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

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Interconnection
The two possible kinds of hydraulic component interconnection (series con‐
nection/parallel connection) show considerable differences with regard to:
●
Pressure decrease of entire cooling system
● Delivery rate of coolant pump
● Temperature level and temperature controllability of the individual com‐
ponents being cooled
Parallel connection Series connection
Tab. 4-10: Parallel and series connection of drive components being cooled
Parallel connection Parallel connection is characterized by nodal points in the hydraulic system.
The following applies:
●
The sum of the coolant flows which flow towards a nodal point equals
the sum of the coolant flows which flow away from this nodal point.
● For all cooling system branches between two nodal points there is the
same pressure difference (pressure decrease).
Aspects of application
The individual components being cooled
●
Can be cooled with the individually required flow rate ⇒ high degree of
thermal operational safety
● Have the same temperature level at the coolant inlet ⇒ steady machine
temperature increase
● All have the same pressure difference between coolant inlet and outlet
⇒ high degree of hydraulic operational safety of the cooling system due
to low total pressure.
Series connection With series connection, one single coolant flow is flowing through all compo‐
nents to be cooled.
The following applies:
●
The flow rates of all components are the same.
● Each component has a pressure decrease between inlet and outlet of
the coolant. The individual pressure decreases add up to form the total
pressure decrease of the drive components.
Aspects of application
Bosch Rexroth AG DOK-INDRV*-HXX05******-PR02-EN-P 74/407
Rexroth IndraDrive ML Drive Systems with HMU05
Combining the individual components