KEB COMBIVERT F6 - Series Connection Cooling Circuit; General Instructions

4.3 Series connection cooling circuit
4.3.1 General instructions
• Does the drive converter system work at rated operation the execution of the coolant
circuit can be carried out in a series circuit.
• It should be noted that the temperature is analog measured in the slave devices and
an error signal is given digitally to the master.
• Thecoolantreturnowshouldalwaysbeattachedatthemasterinordertodisplay
real temperatures.
• Thevolumeowtobeselecteddependsonthesizeofthedevice,theoutputcurrent
at rated operation and the resulting power loss for the drive converter system.
• Thecorrelationbetweentotalpowerdissipation,volumeowandtemperaturedif-
ference are shown in the diagram Series connection of liquid coolers and must be
within the recommended operational range.
ATTENTION
• Themaximumtemperaturedifferencebetweenowandreturnow
must not be exceeded.
• Ifthevolumeow(above30l/min)isselectedtoolarge,increases
the risk of erosion in the liquid cooler.
• Series connection of liquid-cooled devices with stainless steel
tubes is not permitted, since the total system pressure can increase
above 10 bar.
• => Pressure drop aluminium heat sink with stainless steel tubes.
• ThecoolingowmustalwaysbestartedbeforestartingtheKEB
COMBIVERT.
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MECHANICAL INSTALLATION