Bosch Rexroth 10 Series - DR;DN - Pressure Controller

RE 92650/2020-03-03, Bosch Rexroth AG
9 Axial piston variable pump | A1VO Series 10
DR/DN – Pressure controller
DR/DN – Pressure controller
The pressure controller limits the maximum pressure at the
pump outlet within the control range ofthe variable pump.
The variable pump only supplies as much hydraulic fluid as
isrequired bythe consumers. If the working pressure
exceeds the pressure command value at the pressure valve,
the pump will regulate toasmaller displacement toreduce
the control differential.
▶ Basic position indepressurized state:V
g max
.
▶ DR
Setting range
1)
for pressure control 100 to250bar.
Standard is250bar
DN
Setting range
1)
for pressure control 20 to100bar.
Standard is100bar
▼ Characteristic curve DR
250
q
v min
q
v max
100
Working pressure p [bar]
Flow q
V
Hysteresis/pressure increase Δp
max
▼ Circuit diagram DR
L
2
L
1
B
S
X
Controller data
NG 18 28 35
Hysteresis and repeat precision Δp
Maximum 5 bar
Pilot fluid consumption Approx. 3 l/min maximum
1) Inorder toprevent damage tothe pump and the system,
thepermissible setting range must not beexceeded.
Lower values on request