Faults - WIKA PSD-3 Serie Betriebsanleitung

8. Faults

8. Faults
GB
In the event of any faults, first check whether the pressure switch is mounted correctly,
mechanically and electrically.
Error display
Via the instrument's display internal errors of the instrument are output.
The following table shows the error codes and their meaning.
Error
ATT1
ATT2
ATT3
ERR
OL
UL
Acknowledgement of an error display by pressing the "Enter" key.
Problem
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
30
Description
On changing the switch point, the system automatically reduces the reset point.
Zero-point adjustment error, current pressure is outside the limits
Password entered for menu access is incorrect
Internal error
Overpressure, measuring range exceeded > approx. 5% (display blinks)
Underpressure, below measuring range < approx. 5 % (display blinks)
Possible cause
Cable break
No/wrong power supply
Wiring error
Mechanical overload caused by over-
pressure
Overpressure limit exceeded
Mechanical overload caused by over-
pressure
Power supply too high/low
WIKA operating instructions pressure switch model PSD-3x
Measure
Check the continuity
Rectify the power supply
Observe the pin assignment
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