Hitch Control Valve Ehr11-Ehs4 - Bosch Rexroth SB11 Instruction Manual

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Internal function
Bosch Rexroth AG, RE 66177-B/2022-05-03
5�3�8 Hitch control valve EHR11-EHS4
Table 9: Internal functions
Position Designation
Valve axis
Individual pressure compensator with check
valve function
Electro-hydraulic actuating unit EHS4
Check valve
Secondary pressure relief valve
Shuttle valve
Spring assembly
Threaded plug
CAUTION! The threaded plugs
bores are not designed for connection fittings.
Individual pressure compensator
block-internal channel P. The integrated check valve function prevents the return
flow to the block-internal channel P.
Electro-hydraulic actuating unit EHS4
bus pilot signal. The received CAN bus pilot signals are converted to respective
deflection of the control spool.
• Controls the inlet flow to working port
• With internal return flow:
Controls the inlet flow and return flow via working port
Port is plugged by threaded plug
Check valve : Prevents valve-internal return flow in working port
Information
optionally with manual
auxiliary actuation
, and must not be removed! The threaded
: Controls the valve-internal inlet flow of the
: Control is realized at port
and return via the return flow port
.
internal
via CAN
.
.