Bosch Rexroth 10 Series - Project Planning Notes

RE 92650/2020-03-03, Bosch Rexroth AG
25 Axial piston variable pump | A1VO Series 10
Project planning notes
Project planning notes
▶ The A1VO axial piston variable pump isdesigned tobe
used inopen circuit.
▶ The project planning, assembly and commissioning
oftheaxial piston unit require theinvolvement
ofqualified skilled persons.
▶ Before using theaxial piston unit, please read
thecorresponding instruction manual completely and
thoroughly. If necessary, this can berequested from
BoschRexroth.
▶ Before finalizing your design, please request abinding
installation drawing.
▶ The specified data and notes contained herein must
beobserved.
▶ Depending ontheoperating conditions oftheaxial
piston unit (working pressure, fluid temperature),
thecharacteristic curve may shift.
▶ The characteristic curve may also shift duetothe dither
frequencyorcontrol electronics.
▶ Preservation: Our axial piston units are supplied
asstandard with preservative protection foramaximum
of12 months. If longer preservation isrequired
(maximum 24 months), please specify this inplain text
when placing your order. The preservation periods apply
under optimal storage conditions, which can befound
indatasheet90312orinthe instruction manual.
▶ Not all versions oftheproduct are approved foruse
inasafety function according toISO13849. Please
consult theproper contact atBoschRexroth ifyou
require reliability parameters (e.g. MTTF
d
)
forfunctionalsafety.
▶ Depending onthe type ofcontrol used, electromagnetic
effects can beproduced when using solenoids. Use
ofthe recommended direct current (DC) onthe
electromagnet does not produce any electromagnetic
interference (EMI) nor isthe electromagnet influenced
byEMI. Potential electromagnetic interference (EMI)
exists ifthe solenoid isenergized with amodulated
direct current (e.g. PWM signal). The machine
manufacturer should conduct appropriate tests and take
appropriate measures toensure that other components
oroperators (e.g. with apacemaker) are notaffected
bythis potentiality.
▶ Pressure controllers are notsafeguards against pressure
overload. Be sure toadd apressure relief valve tothe
hydraulic system.
▶ For drives that are operated foralong period with
constant rotational speed, thenatural frequency
ofthehydraulic system can bestimulated
bytheexcitation frequency ofthepump
(rotationalspeed frequency ×9). This can beprevented
with suitably designed hydraulic lines.
▶ Please note thedetails regarding thetightening torques
ofport threads and other threaded joints inthe
instruction manual.
▶ Working ports:
– The ports and fastening threads are designed forthe
specified maximum pressure. The machine orsystem
manufacturer must ensure that theconnecting
elements and lines correspond tothe specified
application conditions (pressure, flow, hydraulic
fluid, temperature) with thenecessary safety factors.
– The working ports and function ports are only
intended toaccommodate hydraulic lines.