Festo SDE5 Serie Instrucciones De Utilizacion página 32

SDE5-...
b) Switching pressure setting on the SDE5-...-FP-... :
Please note
The sequence of the teach pressures for the switching pressure setting affects
the switch element function (normally-closed/normally-open) of the
SDE5-...-FP-... .
S Consider the following relationship:
TP1 < TP2:
TP1 > (TP2 + 2 % full scale): Programming as normally-closed (NC)
Mode 1:
Threshold
value
comparator
Mode 2:
Hysteresis
comparator
Mode 3:
Window
comparator
Fig. 20
1. Note the teach pressures TP1 and TP2, taking the above instruction into
consideration.
2. Pressurize the SDE5-... with the first teach pressure (TP1).
3. Press the EDIT button 1 until the LED starts to flash (longer than 2 s).
When the button is released, the SDE5-... saves the first teach pressure.
The LED then continues to flash.
32
Programming as normally-open (NO)
Switch element function NO
(TP1 < TP2)
OUT
1
Hy
0
TP1 SP TP2
OUT
1
Hy
0
TP1 SP=TP2
OUT
1
Hy
Hy
0
SP =TP1 SP =TP2
min max
Switch element function NC
TP1 > (TP2 + 2 % FS)
OUT
1
Hy
P 0
TP2 SP TP1
OUT
1
Hy
P 0
TP2 SP=TP1
OUT
1
Hy
P 0
SP =TP2 SP
min
Festo SDE-... 0204NH English
P
P
Hy
P
=TP1
max