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5.2 Product description
5.2.1
Block diagram
The block diagram is provided on the back of the device.
1
U B / power supply
2
L
0
/
e r
e f
e r
n
e c
f
r o
p
ower supply
3
e
r r
r o
= (
0
) V
4
M
0
/
e r
e f
e r
n
e c
p
o
e t
5
swivel angle command value
6
swivel angle actual value
p
com
7
pressure command value
8
p pressure actual value
act
switch TD (in) or power limiter activ (out)
9
p HIGH / signal (+) from
1
0
pressure transducer
p LOW / signal (-) from
1 1
pressure transducer
P
E
o t
S
Y
D
F
E
E
Fig. 1: Block diagram of the test device VT-PDFE-1-10/V0/0
5.2.2
Electrical connection
The test device is provided with a socket and a cable connector in order to
interconnect it in the supply cable to the VT-DFPx pilot valve of the
SY(H)DFEE pump control system. The mating connector is to be plugged directly
onto the pilot valve of the pump unit, the cable connector is to be connected to
the incoming cable of the plot valve, which was disconnected beforehand. The
connectors cannot be interchanged.
• The pilot valve has not enable input to deliberately enable or disable the control
function of the valve. The control becomes effective as soon as the pilot valve is
supplied with power and the pump is powered, and the command values that are
input are decisive for the operational states of pressure or swivel angle control.
1
U B
green
ON/OFF
2
red
3
4
n
a i t
f l
r o
l l a
analog values
α
command
internal
0-10V
5
external
6
p
command
internal
0-10V
7
external
8
9
IST
1
0
IST
1 1
P
E
f
o r
m
P
L
C
RE 29689-B/11.2019; VT-PDFE-1X..., Bosch Rexroth AG
About this product
15/32
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