Bosch Rexroth 4WRLE 4 Series, Руководство по эксплуатации

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Safety instructions 15/44
RE 29118-B/09.2021; 4WRPEH6_3X, 4WRPEH10_3X, 4WRPE6_3X, 4WRPE10_3X, 4WRLE_4X; Bosch Rexroth AG
Contact with salt water leads to increased corrosion on the valve. Mounting screws
and plug screws as well as moveable components such as hand levers may be
chemically corroded and damaged.
Take suitable corrosion protection measures.
2.7 Safety equipment
WARNING
Dangerous movements!
Danger to life, risk of injury or damage to property!
▶ Only use the approved control spool types specified in the corresponding
valve data sheet. Otherwise, secure shut-off of the valve and the related
safety function are no longer provided.
2.7.1 Use of the valve with IO-Link interface according to EN13849-1
The valve can be used in systems up to PL d, category 3 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 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
avg
for the entire application must be provided by the user or programmed into
a superior control system.
With symbols E, E1-, W and W1-, the valve can be used as shut-off element in
applications of categories 1, 2 or 3 with up to PL d in compliance with EN 13849-1.
Depending on the category or application, additional safety measures must be taken
according to EN 13849-1 and operating instructions 29118-B must be observed.
In every safety-relevant application, a safe shut-off of the IO-Link-B voltage
(pin 2 and 5) must be ensured according to EN 13849-1.
The safe shut-off is not part of the IO-Link valve and must be taken into account
for the safe design of the machinery.
Despite all measures taken in terms of plausibility check and monitoring, using the
valve involves significant residual risks. These must be evaluated by the machine
integrator depending on the individual application. For appropriate evaluation,
Bosch Rexroth provides the safety parameters of the valve with IO-Link interface
according to EN 13849-1. See chapter 2.7.4 "MTTFd, DC, CCF".
Safe shut-off with IO-Link