HNS 3000
Page 10
Version 2014/11/28
HYDAC ELECTRONIC GMBH
Part No. 669927
7 Output
settings
7.1 SWITCHING
OUTPUTS
The HNS 3000 has either 1, 2 or 4 switching outputs.
The following switching behaviour can be set in the basic settings:
7.1.1 Switch point setting (SP)
One switch point and one hysteresis can be set to each switching output. The particular
output will switch when the pre-set switch point is reached and then switch back when the
level drops below the switch-back point. The switch-back point is determined by the pre-
set hysteresis.
(switch-back point = switching point minus switching hysteresis)
Abbreviations: "
S.P.1
", "
S.P.2
", "
S.P.3
" , "
S.P.4
" = switching point 1 to 4
"
HyS.1
", "
HyS.2
", "
HyS.3
" , "
HyS.4
" = hysteresis 1 to 4
7.1.2 Window mode (WIN)
Operating in window mode allows the unit to monitor a range. An upper and a lower
switch point defining the range can be assigned to each switching output.
The particular output is switched when the level or temperature enters this range.
The output switches back when leaving the range. The lower switch-back value is
just below the lower switching value (lower switching value minus 1% FS, see section
8.4). The upper switch-back value is just above the upper switching value (upper
switching value plus 1% FS, see section 8.4). The range between the switch value
and the switch-back value forms a safety margin which prevents unwanted switching
operations from being triggered.
Example for switching output 1 (normally open):
Abbreviations: "
HI 1
", "
HI 4
" = High level 1 to 4 = upper switching point 1 to 4
"
Lo 1
"to "
Lo 4
" = Low level 1 to 4 = lower switching point 1 to 4
FS (full scale) = relative to the complete measuring range
NOTICE:
The window function will only operate properly (switch on and off), if all switching values
(including the safety zone) are greater than 0 cm or -23 °C (model with temperature sensor),
and are within the unit's nominal measuring range.
Safety zone
Safety zone
Switch-back
value
Switching value
Switching value
Switch-back
value
on
on
off
off
off
on
hi.1 plus 1% FS
Hi.1
Lo.1
Lo.1 minus 1% FS
Measured
value
T
Summary of Contents for HNS 3000 Series
Page 91: ...Notizen Notes Notes ...
Page 92: ...Notizen Notes Notes ...
