Samson 3969, Mounting And Operating Instructions

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20 EB 3969 EN
Design and principle of operation
Pneumatic data for solenoid valve with K
VS
0.3, actuated on one side
Switching function 3/2-way function with exhaust air feedback
K
VS
1)
0.3
Safety approval SIL 2)
Compressed air quality
according to ISO 8573-1
Max. particle size and density: Class 4
Oil content: Class 3
Pressure dew point: Class 3 or at least 10 K below the lowest ambient temperature
to be expected
Pilot supply Medium Instrument air (free from corrosive substances) oil or non-corrosive gases
Pressure
3)
1.4 to 10 bar
Operating medium Instrument air, free from corrosive substances
Operating pressure Max. 10 bar
Switching time ≤60 ms
Connection G ¼, ¼ NPT or NAMUR interface ¼ 4)
Weight 0.7 kg
1.05 kg (with adapter plate)
1)
The air flow rate when p
1
= 2.4 bar and p
2
= 1.0 bar is calculated using the following formula:
Q = K
VS
x 36.22 in m³/h.
2)
SIL according to IEC 61508
3)
When using the solenoid valve with an operating pressure of 10 bar, a minimum pilot pressure of 1.9 bar is
required.
4)
NAMUR interface according to VDI/VDE 3845 and VDI/VDE 3847