HYDAC EDS 1700 User Manual
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5. Output function
5.1. RELAY OUTPUTS
The EDS 1700 has 4 relay outputs. One switching point and one switch-back
point and/or one hysteresis can be set for each relay. The appropriate relay
pulls in when the pre-set switching point is reached and drops back when the
pressure falls below the switch-back point.
Whether the unit operates with adjustable hystereses or adjustable
switch-back points is determined via the "switch-back mode", in the basic
settings (see point 7).
Switch-back mode is set to "hysteresis":
The pre-set hysteresis determines the switch-back point (switch-back point =
switching point minus hysteresis).
Switch-back mode is set to "switch-back point":
The switch-back point is set directly.
Abbreviations:
"S.P.1", .. "S.P.4"
= switching points 1..4
"H.Y.1", .. "H.Y.4"
= hystereses 1..4
"r.S.P.1", .. "r.S.P.4" = switch-back points 1..4
5.2. ANALOGUE OUTPUT
Analogue output signal 4..20 mA or 0..10 V
(adjustable in the "Basic setting" menu)
5.3. SETTING THE SWITCHING POINTS AND SWITCH-BACK POINTS /
HYSTERESES
l Press appropriate key .
l Switching point/switch-back point/hysteresis number is displayed
e.g. "S.P. 1"
l After 2 seconds the current setting flashes.
l Using the "+" and "-" keys, alter the setting.
l After 3 seconds the display switches back.
5.3.1 Setting a switching point
pressure
display
press ON
key
display
set switching point
= larger value
= smaller value
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