Cabinet Mounting - WEG CFW-11 User Manual

Installation and Connection

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 table 8.1 "Dissipated power in
Watts - Through the wall mounting".
The cooling air flow requirements, as shown in table 3.1.
The position and diameter of the mounting holes, according to figure 3.1.
Flange assembly:
The losses specified in table 8.1 "Dissipated power in Watts - Flange mounting" will be dissipated inside the
cabinet. The remaining losses (power module) will be dissipated through the vents.
3
The inverter securing supports and the hoisting eyes must be removed and repositioned according to the
figure 3.3.
The portion of the inverter that is located outside the cabinet is rated 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 figure 3.1.
3-4
Table 3.1 - Cooling air flow for frame size E models
Model CFM
CFW11 0142 T 2 138
CFW11 0180 T 2
265
CFW11 0211 T 2
CFW11 0105 T 4 138
CFW11 0142 T 4 180
CFW11 0180 T 4
265
CFW11 0211 T 4
I/s m³/min
65 3.9
125 7.5
65 3.9
95 5.1
125 7.5