Diagnostic Value '12.Pst - Monitoring Of Partial Stroke Test - Siemens SIPART PS2 Operating Instructions Manual

Purpose:
Description:
10.2.4.10

Diagnostic value '12.PST - Monitoring of partial stroke test'

Indication on the display: ● OFF
Purpose:
SIPART PS2 with and without HART
Operating Instructions, 05/2017, A5E00074631-AC
You can use this diagnostics parameter to read the last test result
or start an offline leakage test with which you can detect leakages
in the actuator or in the pipe installation. Display is percent stroke
per minute referred to the total stroke. A test result originates from
one of the following options:
● Function '11.LEAK' has already been carried out.
● Leakage test was already carried out during initialization, see
procedure of RUN 3 in section Sequence of automatic
initialization (Page 108).
● 'Offline leakage test' function was already executed by a HOST
system.
"-" in the display can have the following causes:
● A leakage test has not yet been carried out.
● Resetting to the factory settings was carried out using the
'50.PRST' Preset (Page 164) > ALL parameter.
● Positioner is not initialized.
How to start the test
1. Move the actuator to the position at which you wish to start the
test.
2. In 'Diagnostics' mode, go to the '11.LEAK' diagnostic value as
described in section Display of diagnostics values (Page 198).
3. Start the function by pressing the
'Strt' is output in the display. The function is started after 5 seconds.
'tESt' and the current position of the actuator (actual value) are then
displayed alternately for one minute.
After one minute, the display shows the difference in the actuator
position before and after the test. This means: the actuator position
has changed by the displayed value in one minute.
● C-ERR
● FdInI
● notSt
● ###.#
● SdtSt
● FdtSt
This diagnostics parameter indicates the stroke time measured dur‐
ing the last partial stroke test.
A partial stroke test can be initiated manually or a current partial
stroke test can be interrupted by pressing the
Alarm, error, and system messages
10.2 Diagnostics
button for at least 5 seconds.
button.
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