Bosch Rexroth 4WS2EM 10 Series - Technical data

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