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26
Technical Data
6.6
Pneumatic data
Control medium:
Air, neutral gases
Quality classes in accordance with ISO 8573-1
(5 µm filter recommended)
Dust content
Quality class 7:
max. particle size 40 μm,
max. particle density 10 mg/m3
Water content
Quality class 3:
max. pressure dew point -20 °C or min. 10 °C below
the lowest operating temperature
Oil content
Quality class X:
max. 25 mg/m3
Temperature range
of compressed air:
-10 ... +50 °C
Pressure range:
2.5 ... 8 bar
Air rate solenoid valve:
QNn = 110 IN/min (for ventilation and deaeration, aeration)
(110 IN/min
- supplied state
200 IN/min
- maximum typical flow rate)
(QNn value according to definition when pressure drops from 7 to 6 bar
absolute at +20 °C)
Connections:
Intake and exhaust air connection (1/P, 3/R): G1/4
Working connections (2/A1...3):
G1/8
Setting the intake and exhaust air at the solenoid valve using flow restriction screws
The intake and exhaust air can be set separately for each solenoid valve using flow restriction screws, in
order to be able to affect the expansion and retraction rates of the process valve (see figure below).
For details see
„9.3 Flow restriction function of the solenoid valves“ on page
38.
Flow restriction screw
Exhaust air R
Flow restriction screw
Intake air P
Red hand lever of the
mechanical manual
override:
Hand lever position:
left: 0
right: 1
Fig. 6:
Flow restriction screws and mechanical manual override of the solenoid valves
english
Control Head Type 8681
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