Cold Plate With External Air Heat Sink; Configuration And Conditions - Siemens SINAMICS S120 Manual

12.10.2

Cold plate with external air heat sink

12.10.2.1

Configuration and conditions

The conditions described below must be taken into account when cooling a cold-plate drive
line-up by means of an external air heat sink.
General conditions to be observed:
● The maximum temperature within the cabinet is 40 °C (air intake temperature of the
power sections). The maximum temperature inside the cabinet is 55 °C when derating is
taken into consideration.
● The maximum permissible heat-sink temperature is module-dependent. Refer to the
"Technical data" for more information. A temperature sensor in the power unit measures
the temperature and can be read via parameter (see SINAMICS S120/S150 List Manual).
● The customer must take measures to protect the devices against condensation (see Anti-
condensation measures (Page 782)).
Note
If the components are installed in a sealed cabinet, an internal fan must be installed to
prevent hot spots. It is best to install the fan above the modules to optimize the air flow
(suction).
If the conditions in the plant do not allow the temperature in the cabinet to be limited to a
maximum of 40 °C, further measures must be taken. Please contact the hotline for more
information (see the Preface).
The power units must be arranged in such a way that the power (loss) is distributed equally.
The permissible current carrying capacities of the DC link busbars in the different modules
must be taken into account (see "Technical data" for the various modules).
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Cabinet design and EMC Booksize
12.10 Information on cold plate cooling
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