Siemens 6SL3210-1SE27-5UA0 [278/318] Dimensioning the cooling circuit

Siemens 6SL3210-1SE23-8UA0 [278/318] Dimensioning the cooling circuit
Cooling circuit and coolant properties
10.1 Cooling circuit requirements
Manual
278 Manual, 01/2011, 6SL3097-4AC10-0BP2
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Figure 10-4 Pressure difference as a function of volumetric flow for various coolants and temperatures
Operating pressure
The operating pressure must be set according to the flow conditions in the supply and return
lines of the cooling circuit. The required coolant flow rate per time unit must be set according
to the technical data of the components. The components are normalized to a rated pressure
of 70 kPa (for coolant type H
2
O) via a baffle plate.
Layout of the components
The components should be laid out in the system in such a way that the overall length of the
supply and drain lines is the same for every SINAMICS component.
Water cooling systems with series-connected SINAMICS devices are not permitted.
Dimensioning the cooling circuit
Recommendation for dimensioning the cooling circuit:
The differential pressure between the supply and return lines should be selected so that:
ΣdPi < dP
Syst
< ΣdPi + 30 kPa

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