Electrically Connecting The Axial Piston Unit - Bosch rexroth A15VO Instruction Manual

40/60 A15VO/A15VLO series 12 | Installation
Procedure
Bosch Rexroth AG, RE 92512-01-B/2023-03-27
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 41 when you
flush the hydraulic 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. For 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
Pressure increase due to excessive control current with D2 controller!
Applying current above the current limit of 750 mA to the D2 controller via
proportional solenoid results in an impermissible increase in pressure.
▶ Make sure that the proportional solenoid is not energized to more than the
permissible current limit of 750 mA (see also data sheet 92512 D2 controller
technical data).
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
(see also chapter 7.3.2 "Inside-reservoir installation" on page 29).
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 parameters in data sheet 92512, e.g.:
• Permissible voltage range
• Permissible current
• Correct pin assignment
• Recommended electrical control units
WARNING
NOTICE