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6. Faults
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, the reset point of the instrument is automatically reduced to the smallest hysteresis
of 0.25 %.
ATT2
Adjustability of zero point, 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
ATT5
Maximum turndown exceeded
ILOC
Menu locked over IO-Link
OL
Overpressure, measuring range exceeded > approx. 3.125 % (digital display flashing)
PAS
Prompt for password input
UL
Vacuum, below measuring range < approx. 3.125 % (digital display flashing)
Error
Description
ERR
Internal error (restarting the instrument or resetting to factory settings can provide a solution)
The analogue output controls the alarm signal ≤ 3.6 mA (4 ... 20 mA output signal) or ≥ 11 V (0 ... 10 V output
signal) in accordance with NAMUR43
The switching outputs keep the current switching state (output open or closed)
ERR1
Instrument temperature exceeded/too low or supply voltage too low
The analogue output is output. There are restrictions with respect to accuracy (temperature influence) and
maximum analogue value (supply voltage too low)
The switching outputs keep the current switching state (output open or closed)
WIKA operating instructions pressure switch, model PSD-4
EN
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