Bosch rexroth 1 Series - Electrically Connecting the Axial Piston Unit

46/68 Installation
Bosch Rexroth AG, A20V(L)O Series 1, RE 93100-01-B/2019-09-10
To connect theaxial piston unit tothe hydraulic system:
1. Remove theprotective plugs and/or threaded plugs from theports where
theconnections should bemade according tothe hydraulic circuit diagram.
2. Make sure thesealing surfaces ofthehydraulic ports and functional surfaces are
not damaged.
3. Use only clean hydraulic lines orflush them before installation.
(Observechapter7.5 "Performing flushing cycle" onpage48 when you flush
out theentire system.)
4. Connect thelines inaccordance with theinstallation drawing and themachine
orsystem circuit diagram. Check that all ports are connected orplugged with
threaded plugs. With inside-reservoir installation, thehousing oftheaxial
piston unit must befilled before fitting thelines and filling thereservoir with
hydraulicfluid.
5. Properly tighten thefittings (observe tightening torques!). Mark all properly
tightened fittings, e.g. with apermanent marker.
6. Check all pipes and hose lines and every combination ofconnecting pieces,
couplings orconnecting points with hoses orpipes toensure they are insafe
working condition.
7.4.9 Electrically connecting theaxial piston unit
NOTICE
Short circuit due topenetrating hydraulic fluid!
Fluid can penetrate theproduct and cause ashort circuit!
▶ Do not install axial piston units with electric components (e.g. electric controls,
sensors) inareservoir below thefluid level (inside-reservoir installation) unless
they have been explicitly released for use under hydraulic fluid, e.g. HS5M.
Information on the HS5M can be found in data sheet 92076.
The proportional valve can be positioned separately in the system and connected
via the designated ports X
1
and X
2
of the pump. The unit can be installed in the
reservoir together with the directly mounted position transducer. Approved for
HLP fluids DIN 51524.
The machine/system manufacturer isresponsible for electric control layout.
Electrically controlled axial piston units must beconnected inaccordance with
theelectrical circuit diagram for themachine/system.
For axial piston units with electrical control and/or mounted sensors,
observetheinformation indata sheet 93100, e.g.:
• Permissible voltage range
• Permissible current
• Correct pin assignment
• Recommended electrical control units
Procedure