Bosch Rexroth 10 Series - D3;D4 - Pressure Controller with Override

RE 92650/2020-03-03, Bosch Rexroth AG
11 Axial piston variable pump | A1VO Series 10
D3/D4 – Pressure controller with override
D3/D4 – Pressure controller with override
With the electric pressure adjustment with proportional
solenoid, the high pressure can be continuously set
depending on the solenoid current. If the load pressure
atthe consumer changes, the delivery rate ofthe pump
isadjusted so that the specified pressure is reached again.
Ifthe solenoid current falls below the beginning ofcontrol,
the unit will switch tothe set maximum pressure. The same
is true if the pilot signal is lost.
▼ Current/pressure characteristic curve
(negativecharacteristiccurve)
250
0
1
140
D3/D4
Working pressure p [bar]
Deactivation ofcontrol
Maximum adjustable
controller pressure
Minimum adjus
table controller pressure
Current I/I
max
Characteristic curve measured with pump in zero stroke
Further information on request.