6.0 - 2.5 - 25 70
7.0 - 2.5 - 35 130
9.0 - 2.5 - 35 125
10 - 2.5 - 35 130
13 - 2.5 - 50 240
16 - 4 - 50 240
24 - 6 - 63 760
28 - 2X2.5 - 80 920
30 36 10 16 80 1190
38 45 16 16 80 1710
45
220-230V
- 16 - 100 2300