Technical data 45/48
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
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 Possible cause Remedy
Valve does not switch Insufficient pilot pressure Check and/or reapply pressure
at the ports.
Control spool is jammed due to
contamination
Remove valve and replace it
with a new one.
Electrical connection is
disconnected
Check whether the electrical
connectors are correctly and
completely mounted.
Check the error memory (see
electrical errors)
Cable break Replace connection line
Connector defective or damaged Replace the connector
External leakage Seal at valve connection surface
damaged
Remove the valve and replace
the seals, see chapter 10.3
“Repair“
Other leakage Replace the valve
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 Technical data
For the technical data of the valve on Multi-Ethernet basis, please refer to the valve
data sheet.
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