Bosch Rexroth 4WRPD Operating Instructions Manual page 34

34/48 Installation
Bosch Rexroth AG, 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10; RE 29391-B/05.2021
Improper mounting of connectors and routing of cables!
M12 connectors that are not properly fastened and cables that are not laid in
accordance with the mounting instructions may loosen during operation or cause
damage. This can result in a valve communication breakdown or failure of the
valve function.
▶ Lay cables and lines so that they cannot be damaged and no one can trip over
them.
▶ Tighten the M12 connector to 1 Nm using a torque wrench.
▶ Use M12 cables with self-locking mechanism.
▶ Make sure that the cable is installed without any transverse forces acting on it.
▶ Bind together all cables that are connected to XH1, X7E1 and X7E2 after at
most 20 cm to form a cable harness (see Fig. 9).
▶ Fasten the cable harness after further 20 to 30 cm and see to it that there is
no relative movement between the fixation and the valve. No cable loops may
be formed before the fixing point.
▶ Generally, observe the installation notes of the cable manufacturers.
▶ By analogy, fix the cables of X2M1, X2M2 and X8M, if used, according to the
above description.
Missing seals and plugs!
Risk of short-circuit! Fluids may enter the valve and cause a short-circuit.
▶ Before commissioning, make sure that all seals and plugs of plug-in
connections are tight.
Incorrect connection wiring!
Risk of injury due to electric shock and malfunctions! The valve may only be
connected by or under the supervision of a specialized electrician. The lines used
have to be suitable for operating temperatures of -20 °C...+100 °C.
▶ De-energize the connection line before the installation.
▶ Correctly connect the protective earthing conductor and the earthing.
▶ Ensure that there are no sharp bends in the connection line and litz wires to
avoid short-circuits and interruptions.
▶ Cable and line entries must always be assembled according to the assembly
instructions.
▶ During the installation, ensure tightness between the cable, cable entry and
line entry.
▶ Only use connection lines which comply with the requirements specified in the
data sheet.
CAUTION