Digital Display; Output Function; Switching Outputs; Switching Point Setting - HYDAC ELECTRONIC EDS 3000 Manuel D'instructions

4.

Digital display

After switching on the supply voltage, the unit briefly displays "EdS" and then
displays the actual pressure (basic setting).
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in the basic settings, the display can be altered as follows:
 display of the maximum value "TOP"
this is the largest value measured in the system since the unit was
switched on or was last re-set.
 display of the pre-set switching point "S.P. 1", "S.P. 2"
depending on the model, switching point 1 or switching point 2
can be permanently displayed.
 display off "OFF"
the display is switched off.
depending on the setting "TOP", "S.P. 1", "S.P. 2" or "OFF" appears briefly
in the display following the switch-on message. the actual pressure can be
displayed briefly by pressing the  or the  key.
 in the setting "display of the actual pressure", it is possible to display the
maximum value by pressing the  or the key. this is displayed for 3 s.
The maximum value can be re-set in each display mode by briefly pressing
the  and the  keys simultaneously. this procedure is acknowledged by
the message "rES" in the display .
notes:
 if the actual pressure exceeds the nominal pressure of the unit, it can no
longer be displayed and the display begins to flash.
 if the actual pressure is below 0.75 % of the nominal range,
then 0 is displayed.
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5.

Output function

5.1. switcHing outputs

the eds 3000 has 1 or 2 switching outputs. the following switching settings
can be made under basic settings:
5.1.1. switching point setting (sp)
one switching point and one hysteresis can be set for each switching output.
the respective output switches when the pre-set switching point is reached and
switches back when the pressure falls below the switch-back point.
the switch-back point is determined by the pre-set hysteresis
(switch-back point = switching point minus hysteresis).
abbreviations: "S.P.1", "S.P.2"
"H.Y.1", "H.Y.2"
5.1.2. window function setting (win)
the window function enables a range to be monitored. for each switching output,
an upper and a lower switching value can be input which determine the range.
the respective output switches when the pressure enters this range.
upon leaving the range, i.e. when the switch-back value has been reached, the
output switches back. the lower switch-back value is just below the lower switching
value (lower switching value minus three times the increment, see point 5.4). the
upper switch-back value is just above the upper switching value (upper switching
value plus three times the increment, see point 5.4). the area between switching
value and switch-back value forms a safety zone which prevents unwanted
switching operations from occurring (e.g. triggered by pulsations from a pump).
example for switching output 1 (normally open function):
P
Off
hi.1 plus 1% FS
Safety zone
hi.1
On
Lo.1
Safety zone
Lo.1 minus 1% FS
On
Off
abbreviations:
"hi.1", "hi.2" = High level 1 or 2
"Lo.1", "Lo.2" = Low level 1 or 2
FS (Full Scale) = relative to the full measuring range
note: the window function only operates correctly (switching on and off),
when all switching values (including the safety zone) are greater
than 0 bar and lower than the nominal pressure range.
= switching point 1 or 2
= hysteresis 1 or 2
Switch-back value
Switching value
On
Switching value
Switch-back value
Off
t
= upper switching value 1 or 2
= lower switching value 1 or 2
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