2 System Configuration
2
05.01
2.7 Infeed modules
2-39
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
2.7.1 Cooling components
Depending on the cooling type, matching supplementary fan units and fan
components must be selected.
A differentiation is made between three different cooling types.
1. For internal cooling, the complete heat loss remains in the electrical cabinet
which is manifested as temperature rise.
2. For external cooling, the power module power losses are dissipated
externally and the control section power loss is dissipated internally.
3. For hose cooling, the complete power loss is dissipated externally through a
hose connected to the module.
Fig. 2-4 System configuration with 400 V fan (only for 300 mm modules)
!
Warning
The fan may only be commissioned, if it is electrically connected with the
module housing (the PE of the fan is connected via the module housing).
!
Caution
Cooling is not guaranteed if the fan rotates with the wrong direction of rotation
(refer to the arrow)!
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