PositionMaster EDP300 DIGITAL POSITIONER | OI/EDP300-EN REV. D 69
Menu: Diagnosis
Menu / parameter Value range Description
Diagnosis
Partial Stroke PS Configuration, PS
Interval, PS Start Now
‘Partial Stroke Test’ is used to test the mobility of the safety-related valves and fittings. For this
purpose, the valve is moved by a configurable amount in the direction of the safety position (venting of
positioner output 1).
If this does not happen within the expected time, an alarm is signaled. After the test, the valve follows
the current set point again. The start of the test is triggered using a time interval ‘PS Interval’, through
the digital input (configuration: Input/Output-> Digital Input-> DI Function -> Partial Stroke) or locally
on the device ‘PS Start Now’.
NOTICE
Property damage
During the test, the valve no longer follows the set point current. This change in the valve position
may have a detrimental effect on the process.
Histogram Pos. Timeout
Valve Movements
Valve Cycles
Mainly Used Pos.
Universal input
Use 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 individual
bar 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, control
quality, wear, and properties of the valves and fittings.
Pos. Timeout – Number of ‘positioning time too slow’ events
Valve Movements – Number of valve movements
Valve Cycles – Number of valve lifts
Mainly Used Pos. – Most used valve position
Universal input – Universal input value
Travel Counter 0 to 200,000,000 The ‘Travel Counter’ is used to determine the positioner travel. The counter adds up the distance
traveled 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 exceeds
the defined hysteresis is counted (default setting: 50%). The hysteresis can only be set / changed using
a 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.
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