Guth Ventiltechnik DigiPos - Positioner Accuracy; Software Programming;Characteristic Curve Adjustment; Maintenance and Care; Faults

17.7.17
Elektropneumatic positioner DigiPos
6. Commissioning
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6 . 3 Positioner accuracy
The positioning accuracy can be adjusted with the left-hand potentiometer. At the left end stop the
accuracy is +/-0.4%. At the right end stop the accuracy is +/-2.9%. The positioner is set at the works
to an accuracy of +/-1%. To this purpose the potentiometer is set at an angle of 45 degrees away
from the left-hand end stop. The higher the accuracy, the more often the DigiPos must readjust.
Generally a setting of +/-1% is completely sufficient.
6 . 4 Software Programming/Characteristic Curve Adjustment
Adjustment of the DigiPos with the commissioning software may only be performed by trained per-
sonnel. For this reason procedures are described in a separate manual.
6 . 5 Maintenance and Care
• Always observe the technical data given in this manual.
• The steel protective cover of the DigiPos must always be screwed firmly in place. If this is not the
case, protection class IP 65 cannot be guaranteed and the positioner can suffer damage resulting
from penetrating media.
6 . 6 Faults
6 . 6 . 1 Electronic error codes
If the positioner detects an error, the red LED flashes, irrespective of the position. At the same time
an error code is shown on the display which alternates with the position indication.
Tab. 6 Electronic error codes
6 . 6 . 2 Other faults
The positioner no longer reacts:
• Check the supply voltage for 24 V DC
• Check the cable for interruption and correct terminal connection
• Check the supply air connection; check the supply air pressure
• Check the position of the DIP switches on the circuit board
• Inspect the valve spindle and actuator to ensure that no mechanical blockage is responsible for
the fault. Always disconnect the system from the voltage, pressure and media beforehand.
Display Error
C 1 The setpoint input receives a signal current of below 3.5 mA.
C 2 It was not possible to perform stroke alignment.
C 3 The supply voltage is below 18 V.
ATTENTION
• If it is not possible to remedy the faults, please contact Guth Ventiltechnik GmbH immediately.