Siemens SIPART PS2 6DR52xx - Manual (Page 130)

Operation
130
SIPART PS2 Manual
A5E00074631--06
Save maintenance data
Pressing the increment button for at least 5 seconds triggers a
memory function. In doing so, the diagnostic data 7 to 18 is saved in a
non--volatile memory as the “data of the last maintenance”. This
diagnostic data consists of selected values that, when changed,
can provide information on the mechanical wear of the valve.
Normally, this function is operated via PDM, menu item: Device!Save
maintenance info. The comparison of the data of the last maintenance
to the current data is possible via PDM.
Prediction up
Prediction down
see chapter 4.7, page 143.
Number of operating hours in actuating range WT00 to WT95
If the positioner is in automatic mode, statistical information is
generated as to how long a valve or a flap was operated in which
section of the actuating range. For this purpose, the entire actuating
range (0 to 100 %) is divided into 8 sections (actuating ranges). The
positioner registers the current position continuously and increments
the operating hours counter that is assigned to the relevant section
(actuating range) every hour. This allows conclusions to be made about
past operating conditions and is in particular for the assessment of the
control characteristics of the control loop or of 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 %
≥5 %
< 10 %
≥10 %
< 30 %
≥30 %
< 50 %
≥50 %
< 70 %
≥70 %
< 90 %
≥90 %
< 95 %
≥95 %
The 8 operating hours counters can be set to zero together by pressing
the increment button (for at least 5 seconds).
TIP: Since the actuating ranges are arranged at the end of the
diagnosis menu with numbers 45 to 52, press the decrement button
several times in addition to the operating mode button. That is how you
access diagnosis numbers 45 to 52 quickly.
Setpoint current
You can have the current setpoint displayed here in mA.
.
NOTE
All diagnosis values are updated every 15 minutes in the non-volatile
memory so that only the values of the past quarter of an hour are lost
if there is a power failure.
42 STORE
43 PRUP
44 PRDN
45 WT00 to
52 WT95
53 MA