7
Commissioning
Note
• Commissioning should only be conducted by qualified personnel.
• When incompressible media are used (e.g. neutral water) pressure surges
arise in the piping system because of the switching of the valve. Before com-
missioning, check the compatibility of the devices in the system in order to
avoid damaging them. If necessary, adjust your application parameters.
• Note the information on the rating plate.
• Only start up the solenoid valve when it is fully installed and fitted.
• Check the connection points for tightness.
• Before commissioning, check to ensure the operating conditions and per-
missible limit values have been observed (
Technical Data).
8
Operation
• Comply with the operating conditions.
• Always observe the permissible limit values.
Warning
Danger of injury from the hot surfaces of the solenoid valve.
• Do not touch the solenoid valve during operation and immediately afterwards.
9
Dismantling
Warning
Danger of injury from hot media under pressure.
The media in the piping system and the solenoid valve can be hot and under
pressure.
• Allow the solenoid valve and pipelines to cool and de-pressurise them.
Note
The solenoid valve should only be dismantled by qualified personnel.
1. De-pressurise the pipeline.
2. Switch off the power supply.
3. Empty the pipeline and valve completely.
– Allow the solenoid valve and pipeline to cool.
– Make sure no one is located in front of the outlet opening.
– Catch discharging media in a suitable container.
4. Remove the solenoid valve from the pipeline (remove the electrical push-in
connection, mounting bracket and screws).
10
Replacement of the solenoid coil
In the case of repair, the solenoid coil can be replaced.
Warning
Danger of injury from the hot surfaces of the solenoid valve.
• Do not touch the solenoid valve during operation and immediately afterwards.
Dismantling:
1. Switch off the power supply.
2. Disconnect the electrical plug connection.
3. Leave the solenoid valve and solenoid coil to cool.
4. Loosen the retaining nut and remove the solenoid coil from the armature guiding
tube.
Installation:
1. Push the O-ring and solenoid coil over the armature guiding tube.
2. Fasten the solenoid coil with a shaped rubber part, retaining washer and hex nut
or with an O-ring and knurled nut (design-dependent).
– Tightening torque: 2 Nm.
11
Troubleshooting
Malfunction
Possible cause
Remedy
Solenoid valve
does not close
Solenoid valve faulty.
• Replace solenoid valve.
Flow direction is incorrect.
• Install the solenoid valve according to
the connection designation.
Nominal voltage still applied.
• Check electrical connection.
Solenoid valve
does not open
Solenoid coil or solenoid valve
faulty.
• Replace solenoid coil.
• Replace solenoid valve.
Supply pressure is too high.
• Reduce the supply pressure.
Nominal voltage is interrupted or
insufficient.
• Check voltage.
Fig. 3
• Send the defective solenoid coils to the Festo repair service. Information about
spare parts and auxiliary resources can be found at www.festo.com/spareparts.
12
Maintenance and care
• Check the solenoid valve at least once every 6 months for leakage.
• Check the function of the solenoid valve at least once every 6 months.
• Clean the exterior of the valve regularly with a soft cloth. The permissible clean-
ing agent is soap suds.
13
Technical Data
General
VZWD-...
Valve function
2/2-way, closed, single solenoid
Constructional design
Solenoid valve, directly actuated
Actuation type
Electrical
Mounting position
Any
Sealing principle
Soft
Operating medium
Filtered compressed air, grade of filtration 40 µm, lub-
ricated or unlubricated, neutral gases, vacuum, neut-
ral liquids, water, mineral oil
Direction of flow
Non-reversible
Max. viscosity
[mm
2
/s]
22
Grade of filtration
[µm]
40
Temperature of medium
[°C]
–10 ... +80
Ambient temperature
[°C]
–10 ... +35
Protection class
IP65 as per DIN EN 60529
Valve housing material
Brass, stainless steel 1.4305
1)
Seal material
Fluoro elastomer (FPM)
1)
In accordance with the details on name plate
Fig. 2
Fig. 4
Characteristics
VZWD-...
Nominal size
[mm]
1.0
1.5
2.0
2.5
3.0
4.0
5.0
6.0
Standard nominal flow rate
[l/min]
60
95
140
170
210
310
375
430
Flow factor
[m
3
/h]
0.06
0.09
0.13
0.16
0.2
0.3
0.35
0.4
Operating pressure
In accordance with the details on the name plate
Fig. 2
Max. tightening torque
– Pipe connection
Á
"
– Pipe connection
¼
"
– Coil mounting
[Nm]
[Nm]
[Nm]
10
35
2
Switching time air on
1)
– Solenoid coil VACS-H0P
– Solenoid coil VACS-H1P
[ms]
[ms]
25
20
Switching time air off
1)
– Solenoid coil VACS-H0P
– Solenoid coil VACS-H1P
[ms]
[ms]
10
18
Weight
– Solenoid coil VACS-H0P and VZWD-...-G18/N18
– Solenoid coil VACS-H0P and VZWD-...-G14/N14
– Solenoid coil VACS-H1P, VZWD-..., housing = brass-die cast
– Solenoid coil VACS-H1P, VZWD-..., housing = brass
– Solenoid coil VACS-H1P, VZWD-...-G18/N18, housing = stainless steel
– Solenoid coil VACS-H1P, VZWD-...-G14/N14, housing = stainless steel
[kg]
[kg]
[kg]
[kg]
[kg]
[kg]
0.30
0.35
0.55
0.60
0.50
0.65
1)
Longer switching times for liquid media dependent on the viscosity
Fig. 5
Electrical data
VZWD-...1
VZWD-...2A VZWD-...3A
Nominal voltage
– Direct current
– Alternating current (50/60 Hz)
[V DC]
[V AC]
24 (± 10 %)
–
–
110 (± 10 %)
–
230 (± 10 %)
Rated output for solenoid coil
VACS-H0P
[W]
[VA]
6.8
–
–
10.5/8
1)
–
10.5/7.6
1)
Rated output for solenoid coil
VACS-H1P
[W]
[VA]
11.0
–
–
19/16
1)
–
18/15
1)
Surge resistance
[kV]
–
2.5
4.0
Duty cycle
[%]
100 (continuous duty)
Degree of contamination
3 as per IEC 60664-1
Electrical connection
Device plug to DIN EN 175301, form A
Conductor cross section of connecting
cable
[mm
2
]
0.75 ... 1.5
Cable diameter of connecting cable
[mm]
5 ... 9
CE symbols in accordance with
2006/95/EC
No
Yes
1)
Switching power/holding capacity
Fig. 6
