Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For electrical isolation of operating voltage:
• Use only power units which guarantee reliable
electrical isolation of the operating voltage as per
IEC/DIN EN 60204-1. Observe also the general
requirements for PELV power circuits as per IEC/DIN
EN 60204-1.
Switch power packs are permitted, providing they
guarantee reliable isolation in accordance with
EN 60950/VDE 0805.
1
Supply port (1)
2
Electrical connection
3
Status LED (green)
4
Earth terminal, external (front and back side)
5
Operating key upwards (UP)
6
LED display
7
Operating key downwards (DOWN)
8
Edit key
9
Pressure output (2)
aJ
Venting (3)
aA
Front fastening hole
aB
Side fastening hole
1
2
3
5
6
4
7
8
9
aJ
aA
aB
1
aB
2
6
6
5
7
9
aJ
aA
4
4
Type: ...E1T
Type: ...E1
8
3
Fig. 1
Proportional pressure regulating valve
en
. . . . . . . . . . . . . . . . . .
Note
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• Installation and commissioning may only be
performed in accordance with the operating
instructions and by qualified personnel.
1 Application and function
The VPPE-... is designed to control pressure proportion-
ately to a specified setpoint value.
Replacement of manually adjustable pressure regulators
by remotely, electrically adjustable regulators, to have
different machine parameters available quickly and auto-
matically, for example.
Supply port
Setpoint value
Setpoint value
Pressure
output
Venting
Pin 5
2 Variants of the VPPE-...
Type code of the VPPE-...
VPPE - 3 - 1 - 1/8 - 6 - 010 - E1T
1
2
3
Item
Features
Meaning
1
Pressure regulation range:
2
6
10
0.02 … 2.0 bar
0.06 … 6.0 bar
0.1 … 10.0 bar
2
Setpoint specification:
010
420
0 … 10 V (voltage)
4 … 20 mA (current)
3
Control unit: E1
Type of mounting: T
7-segment LED display
Supply manifold mounting
3 Conditions of use
General conditions for the correct and safe use of the
product, which must be observed at all times:
• Observe the specified limits (e.g. for pressures,
temperatures and electric voltage).
• Make sure there is a supply of correctly prepared
compressed air in accordance with the specifications on
the medium Technical specifications.
• Please observe the prevailing ambient conditions.
• Please comply with national and local safety laws and
regulations.
• Remove all transport packing, such as protective wax,
foils, caps, cardboard boxes (with exception of the
covers in the pneumatic connections).
The individual materials can be stored in containers for
recycling purposes.
• Slowly pressurize the complete system.
This will prevent uncontrolled movements from
occurring.
• Note the warnings and instructions
– on the product
– in these operating instructions.
• Use the product in its original state without undertaking
any modifications.
4 Fitting
4.1 Mechanical
• Handle the VPPE-... with care so that the electrical
connection is not damaged.
Such damage reduces the operational reliability.
• Make sure there is sufficient space for the cable
connection and tube couplings. This avoids breakage of
the connecting cable.
• Put the VPPE-... as close as possible to the consuming
device. This leads to improved control precision annd
shorter response times.
• Push two screws (M4) into the side mounting holes
aB
or the front mounting holes
aA
(see Fig. 1),
max. torque: 2 Nm.
• Fasten the VPPE-... in the intended location.
4.2 Pneumatic
• Remove the covers on the compressed air connections.
• Attach the pneumatic tubing to the following connec-
tions (see Fig. 1):
– Supply port (1)
1
– Pressure output (2)
9
• Install a silencer at venting (3) (item
aJ
) or remove the
exhaust with ducted tubing.
Note
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The position of the pneumatic connections depends on
the variant ordered.
4.3 Electrical
Note
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Make sure that the cable is laid as follows:
– not squashed
– not bent
– not stretched.
• Use accessories from Festo (see “Accessories”):
– plug socket with cable
or
– socket cable, ready-to-use.
This ensures that the specified protection class IP65
and EMC are achieved.
Note
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To ensure EMC safety, the device must be earthed as
follows:
• Use the earth terminal (see Fig. 1).
• Use the following earthing accessories (included in
delivery):
– Self-cutting screw
– Flat plug
– Contact disc
• Connect the circuitry of the VPPE-... as show in the
circuit diagram. Preferably use cable from Festo.
1
2
3
5
4
PIN no. Colour
1)
VPPE
1
brown
+24 VDC
2
white
Analogue input – setpoint value / – w
3
blue
GND
4
black
Analogue input + setpoint value / + w
(0 … 10 V or 4 … 20 mA)
5
grey
Switch output (24 V) or
analogue output (0 … 10 V or 4 … 20 mA)
+ actual value / X
OUT
1)
Colour is only valid for accessory cable from Festo
5 Commissioning
Note
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• The VPPE-... interprets setpoint signals less than
0.1 V as 0 V and setpoint signals less than 4.16 mA
as 4 mA. In this case, the output pressure is set to
0 bar through activation of the ventilation valve.
As a result, a clear valve condition is assured at
w = 0.
• Safety position:
In case of setpoint cable break of the voltage variant,
the output pressure is set to 0 bar. In case of setpoint
cable break of the current variant, or in case of loss
of power supply, the output pressure remains uncon-
trolled. Leakage produces a change in pressure in the
long term.
• Connect the VPPE-... with a setpoint signal.
The VPPE has a so-called “differential input”. The
setpoint signal is applied to the contact Pin 2 and Pin 4,
whereby the lower potential must be connected to
contact Pin 2 and the higher potential to contact Pin 4.
Contact Pin 2 (– setpoint) can be connected to contact
Pin 3 (GND).
• Apply current to the VPPE-... with direct current
(Supply voltage U
V
= 24 VDC ±10 %).
• Pressurise the VPPE-... with a supply pressure (p1) at
least 1 bar higher than the maximum desired output
pressure. A proportional output pressure (p2) is set
automatically.
The following output pressure range is then assigned to
the setpoint signal range 0 … 10 V or 4 … 20 mA:
Setpoint
i
l
Output pressure range of the variant
p
signal range
2 bar
6 bar
10 bar
0 … 10 V or
4 … 20 mA
0.02 … 2 bar
0.06 … 6 bar
0.1 … 10 bar
5.1 Recommended parameter sets
The valves in all pressure variants are set at the factory
with Preset 2.
Preset
d ti
Preset
recommendation
1
2
3
Consuming device volumes
< 0.5 l
~ 0.5 l
> 0.5 l
5.2 VPPE display and meaning
Notes on the following table:
Preset, control behaviour:
You can select the desired factory parameter set in the
menu on the VPPE (Pr1, Pr2, Pr3).
Dis-
play
Meaning
Description
[An]
Analogue
Output: Analogue
[bAr]
bar
Pressure unit
[Eco]
ECO mode
Display switch-off (adjustable)
[Frc]
Force
Manual setpoint input
[HY]
Hysteresis
Spread, switch difference
[in]
Setpoint value
When
key is pressed (1 sec.), [in]
appears. When the key is released,
the setpoint value is displayed.
[Loc]
Lock
Input blocked with Pin code
[n.Hi]
Switch normally
closed
Contact (normally closed)
[n.Lo]
Switch normally
open
Contact (normally open)
[OFS]
Offset
Zero point lift (output pressure
without setpoint value)
[out]
Actual value
When
key is pressed (1 sec.), [out]
appears. When the key is released,
the actual value is displayed.
[PA]
Kilo
pascal
Pressure unit (in
K
Pa !)
[Pin]
Pin code
Enter value for locking (1 … 999)
[Pr1]
Preset 1
(see section 5.1)
[Pr2]
Preset 2
(see section 5.1)
[Pr3]
Preset 3
(see section 5.1)
[PSi]
psi
Pressure unit
[rES]
Reset
(factory setting)
Switch on device with pressed
+
+ Edit keys. Observe the
instruction in chapter 10.
[rnG]
Range
Pressure range adjustment
[Snr]
Display series
number
Switch on device with pressed
+ Edit keys: Series number is
displayed to 6 places, first [xxx.] than
[xxx], alternating approx. 2 sec.
[SOF]
Display software
version
Switch on device with pressed
+ Edit keys: Software version
appears
[SP]
Switching point
(see section 5.3)
[SP.H]
Switching point high Top switching point (see section 5.3)
[SP.L]
Switching point low
Bottom switching point
(see section 5.3)
[SP.O.]
Set point ok
Setpoint value reached
(see section 5.3)
[unL]
Unlock
Lock removed
Threshold value
comparator
(see section 5.3)
Window comparator
(see section 5.3)
[._..]
ECO mode activated
After x seconds (adjustable), a line
moves through the display [._..]
VPPE-3-1-1/8-...-E1
(LED-Display)
Operating instructions
Original: de
Festo AG & Co. KG
Postfach
D-73726 Esslingen
Phone:
+49/711/347-0
www.festo.de
0909a
749 698
