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Technical data 43/48
RE29583-XL-B/09.20, 4WS2EM 10...XL...,
Bosch Rexroth AG
The valve is not sensitive to faults as long as the specified application conditions are
complied with, in particular the oil quality and the operating temperature.
Table 17: Fault table
Error
Possible cause(s)
Remedy
Valve does not react
to control
Electrical connection
interrupted,
no current continuity
• Cable break
Replace the connection cable
• Mating connector not
connected
Connect the mating connector
• Connector without contact
Remove valve and have it repaired
• Valve-internal cable break
Remove valve and have it repaired
No pilot oil pressure available
• No pressure at P
Ensure the pilot oil supply
• Filter blocked
Exchange filter element and check system
for contamination
• Orifice blocked
Remove valve and have it repaired
Zero flow too high
• Control edges worn
Remove valve and have it repaired
Bad dynamic
behavior
• Filter contaminated
Exchange filter element and check system
for contamination
• Orifice contaminated
Remove valve and have it repaired
Instable zero point
• Control spool friction due to
contamination
Remove valve and have it repaired
Hysteresis
• Control spool friction due to
contamination
Remove valve and have it repaired
Large zero point
deviation
• Orifice contaminated
Remove valve and have it repaired
External leakage
Seal defective
• Seal at the connection
surface is defective
Remove the valve and replace the seals
• Seal at filter screw is
defective
Disassemble the filter screw and replace
the seal
• Other leakage
Remove valve and replace it with
a new one
Following faults due to contamination, in addition to the repair, it is essential
to check the oil quality and improve it, if necessary, by suitable measures such as
flushing or the additional installation of filters.
15 Technical data
For the technical data of your valve please refer to
"Data sheet 29583-XL"
.
Fault table