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Malfunction
Drawing pressure not reached
Drawing pressure too high
Cylinder piston remains in the lower position
Switching shock when starting a motion
Loud bang when driving against end stop
Cylinder can only be driven in one direction
Underpressure in the annulus area of the cylinder
Safe reduced velocity <10 mm/s not working
Safe reduced velocity (<10 mm/s) can only be
driven in one direction
Safe reduced velocity higher than 10 mm/s
Table 12: Fault table
Possible cause
• Maximum drawing pressure setting on the logic cover .131 too low.
• Cable break at pilot valve .132.
• Incorrect command value from the electric control system on
pilot valve .132.
• Pressure control via direction valve .110 not optimized.
• Pressure relief valves .150/.151 set too low.
• Pressure relief valve .235 set too low.
• Valve .140 and/or .145 does not open.
Pressure relief valves .150/.151 are activated.
• Incorrect command value from the electric control system to
pilot valve .132.
• Pressure control via direction valve .110 not optimized.
• Pressure supply failure.
• Pressure relief valve .130/.131 does not close and is stuck.
• Pilot valve .132 does not switch or does not switch completely.
• Maximum drawing pressure setting on the logic cover .131 too low.
• Directional valve .110 does not switch.
• Pressure relief valves .150/.151 not set.
• Switching time of directional valve .110 too fast.
• Pump pressure too high.
• Velocity too high.
• Pump pressure too high.
• Directional valve .110 stuck in a switching position.
• Tank preload pressure too low.
• Nozzle .172 too small.
• Nozzle .171/.172 blocked.
• Directional valve .170 does not switch.
• Directional valve .170 stuck in a switching position.
• Nozzle .171 or .172 too large.
• Nozzles set with incorrect own weight (closing/extending with minimum
load pressure and opening/retraction with maximum load pressure).
In case of faults in individual components, please consult the documentation
of the respective component.
Troubleshooting | Press module Type IH04E
RE 63129-MON, Edition 09.2022, Bosch Rexroth AG
43/48
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