Warnings And Errors - WIKA PSD-4-ECO Mode D'emploi

6. Faults
Fault
No output signal
No output signal
No/wrong output signal
Constant output signal upon change
in pressure
Deviating zero point signal
Signal span too small
Signal span too small
Signal span drops

Warnings and errors

Via the digital display, the instrument's internal warnings and errors are output. The instrument continues to measure,
even when a warning exists. The output signal and the switching outputs are still output.
The following table shows the codes and their meaning.
WARNING Description
ATT1 On changing the switch point (SP1 / SP2) and the upper display limit value CLRH, the reset point / lower display
limit value (CLRL)) of the instrument is automatically reduced by the smallest hysteresis of 0.25 %.
ATT2 Zero point offset, current pressure is outside the limits
ATT3 Password entered for menu access is incorrect
ATT4 Unit cannot be displayed on digital display, previous unit is used
ILOC Menu locked over IO-Link
OL Overpressure, measuring range exceeded > approx. 3.125 % (digital display flashing)
PAS Prompt for password input
UL Underpressure, below measuring range < approx. 3.125 % (digital display flashing)
WIKA operating instructions, model PSD-4-ECO
Possible cause
Cable break
No/wrong power supply
Wiring error or switching of switching logic/
analogue signal
Mechanical overload caused by overpres-
sure
Overpressure limit exceeded
Mechanical overload caused by overpres-
sure
Power supply too high/low
Moisture has entered
Measure
Check the continuity
Rectify the power supply
Observe the pin assignment
Check the output configuration
Replace instrument; if it fails repeatedly,
contact the manufacturer
Observe the permissible overpressure limit
Replace instrument; if it fails repeatedly,
contact the manufacturer
Rectify the power supply
Fit the cable correctly
EN
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