Endress+Hauser Liquiphant FTL31 IO-Link Operating Instructions Manual page 43

Liquiphant FTL31 IO-Link
Description
%
rP2 rP1
SP2 SP1
OU1
OU2
0 0-signal, output open
1 1-signal, output closed
A Hysteresis (difference between the value of the switch point SP1/SP2 and the value of the switchback
point rP1/rP2)
% Fork frequency (100 % corresponds to frequency in air / uncovered)
HNO Normally open contact (MIN)
HNC Normally closed contact (MAX)
SP1 Switch point 1 / SP2: Switch point 2
rP1 Switchback point 1 / rP2: Switchback point 2
Endress+Hauser
The switching sensitivity of the sensor can be configured
using the switch point and switchback point. The switching
sensitivity can be adapted to the medium.
• Sensor switches if there is slight coverage = very
sensitive.
• Sensor switches if there is heavy buildup = not sensitive.
The set value for switch point SP1/SP2 must be less than
switchback point rP1/rP2!
A diagnostic message is displayed if a switch point SP1/SP2
is entered that is ≥ switchback point rP1/rP2.
When the set switchback point rP1/rP2 is reached, an
electrical signal change takes place again at the switch
output (OU1/OU2). The difference between the value of the
switch point SP1/SP2 and the value of the switchback point
rP1/rP2 is known as the hysteresis.
Description of device parameters
A
1
HNO (MIN)
0
1
HNC (MAX)
0
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