Safety Equipment - Bosch Rexroth 4WRPD Operating Instructions Manual

14/48 Safety instructions
Bosch Rexroth AG, 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10; RE 29391-B/05.2021
Leakage in case of incorrect working temperatures!
Use of the valve outside the intended temperature range may lead to permanent
leakage at the valve. Thus, hydraulic fluid in the form of an ejecting hydraulic
fluid jet may injure persons, lead to damage to property and endanger the
environment.
▶ Only use the safety valve within the intended ambient and fluid temperatures.
▶ In case of leakage, immediately exchange damaged seal rings or the valve.
Corrosion!
If the valve is used in humid environments or water, the valve and mounting
screws may corrode. Thus, the mounting screws and the valves lose their stability
and may become loose and thus constitute a risk of injury.
▶ Use mounting screws with adequate corrosion protection and exchange
mounting screws that show serious corrosion damage.
▶ Provide for adequate corrosion protection and exchange valves with serious
corrosion damage at an early stage.
Contact with salt water leads to increased corrosion at the valve. Thus,
mounting screws and plug screws as well as moveable components such as
hand levers may be chemically corroded and damaged.
You should therefore take suitable corrosion protection measures.

2.7 Safety equipment

Hazardous movements!
Danger to life, risk of injury or damage to property!
▶ Only use the approved spool types specified in the corresponding valve
data sheet. Otherwise, secure shutdown of the valve and the related safety
functionality are no longer provided.
2.7.1 Valve on Multi-Ethernet basis use according to EN13849-1
The valve on Multi-Ethernet basis can be used in systems up to PL e, category
4 according to EN13849-1. The valve can be used as shut-down element to
ensure compliance with the requirements of a secure start inhibitor according to
EN 60204 stop category 0.
In two-channel applications, i.e. applications with PL d, cat. 3 and PL e, cat. 4
according to EN 13849-1, the valve can be used as shut-off channel.
As a precondition, appropriate monitoring/plausibility checks with the required
DC for the entire application must be provided by the user or programmed into a
avg
higher-level control system.
Regarding valve monitoring, the valve only provides feedback signals which must
be evaluated by a higher-level control system in order to calculate the diagnostic
coverage according to EN 13849-1 and prove that the requirements are complied
with.
CAUTION
WARNING