2 System Configuration
2
05.01
2.7 Infeed modules
2-57
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 Edition
2.7.1 Cooling components
Depending on the cooling method used, additional fan units and fan compo-
nents, specifically designed for the system, must also be ordered.
A differentiation is made between three different cooling types.
1. For internal cooling, the complete power loss remains in the electrical cabi-
net in the form of heat.
2. With external cooling, the power module power loss (thermal) is externally
dissipated in the form of heat and the power loss of the control unit is inter-
nally dissipated in the form of heat.
3. With hose cooling, the complete power loss is externally dissipated in the
form of heat through a hose connected to the module.
Fig. 2-6 System configuration with 400 V fan (only for 300 mm wide modules)
!
Warning
The fan may only be commissioned if it is electrically connected to the module
housing (PE fan via module housing).
!
Caution
If the fan has an incorrect direction of rotation (see arrow) then cooling is not
guaranteed!
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