Hydac HNS 526 - Window Function Setting (Fno; Fnc))

HNS 526 13
Version: 06.10.2014 HYDAC ELECTRONIC GMBH Part No.: 669869
E
7.1.2 Window function setting (Fno / Fnc))
The window function enables a range to be monitored. An upper and a lower switch point
which defines the range can be assigned to each switching output.
The relevant output will then switch when the level enters this range.
When the level leaves this range, i.e. when the switch-back point has been reached, the
output switches back. The lower switch-back value is just below the lower switch value. The
upper switch-back value is just above the upper switch value. The range between the switch
value and the switch-back value forms a safety margin which prevents unwanted switching
operations from being triggered (such as those triggered by the pulsations of a pump).
Example for switching output 1 (N/C and N/O function):
Abbreviations: "FH1", "FH2" = upper switch value 1 / upper switch value 2
"FL1", "FL2" = lower switch value 1 / lower switch value 2
"FNO" = N/O when window function is active
"FNC" = N/C when window function is active
Notes:
■ It is only possible to set the switch point (SP) if it is higher than the respective
switch-back point (RP). In the case of low SPs we recommend setting the RP first.
■ The window function only works properly (switching on and off) if all switch values
(including the safety margin) are higher than the blind zone and below the
maximum scanning range.
Rückschaltwert
Schaltwert
Schaltwert
Sicherheitszone
Sicherheitszone
Ein
A
us
FL1 minus 1 %FS
FL1
FH1
t
Ein
Ein
A
us
A
us
Ein
A
us
FNO
FNC
Schließerfunktion
Öffnerfunktion
Schaltwert
Schaltwert
Sicherheitszone
Sicherheitszone
Ein
A
us
FL1
FH1
t
Ein
Ein
A
us
A
us
Ein
A
us
FNO
FNC
FH1 plus 1 %FS
Rückschaltwert
On
Normally open function
Of
f
On
Normally closed function
Of
f
Reverse switch point
Switch point
Switch point
Reverse switch point
Safety zone
Safety zone
On
On
Of
f
Of
f
L
e
v
e
l