8 EDS 300
Status: 19.09.2018 HYDAC ELECTRONIC GMBH Part No.: 669648 E
8 Output function
8.1 SWITCHING OUTPUTS
The EDS 300 has 1 or 2 switching outputs. The following settings can be made under the basic
setting:
8.1.1 Switching point setting (SP)
One switching point and one hysteresis can be set for each switching output. The relevant 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" = switching point 1 or 2
"H.Y.1", "H.Y.2" = hysteresis 1 or 2
8.1.2 Window function setting (WIN)
The window function enables a range to be monitored. For each switching output, in each case an
upper and a lower switching value can be input to determine the range.
The relevant output switches when the pressure enters this range. When 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 8.4). The upper switch-back value is just above the upper switching value
(upper switching value plus three times the increment, see point 8.4). The area between switching
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):
Abbreviations:
"hi.1", "hi.2" = High level 1 or 2 = upper switching value 1 or 2
"Lo.1", "Lo.2" = Low level 1 or 2 = lower switching value 1 or 2
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.
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