Cerabar PMP23 IO-Link
Commissioning
Hauser
29
9.5.3
Switch output (OU1)
Behavior of switch output
Switch point value / Upper value for pressure window, output 1 (SP1 / FH1)
Switchback point value / Lower value for pressure window, output 1 (RP1 / FL1)
Navigation
Application → Switch output (OU1) → Switch point value / Upper value for pressure
window, output 1 (SP1 / FH1)
Application → Switch output (OU1) → Switchback point value / Lower value for pressure
window, output 1 (RP1 / FL1)
Prerequisite
The following functions are available only if a hysteresis function has been configured for
the switch output (output 1 (Ou1)).
Description of behavior of
SP1 / RP1
The hysteresis is implemented using the
SP1
and
RP1
parameters. Since the parameter
settings depend on one another, the parameters are described all together.
The switch point "SP1" and switchback point "RP1" can be defined with these functions (e.g.
for pump control). When the set switch point "SP1" is reached (with increasing pressure),
an electrical signal change takes place at the switch output. When the set switchback point
"RP1" is reached (with decreasing pressure), an electrical signal change takes place at the
switch output. The difference between the value of switch point "SP1" and the value of
switchback point "RP1" is known as the hysteresis. The configured value for the switch
point "SP1" must be greater than the switchback point "RP1"! A diagnostic message is
displayed if a switch point "SP1" is entered that is ≤ the switchback point "RP1". While it is
possible to make this entry, it does not take effect in the device. The entry must be
corrected!
1
2
0
SP1
RP1
0
HNO
p
t
1
HNC
A0034025
0
0-signal. Output open in quiescent state.
1
1-signal. Output closed in quiescent state.
2
Hysteresis
SP1 Switch point
RP1 Switchback point
HNO Closing
HNC NC contact
To prevent switch-on and switch-off if values are around the switch point "SP1" or
switchback point "RP1", a delay can be set for the relevant points. In this regard, see
the
Switching delay time, output 1 (dS1)
and
Switchback delay time, output 1
(dR1)
parameter descriptions.
