WIKA A-1200 Manual De Instrucciones página 14

5. Commissioning, operation
Window function (configurable via teach function or IO-Link)
The window function allows for the control of a defined range.
When the system pressure is between window high (FH) and window low (FL),
the output switches on.
EN
Normally open contact (FNO): Active
■
Normally closed contact (FNC): Inactive
■
When the system pressure is outside window high (FH) and window low (FL), the
output does not switch on.
Normally open contact (FNO): Inactive
■
Normally closed contact (FNC): Active
■
Adjustability:
Switch point/Window High
■
The value must be higher than the reset point or window low. The minimum
difference is 0.25 % of the measuring range. With a setting less than 0.25 %,
the reset point will be adjusted automatically.
Reset point/window low
■
The value must be lower than the switch point or window high. The minimum difference is 0.25 % of the measuring
range. With a setting less than 0.25 %, the switch point will be adjusted automatically.
Delay times (0 ... 65 s) (configurable via IO-Link)
This makes it possible to filter out unwanted pressure peaks of a short duration or
a high frequency.
The pressure must be present for at least a certain pre-set time for the output to
switch on. The output does not immediately change its status when it reaches the
switching event (SP), but rather only after the pre-set delay time (DS).
The output only switches back when the system pressure has fallen down to the
reset point (PR) and stays at or below the reset point (RP) for at least the pre-set
delay time (DR).
If the switching event is no longer present after the delay time, the switch output
does not change.
14 WIKA operating instructions, pressure sensor, model A-1200
Fig.: Window function
Fig.: Delay times