Siemens PROFIBUS PA SIPART PS2 Manual page 109

22 T1 to
30 T9
T1
Temperature
range [_C]
≥--30
31 VENT1
32 VENT2
33 STORE
34 PRUP
35 PRDN
.
SIPART PS2 PA Manual
A5E00127926-03
Number of operating hours in temperature range T1 to T9
Statistics how long operation takes place in which temperature ranges
is kept in the instrument. To do this, the measured temperature over
one hour respectively is averaged and incremented in the counter
which is assigned to the corresponding temperature range every hour.
This enables you to draw conclusions about the past operating condi-
tions and thus the whole fitting.
The temperature ranges are divided up as follows:
T2 T3 T4
≥--30 ≥--15 ≥0
<--15 < 0 < 15
Number of cycles pre-control valve 1
and
Number of cycles pre-control valve 2
These two counters add up the control processes of the pre-control
valves.
Store maintenance data
A store function is triggered by pressing the increment key
least 5 seconds. Here the diagnostic data 7 to 17 are stored in a non-
volatile memory as "Data of the last maintenance". These diagnostic
data are selected values, the changes of which can provide information
on the mechanical wear of the valve.
Normally this function is operated via PDF (chapter 5.2.1, page 119),
menu item Instrument!Store maintenance info. It is possible to
compare the data of the last maintenance with the current data via
PDM.
Prediction up
Prediction down
see chapter 4.7, page 115.
NOTE
All diagnostic values are updated every quarter of an hour to a non--
volatile memory, so that in the event of a loss of electrical power only
the events of the last hour will be lost.
T5 T6 T7
≥15 ≥30 ≥45
< 30 < 45 < 60
Operation
T8 T9
≥60 ≥75
< 75
for at
107