SFAM
Festo – SFAM – 1103a English
43
Switching point and hysteresis with flow measurement for Out A / Out B
Threshold comparator
Window comparator
Switch element function NO (closer)
q
1
0
Hy
OUT
SP
[l/min]
Hy
Hy
q
1
0
OUT
SPLo
SPHi
[l/min]
Switching element function NC (opener)
q
1
0
SP
Hy
OUT
[l/min]
q
1
0
OUT
SPLo
SPHi
Hy
Hy
[l/min]
Tab. 2: Switching points (SP) and hysteresis (Hy) setting
Consumption switch impulse [CI] with air consumption measurement
Setting NO (closer)
Setting NC (opener)
CI
CI
t
t
0
OUTA
1
0
CI
100 ms
[l],
[m³]
CI
CI
t
t
0
OUTA
1
0
CI
100 ms
[l],
[m³]
Tab. 3: Consumption switch impulse
A threshold value for air consumption can be set with the consumption switch impulse [CI]. If the set
threshold value is reached, a switch impulse is emitted at the output Out A for 100 ms. With each
switch impulse, measurement of the air consumption is started again.
