6
Electronic Pressure Sensor 34D
Operation manual
7503756000000050 05/2019
4. Function
The unit displays the current system pressure.
It generates output signals according to the operating mode and the parameter setting.
It moreover provides the process data via IO-Link.
The unit is laid out for fully bidirectional communication. So, the following options are possible:
o
Remote display: reading and display of the current system pressure.
o
Remote parameter setting: reading and changing the current parameter setting.
4.1 Communication, parameter setting, evaluation
OUT1 (Pin 4)
Switching signal for system pressure limit value
Communication via IO-Link
OUT2 (Pin 2)
Analog signal 4 ... 20mA / 0 ... 10V
4.2 Switching function
OUTx changes its switching state if it is above or below the set switching limits (SP1, rP1). The
following switching functions can be selected:
Hysteresis function / normally open: [ou1] = [Hno] (→ fig. 1)
Hysteresis function / normally closed: [ou1] = [Hnc] (→ fig. 1)
First the set point (SP1) is set, then the reset point (rP1). The hysteresis defined remains even if
SPx is changed again.
Window function / normally open: [ou1] = [Fno] (→ fig. 2).
Window function / normally closed: [ou1] = [Fnc] (→ fig. 2).
The width of the window can be set by means of the difference b
etween FH1 and FL1. FH1 =
upper value, FL1 = lower value.
P = system pressure; HY = hysteresis; FE = window
t
P
SP
rP
1
0
1
0
Hno
Hnc
HY
FH
FL
1
2
