Example: Cold Plate With External Air Heat Sink; Setup; Sample Setup: Cold Plate With External Air Heat Sink - Siemens SINAMICS S120 Equipment Manual

Cold plate with external air heat sinks

2.2 Example: cold plate with external air heat sink

2.2 Example: cold plate with external air heat sink
2.2.1

Setup

This chapter describes the conditions that you must take into account when setting up the
cold plate and external air heat sink.
General conditions to be observed:
1. The maximum temperature within the cabinet is 40°C
(inlet air temperature of the power sections). The maximum temperature in the cabinet for
derating is 55°C. For the specifications, see the "Technical data".
2. The maximum permissible heat sink temperature is module dependent. See the
"Technical data". A temperature sensor in the power unit measures the temperature and
can be read via parameter r0037.
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 Foreword).
The power sections 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".)
2.2.2

Sample setup: cold plate with external air heat sink

This chapter provides an example to illustrate the arrangement of a drive group in a cabinet
in which the power units are cooled by means of a cold plate with an external air heat sink.
Example:
Four single motor modules and a control supply module are installed next to a line module
with 36 kW. Each power section and its cold plate are screwed onto the external air heat
sink.
26
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4