Publicité
RE 30134/06.12 VT-VACAP-500-2X/V0/...
Connection scheme
Amplifier – Valve
p/Q card
1 channel
p
Pressure sensor connection: Example channel II
U
sup
P
I
sig
I
Additional information
Applications
The "1-channel p/Q control card" consists of the basic card
in Europe format with DC/DC converter and front plate. With
the "2-channel p/Q control card", this basic card contains a
p/Q daughter card with identical circuit and a joint front plate.
The supply voltage is 24 V =. The voltage of the valve to be
regulated is not supplied via this card.
Input variables for the cards are the valve position command
value, the pressure command value, the actual pressure val-
ue and possible control mode signals. The pressure sensors
with voltage interface receive their voltage supply from the
card (z6/z8). At the card, pressure sensors with voltage and
current signal can be connected.
Signal exchange with system control
24 V DC
0 V
U
B
p/Q control signal
Reference – 0 V
U
z6
P
z14
U
b18
b8
Hydraulics Bosch Rexroth AG
z.B.
4/4 WV – NG10
5/3 WV – NG10
3/2 WV (Cartr.) + Pilot
4/4 WV – NG6
4/3 WV + Pilot
U
z6
sup
P
0 V/
b18
U
b16
sig
b18
b8
The pressure command value can be specified by means of
a potentiometer. The potentiometers can be supplied from
the card (z32/b12).
For control and comparison, the front plate and the circuit board
comprise test points for the most important characteristics.
The circuit of the "2-channel card" is designed so that the
controllers on basic and daughter card work in a completely
independent manner. In this mode, the card is suitable for
controlling 2 valves with integrated electronics (see exam-
ple 2, page 6).
An additional channel mode circuit allows for the consider-
able extension of the possible applications of the described
card (see example 1, page 6).
5/12
Signal
Pressure command value
Monitor signal p
actual
Controller enquiry
Controller shut-off
Channel change mode
U
z6
sup
0 V/
b2
U
b16
sig
U
0 V
b8
sig
Publicité
Chapitres
