Publicité
8/12
Bosch Rexroth AG Hydraulics
Setting instructions
A: General instructions
– The measured values generally refer to the ground at the
test point "0 V"
– Indication of the direction of rotation for potentiometers:
cw – clockwise ccw – counterclockwise
– Before the commissioning, the position of the setting ele-
ments is to be checked according to the transfer condition
(see adjustment table page 11)
– Proceed in the order b) to f) (page 10).
B: Mode settings
DIL no. Status
Function
0
ON
Both controllers act on output 1
OFF
Controller 1 and 2 act on output 1
and/or 2, irrespective of each other
1
ON
Pressure sensor 1...6 V/0...10 V
OFF
Pressure sensor 4...20 mA
2
ON
Actual p value amplification
p
1)
≙ ~ p
sys
OFF
Actual p value amplification
p
≙ ~ 0.5 • p
sys
3
ON
Cable break detection active
OFF
Cable break detection inactive
4
ON
p controller active
OFF
p controller shut off,
only the Q signal is analyzed
5
ON
p/Q output signal not inverted
OFF
p/Q output signal inverted
1)
p
= System pressure
sys
2)
p
= Nominal sensor pressure
nom
C: Pressure sensor comparison
– Set the sensor type (DIL 1) and the gain factor (DIL 2)
– The zero point comparison is effected using the potenti-
ometer p
in order to achieve 0 V (±10 mV) at the sig-
zero
nal input with pressure-relieved pressure transducer
– The sensitivity is aligned using the potentiometer p
system pressure (+10 % / –20 %).
D: Flow zero point
The zero position of the valve is set using the potentiome-
ter Q
(±10 %). Due to the valve amplifier integrated in the
zero
valve, direct adjustment at the amplifier is not intended.
2)
nom
nom
actual
VT-VACAP-500-2X/V0/... RE 30134/06.12
E: Comparison of the position signal
– Shut off the p controller (DIL 4)
– Set the command value amplification using the potenti-
ometer Q
.
max.
F: Optimization of the control characteristic
DIL no. Status
Function
6
ON
D Pressure
OFF
7
ON
OFF
8
ON
9
ON
10
ON
11
ON
I
12
ON
13
ON
P Reduced pres-
OFF
14
ON
15
ON
16
ON
1)
With DIL 6 and 7 = OFF, DIL 8 is ineffective
G: Test points
The test points of the card may only be loaded with
a R
> 10 kΩ. in case of overload, the function of the con-
L
trol is impaired and/or the card is destroyed. The test points
are located on the front plate and laterally on the printed cir-
cuit board.
Basic card and daughter card have separate test points
each, however the identical reference ground.
at
normal
build-up
1)
reduced
Pressure
normal
reduction
1)
reduced
Share high
(9, 10 = OFF)
Share medium
(8, 10 = OFF)
Share low
(8, 9 = OFF)
Share = 0
(12 = OFF)
Share available (11 = OFF)
Valve opening in
sure reduction
case of pressure
reduction
< approx.15 %
ineffective
Share low
(16 = ON/15 = OFF)
Share medium
(14, 16 = OFF)
Share high
(14, 15 = OFF)
Publicité
Chapitres
