Siemens SIPART Series - Page 219

Alarm, error, and system messages
10.2 Diagnosis
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
217
45 WT00 bis 52 WT95 - number of operating hours in the actuating ranges WT00 to WT95
When the positioner is in the automatic mode, statistics regarding the duration for which a
valve or a flap operated in a particular section of the actuating range are continuously
maintained. The entire actuating range is divided into 8 sections from 0 to 100 %. The
positioner records the current position continuously and increments the runtime meter
assigned to the corresponding actuating 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.
The actuating range is divided as follows:
Actuating range
WT00
WT05
WT10
WT30
WT50
WT70
WT90
WT95
Actuating range section [%]
-
≥ 5
≥ 10
≥ 30
≥ 50
≥ 70
≥ 90
≥ 95
< 5
< 10
< 30
< 50
< 70
< 90
< 95
-
Division of actuating range
You can simultaneously set the eight operating hours counters to zero. To do this, press the
button for at least 5 seconds.
TIP:
Since the actuating ranges are provided at the end of the diagnostics menu, press the
decrement button several times along with the button. This will help you in accessing
the diagnostics numbers faster.
Note
Updating of the diagnostics values
All diagnostics valu
es are updated in the non-volatile memory every 15 minutes so that, in
case of a power failure, only the values of the previous 15 minutes may be lost.
See also
Description of parameters 13 through 33 (Page 164)