Bosch Rexroth HMU05.1N Series, Руководство по планированию проекта

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Coolant The coolant should be a 4:1 mixture of water and Antifrogen N or L (e.g., Ri‐
Frost 1:4 from Rittal).
Do not mix Antifrogen N with Antifrogen L. When switching the coolant (N for
L or vice-versa), thoroughly rinse out all components and lines before adding
the new coolant.
Maximum coolant temperature At nominal power dissipation, the temperature increase in the coolant is 10 K
at the indicated minimum flow rates. If the maximum coolant inlet tempera‐
ture is 60°C, the maximum coolant temperature is 70°C.
Requirements for ambient condi‐
tions
No higher-level liquid cooling system is available at the installation site. The
requirements on the temperature accuracy of the coolant are low (±5 K).
Selecting the cooling device The absorbed thermal energy should be dissipated into the ambient air with
an air-liquid cooling unit.
The cooling liquid must dissipate 18.5 kW of heat output into the ambient air.
The maximum expected air temperature is 35°C.
Specific cooling capacity:
∑P
V
= 18.5 kW (sum of power dissipations from technical data of drive com‐
ponents)
T
in
= 60°C, max. coolant inlet temperature into cooling unit
T
amb
= 35°C according to ambient conditions
P
01
= 18.5 ÷ (60 - 35) = 0.74 kW/°C
In addition, a cooling device should be installed on the control cabinet that
can absorb the power of 4.65 kW dissipated into the air.
Fluidic interconnection Due to the very different coolant flow rates of the drive components, the fluid‐
ic connection of the cooling system branches for the drive components is in
parallel.
DOK-INDRV*-HXX05******-PR02-EN-P Bosch Rexroth AG 395/407
Rexroth IndraDrive ML Drive Systems with HMU05
Appendix