Menu: Diagnostics - ABB PositionMaster EDP300 Operating Instruction

8.4.7

Menu: Diagnostics

... / Diagnostics
Menu / Parameter Value range
PARTIAL STROKE PS CONFIGURATION
PS Interval
PS Start Now
HISTOGRAM Pos. Timeout
Valve Movements
Valve Cycles
Mainly Used Pos.
Universal Input
Travel Counter 0 ... 200,000,000
Movement Counter 0 ... 200,000,000
Reset Histograms
Reset Status
Description
"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 setpoint again. The start of the test is
triggered by means of a time interval ("PS Interval"), via the digital input (configuration:
Input/Output-> Digital Input-> DI Function -> Partial Stroke Test), or locally at the device ("PS
Start Now").
NOTICE – Property damage!
During the test, the valve no longer follows the setpoint current. This change in the
valve position may have a detrimental effect on the process.
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 "Stroke time too slow"
Valve Movements – Number of valve movements
Valve Cycles – Number of valve strokes
Mainly Used Pos. - Frequently used valve position
Universal Input – Values of universal input
The "Travel Counter" is used to determine the positioner travel. The counter adds up the distance
travelled as a % of the set "working 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.
The "Movement Counter" is used to determine the positioner'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.
Use this parameter to reset the histograms.
Use this parameter to reset the diagnostic status.
PositionMaster EDP300 | OI/EDP300-EN 45