Bosch rexroth SYDFED 2X Series Manual page 85

Table 28: Fault table of SY(H)DFED control systems
Malfunction
Pressure too low
Pressure too high
Insufficient flow
Drive motor shuts down due to
overloading
Troubleshooting | SYDFED-2X, SYDFED-3X, SYHDFED-1X
Possible cause
Actual pressure value acquisition incorrectly
configured
Pressure transducer defective/not connected
Diagnostics: Measure signal from PT and
compare with indication on the pressure gauge
Control system does not work in closed-loop
pressure control
Pilot valve defective
Actual pressure value acquisition incorrectly
configured
Pressure transducer defective/not connected
Diagnostics: Measure signal from PT and
compare with indication on the pressure gauge
Pilot valve defective
Pressure controller active
Actual swivel angle acquisition improperly set
Drive speed too low (slip, incorrect frequency,
wrong motor)
Damage to the pump (excessive pump leakage) Rotary group damaged
Wear/mechanical damage to the control system Replace control system, contact Rexroth
Excessive power consumption of the pump
Overcurrent protection of motor does not work
properly
Spool jams in pilot valve
Diagnostics: Compare actual value and valve
command value in IndraWorks
Actual swivel angle value acquisition
maladjusted or not working properly
Valve electronics defective
Remedy
Check actual pressure value in IndraWorks
and, if required, correct configuration of
actual pressure value acquisition
Replace pressure transducer, see page
77
Change the place of installation of the
pressure transducer (do not install
upstream of the pre-load valve; where
appropriate, close to the consumer)
Replace pressure transducer, see page
77
Connect pressure transducer
Increase swivel angle command value
Check that the hydraulic system is
leak-free and there is no excessive oil
consumption
Replace pilot valve, see page 76
Check actual pressure value in IndraWorks
and, if required, correct configuration of
actual pressure value acquisition
Replace pressure transducer, see page
77
Replace pressure transducer, see page
77
Connect pressure transducer
Replace pilot valve, see page 76
Increase pressure command value
Recalibrate swivel angle sensor
Contact machine or system manufacturer
Contact Rexroth Service
Service
Reduce torque limit
Reduce swivel angle command value
Check actual pressure value acquisition
Check setting and function
Replace pilot valve, see page 76
Swivel angle measurement check
Replace pilot valve, see page 76
RE 30017-B, Edition 11.2021, Bosch Rexroth AG
85/96