PositionMaster EDP300 DIGITAL POSITIONER | OI/EDP300-EN REV. D 69Menu: DiagnosisMenu / parameter Value range DescriptionDiagnosisPartial Stroke PS Configuration, PSInterval, PS Start Now‘Partial Stroke Test’ is used to test the mobility of the safety-related valves and fittings. For thispurpose, the valve is moved by a configurable amount in the direction of the safety position (venting ofpositioner output 1).If this does not happen within the expected time, an alarm is signaled. After the test, the valve followsthe current set point again. The start of the test is triggered using a time interval ‘PS Interval’, throughthe digital input (configuration: Input/Output-> Digital Input-> DI Function -> Partial Stroke) or locallyon the device ‘PS Start Now’.NOTICEProperty damageDuring the test, the valve no longer follows the set point current. This change in the valve positionmay have a detrimental effect on the process.Histogram Pos. TimeoutValve MovementsValve CyclesMainly Used Pos.Universal inputUse this parameter to select which histogram is to be displayed.In this menu, the number of values or events is assigned to a valve range and displayed as an individualbar graph. The valve ranges are divided up as follows:< 0 %, 0 – 10 %, 10 – 20 %, 20 – 30 %, 30 – 40 %, 40 – 50 %, 50 – 60%, 60 – 70 %, 70 – 80 %, 80 – 90%, 90– 100 %, > 100 %The histograms support valve diagnostics and allow conclusions to be drawn about the valve, controlquality, wear, and properties of the valves and fittings.Pos. Timeout – Number of ‘positioning time too slow’ eventsValve Movements – Number of valve movementsValve Cycles – Number of valve liftsMainly Used Pos. – Most used valve positionUniversal input – Universal input valueTravel Counter 0 to 200,000,000 The ‘Travel Counter’ is used to determine the positioner travel. The counter adds up the distancetraveled as a % of the set ‘operating range’.Limit values can be configured for the counter (only via DTM / EDD).If the ‘Travel Counter’ reaches a limit value, a message is output.Movement Counter 0 to 200,000,000 The ‘Movement Counter’ is used to determine the actuator's movements. Any movement that exceedsthe defined hysteresis is counted (default setting: 50%). The hysteresis can only be set / changed usinga PC (DTM / EDD). Limit values can be configured for the movement counter (only via DTM / EDD).If the counter reaches a limit value, a message is output.Reset Histograms Use this parameter to reset the histograms.Reset Status Use this parameter to reset the diagnostic status.