Functional safety for SIPART PS2 FF
A5E00489774-02, 10/2013
29
43 PRUP - prediction UP
Communication object: [INIT_VALUES_INIT_PREDICTION_UP]
and
44 PRDN - prediction DOWN
Communication object: [INIT_PREDICTION_DOWN]
See also Auto-Hotspot
45 WT00 to 52 WT95 - number of operating hours in actuating range WT00 to WT95
Communication object: -
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 (0 to 100 %) is divided into
8 sections (actuating ranges). The positioner records the current position continuously and increments the runtime meter
assigned to the corresponding section (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 ranges
The 8 operating hours counters can be set to zero all at once by pressing the increment key (for at least 5 seconds).
TIP: Since the actuating ranges are provided at the end of the diagnostics menu, press the decrement button repeatedly
along with the operating mode button. This will help you in accessing the diagnostics numbers faster.
Note
All diagnostics values are updated every 15 minutes to a non-volatile memory, so that in the case of a power failure only the
values from the last 1/4 hour will be lost.
