Bosch rexroth Sytronix SvP 7030 IMC Operating Manual page 174

Sytronix SvP 7030 IMC
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Fault table
Malfunction
Screaming noise
Other unusual noise
No or insufficient pres-
sure(< 4 bar)
Pressure too low
Bosch Rexroth AG
Possible cause
Unsuitable control parameters for
pressure or speed controller
Oil level in the tank too low; pump
partly aspires air
Suction line leaky
Pump cavitates when pressure is
reduced
Diagnostics: Measure, whether
pressure undershoots < 1 bar occur
when pressure is reduced in the
pressure line
Fluid in the tank mixed with air;
cooling and/or filtration circuit
leaky
Input speed too high
Wrong direction of rotation
Insufficient suction conditions, e.g.
air in the suction line, insufficient
diameter of the suction line, vis-
cosity of the hydraulic fluid too
high, suction height too great, suc-
tion pressure too low, foreign body
in the suction line
Improper mounting of the motor-
pump unit
Improper mounting of attachment
parts, e.g. coupling and hydraulic
lines
Air in the pump
Wear/mechanical damage to the
control system
Faulty mechanical drive (e.g. defec-
tive coupling)
Hydraulic fluid not within the
optimum viscosity range
Drive unit defective (e.g. motor)
Wear/mechanical damage (e.g.
pump)
Actual pressure value acquisition
incorrectly configured
Remedy
Check controller settings
Top up oil
Seal suction line
Optimize controller, reduce the
command value via a ramp or in
steps
Minimize negative I-term
Reduce pressure controller gain
Seal
Contact machine or system manu-
facturer
Check configuration of direction of
rotation
Check, whether shut-off valves are
open
Machine or system manufacturer
(e.g. optimize inlet conditions, use
suitable hydraulic fluid)
Bleed hydraulic system completely,
fill suction line with hydraulic fluid
Check mounting of the motor-pump
unit according to the instructions
given by the machine or system
manufacturer. Observe tightening
torques
Mount attachments in accordance
with the instructions of the cou-
pling or fitting manufacturer
Bleed the pump
Replace control system, contact
Rexroth Service
Contact Rexroth Service
Use suitable hydraulic fluid
(machine or system manufacturer)
Contact machine or system manu-
facturer
Replace Sytronix system, contact
Rexroth Service
Check actual pressure value in
IndraWorks and, if required, cor-
rect configuration of actual pres-
sure value acquisition
Replace pressure transducer
RE 62312-B, 03.2022