Proportional flow control valve
VPCF-6-L-8-...
Festo AG & Co. KG
Postfach
73726 Esslingen
Germany
+49 711 347-0
www.festo.com
Operating instructions
8066867
1611a
[8066869]
Original: de
Proportional flow control valve VPCF-6-L-8...
English
. . . . . . . . . . . . . . . . . . . . . . .
1
Safety
1.1 Use for intended purpose
The proportional flow control valve VPCF-6-L-8-... is intended for regulation of a
flow proportional to a specified setpoint value.
The flow control valve is intended for use in an industrial environment. Outside of
industrial environments, e.g. in commercial and mixed-residential areas, actions to
suppress interference may have to be taken.
1.2 Safety instructions
Use the flow control valve only in its original status without unauthorised modi
fications.
Use the flow control valve only in an excellent technical status.
Comply with all applicable national and international regulations.
Comply with specified limits (
è
Chapter 12, Technical data).
Take into consideration the ambient conditions at the location of use.
1.3 Training of skilled personnel
Only qualified personnel may perform installation, commissioning, maintenance
and disassembly of the flow control valve. The qualified personnel must be familiar
with installation and operation of electrical and pneumatic control systems.
2
Structure
2
4
5
1
6
7
8
9
7
aJ
aA
3
6
1
Electrical connection, plug M12
2
Service interface, sealed with cover
cap (only for Festo service staff )
3
Air port (2)
4
Threaded holes M5 (10 mm deep)
for mounting of the flow control
valve,
è
Fig. 6
5
Hole for earth connection (FE),
è
Fig. 6
6
Through-holes for mounting the
flow control valve
7
Threaded holes M5 (10 mm deep)
for mounting of the flow control
valve
8
Exhaust air port (3)
9
Hole for earth connection (FE)
aJ
Compressed air port (1)
aA
LEDs
Fig. 1
3
Product variants
Characteristic
Type code
Description
Basic function
VPCF
Propor tional flow control valve
Nominal width
6
6 mm
Valve type
L
In-line valve
Valve function
8
3/3-way valve
Pneumatic port
G38
G3/8
Pressure range
6
0 … 6 bar
10
0 … 10 bar
Setpoint specification
V1
Voltage variant 0 … 10 V
A4
Current variant 4 … 20 mA
Display type
E
LED
EU certification
EX2
II 3G, II 3D
Fig. 2
4
Function
The flow control valve is a proportional directional control valve with integrated
flow regulator. The flow regulator determines the current flow, based on its intern
al measured values, and compares it to the setpoint value. If the current value
deviates from the setpoint, the valve is actuated until the flow has reached the
setpoint value.
Fig. 3
5
Transport and storage
Store the product in a dry, UV- and corrosion-protected environment. Ensure
storage times are short.
6
Installation
6.1 Mechanical installation
Make sure there is sufficient space for the connecting line and tubing connec
tions. In this way you will prevent the connecting lines and the tubes from being
broken.
Place the flow control valve as close as possible to the consumer. This leads to
improved control precision and shorter response times.
Mounting options of the flow control valve:
– Through-hold mounting through 2 lateral through-holes
– Direct mounting through 4 threaded holes (M5x10 mm) on the underside of the
flow control valve
– Direct mounting through 4 threaded holes (M5x10 mm) on the front side of the
flow control valve
Through-hole fastening
Direct mounting
Side
Bottom
Front
1
2
2
1
Screw M6 (2x) for through-hole fastening
2
Screw M5 (4x) for direct mounting
Fig. 4
Fasten flow control valve with screws
1
or
2
.
– Observe the tightening torque (
è
Fig. 5).
– In the case of direct mounting from below or from the front: Also observe the
maximum screw-in depth (
è
Fig. 5).
Type of mounting
Tightening torque [Nm]
Max. screw-in depth [mm]
Through-hole fastening
Max. 9 Nm
–
Direct mounting from below
5 Nm
10 mm
Direct mounting on the front
5 Nm
10 mm
Fig. 5
