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About this product | A4... with HS5E(V)(L) control system Series 1x and 30
5.4 Ambient conditions
5.4.1 Oil-immersed applications
Only the HS5M control system is suitable for use in oil-immersed applications
(HLP hydraulic fluids according to DIN 51524). Using HS5E(V)(L) control systems
with integrated electronics is not permissible for fluid-immersed applications.
5.4.2 Ambient temperature
The maximum permissible ambient temperature range for HS5E(V)(L) control
systems is -20 °C to +60 °C. It is crucial to pay attention to the information in the
valid 92076 data sheet for the HS5E(V)(L) control system and the information in this
instruction manual.
We recommend installation in an area with moving ambient air, e.g. in the airflow
of an electric motor.
This applies in particular to the installation location of the integrated on-board
electronics.
Make sure that there is adequate heat dissipation for the electronics.
5.5 Notes on the selection of hydraulic fluids
The HS5E(V)(L) control system has been designed for the use of hydraulic fluids
according to DIN 51524 (HL/HLP).
▶ Adhere to all limits specified in the data sheet regarding temperature, viscosity,
cleanliness of the hydraulic fluid.
5.5.2.1 HFC fluids
You are only allowed to use HFC with the basic pump with option "F" (see type code
of data sheet 92050). In the case of an application with HFC fluid, be aware that the
service life of the HS5E(V)(L) control system is reduced compared to the standard
application. This is due to the reduced lubricity of the HFC fluid.
There are separately available commissioning regulations for pump systems when
using HFC fluids (data sheet 92053, amongst others).
5.6 Noise development
For design reasons, the axial piston pump generates an increased change in the flow
compared to a vane pump, for example, which results in pressure pulsation. This can
affect fluid noise in addition to airborne and structure-borne noise propagation. In
the final analysis, all of these factors result in an overall picture of "noise".
Frequently, this leads to other components being stimulated too, which creates
noises. This means that when check valves are used, for example, it may be
necessary to adapt the springs that are used to the conditions in the system if
stimulation with noise generation happens.
RE 92076-01-B/2021-04-22, Bosch Rexroth AG
31/104
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