38/56 Installation
Bosch Rexroth AG, A22VG Series 40, RE 93221-01-B/07.2013
7.4.9 Electrically connecting the axial piston unit
NOTE
Short circuit in event of 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).
The machine/system manufacturer is responsible for the layout of the electric
control.
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, please comply
with the details given in data sheet 93221, e.g.:
t the permissible voltage range
t the permissible current
t correct pin assignment
t the recommended electrical control units
Exact details on the connector, type of protection and matching mating connector
can also be found in data sheet 93221. The mating connector is not included in the
scope of supply.
1. Switch off power supply to the relevant system component.
2. Electrically connect the axial piston unit (12 or 24V). Before connecting, check
that the connector including all seals are intact.
If necessary, you can change the connector orientation by turning the solenoid
housing. This is dependent on the connector version.
To do this, proceed as follows:
1. Loosen the mounting nut (1) of the solenoid. To do this, turn the mounting nut (1)
one turn counterclockwise.
2. Turn the solenoid body (2) to the desired position.
3. Retighten the mounting nut. Tightening torque of the mounting nut: 5+1 Nm.
7.5 Performing flushing cycle
In order to remove foreign particles from the system, Bosch Rexroth recommends
a flushing cycle for the entire system before initial commissioning. To avoid internal
contamination, the axial piston unit must not be included in the flushing cycle.
The flushing cycle must be performed with an additional flushing unit. Follow the
instructions of the flushing unit’s manufacturer for the exact procedure during the
flushing cycle.
Changing connector
orientation
1
2
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