WEG CFW-11 User Manual - page 26
Installation and Connection
3
CFW-11 | 3-5
3.1.3 Cabinet Mounting
There are two possibilities for mounting the inverter: through the wall mounting or flange mounting (the heatsink
is mounted outside the cabinet and the cooling air of the power module is kept outside the enclosure). The
following information shall be considered in these cases:
Surface assembly:
Provide adequate exhaustion so that the internal cabinet temperature is kept within the allowable operating
range of the inverter.
The power dissipated by the inverter at its rated condition, as specified in
"Dissipated power in Watts - Through the wall mounting".
The cooling air flow requirements, as shown in
The position and diameter of the mounting holes, according to
.
Flange assembly:
"Dissipated power in Watts -
Flange mounting" will be dissipated inside the cabinet. The other losses (power modules) will be dissipated
at the external ventilation duct.
The inverter securing supports (position I of
) and the hoisting eyes (position J of
) must be removed and repositioned according to the
The portion of the inverter that is located outside the cabinet has protection degree IP54. Provide an adequate
gasket for the cabinet opening to ensure that the enclosure rating is maintained. Example: silicone gasket.
Mounting surface opening dimensions and position/diameter of the mounting holes, as shown in
.
Table 3.1 - Cooling air flow for frame size E models
Model
CFM
I/s
m³/min
CFW11 0142 T 2
180
95
5.1
CFW11 0180 T 2
265
367
(*)
125
174
(*)
7.5
10.4
(*)
CFW11 0211 T 2
CFW11 0105 T 4
138
65
3.9
CFW11 0142 T 4
180
95
5.1
CFW11 0180 T 4
265
367
(*)
125
174
(*)
7.5
10.4
(*)
CFW11 0211 T 4
(*) With optional degree of protection IP55.