Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual page 66

Description of device parameters
Description of behavior of
SP2 / RP2
66
The hysteresis is implemented using the SP2 and RP2 parameters. Since the parameter
settings depend on one another, the parameters are described all together.
The switch point "SP2" and switchback point "RP2" can be defined with these functions (e.g.
for pump control). When the set switch point "SP2" is reached (with increasing pressure),
an electrical signal change takes place at the switch output. When the set switchback point
"RP2" is reached (with decreasing pressure), an electrical signal change takes place at the
switch output. The difference between the value of the switch point "SP2" and the
switchback point "RP2" is known as the hysteresis. The configured value for the switch
point "SP2" must be greater than the switchback point "RP2"! A diagnostic message is
displayed if a switch point "SP2" is entered that is ≤ the switchback point "RP2". While it is
possible to make this entry, it does not take effect in the device. The entry must be
corrected!
p
SP2
RP2
1
0
1
0
0 0-signal. Output open in quiescent state.
1 1-signal. Output closed in quiescent state.
2 Hysteresis
SP2 Switch point
RP2 Switchback point
HNO NO contact
HNC NC contact
To prevent switch-on and switch-off if values are around the switch point "SP2" or
switchback point "RP2", a delay can be set for the relevant points. In this regard, see
the Switching delay time, output 2 (dS2) and Switchback delay time, output 2
(dR2) parameter descriptions.
Ceraphant PTC31B, PTP31B, PTP33B IO-Link
2
HNO
HNC
t
A0037011
Endress+Hauser