Overview Of The Impact Of Defects - Bosch rexroth CytroBox Operating Instructions Manual

Error
Excessive noise level
Pressure fluctuations in the
pressure line
Incorrect operating pressure
Pressure command value is
not reached or insufficient
flow.
Overload of the drive
controller during operation
Overload of the drive
controller when
disconnecting hydraulic
actuators

15.1.1 Overview of the impact of defects

Table 51: Impact of defects
Possible cause
Hydraulic power unit does not stand with
all four machine feet on a level and non-
vibrating surface.
The hydraulic power unit is connected to
the machine via pipelines.
Vibration of the control system,
e.g. pressure controller
Incorrect pressure command
value presetting
Excessive pressure loss due to incorrect
dimensioning of hose lines
Speed limit too low
Drive insufficiently dimensioned
Control cabinet air filter contaminated
Pressure relief valve set too high
Troubleshooting 113/128
Remedy
▶ Using the height-adjustable machine feet, ensure
that all four machine feet evenly stand on a level and
non-vibrating surface and align the hydraulic power
unit vertically.
▶ Route out the hydraulic connections between the
hydraulic power unit and the machine with hose
lines.
▶ Check the settings of the controller,
see chapter "IMC optimization" on page 94.
▶ Check the pressure command value, parameter
P-0-1271.
– Fixed command value memory correctly
parameterized
– Command value correctly preset via the field bus
interface
– Service mode active
▶ If only one pressure rating is intended, make sure
that F1.03 and F1.04 are set to 0.
– For further information, refer to
chapter "IMC configuration" on page 94.
▶ Replace the hose lines against larger nominal widths.
▶ As applicable, change the following parameters:
– P-0-1285 Effective flow command value
– P-0-1289 Effective maximum velocity limitation
▶ Check the following values in IndraWorks DS:
– Speed limitation via field bus presetting
– Fixed command value memory speed limitation
▶ Observe the maximum admissible speed of the
application.
– If necessary, contact the Bosch Rexroth customer
service.
▶ Indicator in display "drive overload torque"
– Check parameter S-0-0092 Torque/force limit
value bipolar.
– Check parameter P-0-0141 Thermal controller
utilization.
– Observe the maximum ambient temperature,
see also the performance curves in the Drive
data sheet provided in chapter 1.2 "Required and
amending documentation".
▶ Replace the air filter of the control cabinet.
▶ Make sure that the pressure relief valve is set 10 bar
over the operating pressure.
CytroBox, RE 51057-B/11.19, Bosch Rexroth AG