Bosch rexroth HS5E Instruction Manual page 30

For axial piston variable pump a4vso, a4vbo, a4vsg and a4csg
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A4... with HS5E(V)(L) control system Series 1x and 30 | About this product
Internal control pressure
fluid for HS5EL
Bosch Rexroth AG, RE 92076-01-B/2021-04-22
With load pressure between 0 bar and < 20 bar, the pump may take undefined
swivel angle positions between α = ±100%.
This can lead to cavitation and damage to the pump.
You can find the maximum and minimum pressures in data sheet 92076.
Check whether additional measures are necessary on your machine for the
application in order to guarantee that the torque is switched off. If necessary,
make sure these are appropriately implemented.
In case of energy fluctuations and/or energy failure, the unit will move to different
swivel angles, depending on the available load pressure (system-related). In case
of missing load pressure, the unit will go to V
displacement can cause torque to be generated in the application. Check
whether additional measures are necessary on your machine for the application
in order to guarantee that the torque is switched off. If necessary, make sure
these are appropriately implemented.
With internal control pressure fluid supply, the HS5EL pump control system
works dependent on the high-pressure circuit or the boost pressure. With
a sufficient load pressure (> 20 bar), the control can take control positions in the
swivel angle range of "-100 to +100%" for A4CSG.
With a de-energized proportional valve and available load pressure (> 20 bar), the
pump swivels in the following cases:
– Standard version A4CSG to swivel angle α = -100% (Vg min).
This can lead to cavitation and damage to the pump.
You can find the maximum and minimum pressures in data sheet 92076.
With control pressures between 0 bar and < 20 bar, the pump may take undefined
swivel angle positions between α = ±100%.
This can lead to cavitation and damage to the pump.
You can find the maximum and minimum pressures in data sheet 92076.
Check whether additional measures are necessary on your machine for the
application in order to guarantee that the torque is switched off.
If necessary, make sure these are appropriately implemented.
In the case of energy fluctuations or failures, with adequate control pressure
supply, the unit moves to the minimum swivel angle possible, standard version
A4CSG to swivel angle α =-100%. Limiting the minimum displacement can cause
torque to be generated in the application. Check whether additional measures
are necessary on your machine for the application in order to guarantee that
the torque is switched off. If necessary, make sure these are appropriately
implemented.
. Limiting the minimum
g max

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Rexroth hs5evRexroth hs5el

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