21
Electronic Pressure Sensor 34D
Operation manual
7503756000000050 05/2019
10. Operation
After power on, the unit is in the Run mode (= normal operating mode). It carries out its
measurement and evaluation functions and provides output signals according to the set
parameters.
Operating indicators → 7 Operating and display elements.
10.1 Read set parameters
►
Press [●].
►
Press [▲] or [▼] until the requested parame
ter is displayed.
►
Briefly press [●].
o
The unit displays the corresponding parameter value for approx. 30 s; then it changes
to the process value display.
10.2 Self-diagnosis / error indications
The unit has many self-diagnostic options.
It monitors itself automatically during operation.
Warnings and faults are displayed (even if the display is deactivated), in addition they are
available via IO-Link.
Display
Status-
LED
OUT1
Fault / Warning
Corrective measures
none
(F**) Supply voltage too low
►
Check / correct the supply voltage
SC1
flashes (F**) Excessive current at swit-
ching output OUT1 *
)
►
Check switching output OUT1 for
short-circuit or excessive current;
remove the fault.
Loc
(W **) Parameterization via
pushbuttons locked.
►
Unlock buttons → 9.1
Parameter setting in general
Locking / unlocking
C.Loc
(W**) Parameter setting locked
via pushbuttons, para-meter
setting is active via IO-Link
communication (→ 9.1)
►
Wait until parameter setting via IO-
Link is finished.
S.Loc
(W **) Setting buttons locked via
parameter software; Parameter
change is rejected → 9.1.
►
Unlocking only possible via IO-Link
interface / parameter software.
OL
(W**) Process value too high.
(measuring range exceeded)
►
Check / reduce system pressure /
select unit with corresponding
measuring range.
UL
(W**) Process value too low
(value below measuring range)
►
Check / increase system pressure /
select unit with corresponding
measuring range.
Measuring range
Err
flashes (F**) Internal fault / malfunction.
►
Contact the manufacturer.
*) The output remains deactivated as long as the excessive current / short circuit continues
**) F= Fault, W= Warning