12.2.4.29 Diagnostic value '46.STORE - Save maintenance data'
Purpose: The minimum and maximum temperatures within the enclosure are
constantly determined and saved as with a min/max pointer. This
value can only be reset in the factory. In order to switch over the
temperature display between °C and °F, press the button for at
least 5 seconds in order to initiate a save function. The values of the
diagnostics parameters Diagnostic value '8.WAY - Determined
travel' (Page 260) to Diagnostic value '11.LEAK - Leakage test'
(Page 261) and Diagnostic value '21.P0 - Potentiometer value of
lower endstop (0%)' / '22.P100 - Potentiometer value of upper end‐
stop (100%)' (Page 265) to Diagnostic value '28.SSUP - Slow step
zone up' / '29.SSDN - Slow step zone down' (Page 267) are saved
in the non-volatile memory as 'data of last maintenance'. This diag‐
nostics data contains selected values whose changes can give in‐
formation about mechanical wear and tear of the valve.
This function is normally operated through the PDM, menu com‐
mand 'Diagnostics-> Save maintenance information'. The data of
the last maintenance operation can be compared with the current
data using SIMATIC PDM.
12.2.4.30 Diagnostic value '47.PRUP - Prediction up' / '48.PRDN - Prediction down'
Display range: 1 ... 40
Purpose: This value specifies the prediction of the controller for the up
(PRUP) and down (PRDN) movements.
For more information, refer also to the section Optimization of con‐
troller data (Page 104).
Factory setting: 1
12.2.4.31 Diagnostic value '49.WT00' ... '56.WT95' - Number of operating hours in the travel range
WT00 to WT95
Display range: 0 ... 4.29E9
Purpose: When the positioner is in "Automatic" mode, statistics are continu‐
ously maintained regarding the duration for which a valve or a flap
is operated in a particular section of the travel range. The entire
travel range is divided into 8 sections from 0 to 100 %. The posi‐
tioner records the current position continuously and increments the
runtime meter assigned to the corresponding travel range every
hour. This helps in drawing conclusions about the past operating
conditions and especially in assessing the control properties of the
control loop and the entire control valve.
Diagnostics and troubleshooting
12.2 Diagnostics
SIPART PS2 with PROFIBUS PA
270 Operating Instructions, 05/2019, A5E00127926-AC
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