Fault Table; Technical Data - Bosch Rexroth 4WRPD Operating Instructions Manual

14.2 Fault table

The valve is usually not sensitive to faults if the prescribed application conditions
and hydraulic fluid quality are complied with.
14.2.1 Mechanical faults
Table 9: Mech. Fault table
Fault
Valve does not switch
External leakage
14.2.2 Electrical faults
Error memory
The Multi-Ethernet electronics is equipped with an Ethernet-based bus connection.
For operation, a Windows PC or an appropriate control system has to be
connected. Via the Ethernet interface, the valve provides the information required
for troubleshooting. The valve has a ring buffer for storage of the last 80 errors.
Indicators and alarms
The valve on Multi-Ethernet basis is not equipped with safety-relevant indicators
or alarms. The LED displays only serve to evaluate bus traffic which is not safety-
relevant.
15
For the technical data of the valve on Multi-Ethernet basis, please refer to the valve
data sheet.
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
Possible cause
Insufficient pilot pressure
Control spool is jammed due to
contamination
Electrical connection is
disconnected
Cable break
Connector defective or damaged
Seal at valve connection surface
damaged
Other leakage

Technical data

Technical data 45/48
Remedy
Check and/or reapply pressure
at the ports.
Remove valve and replace it
with a new one.
Check whether the electrical
connectors are correctly and
completely mounted.
Check the error memory (see
electrical errors)
Replace connection line
Replace the connector
Remove the valve and replace
the seals, see chapter 10.3
"Repair"
Replace the valve