Cashco Siemens PS2 I/P - Manual (Page 93)

Operation
93
SIPART PS2 Manual
A5E00074631-01
Current temperature
Current temperature in the positioner housing The sensor is on the
electronics board.
Minimum temperature (drag pointer)
and
Maximum temperature (drag pointer)
The minimum and maximum temperature inside the housing is determi-
ned and stored continuously in a kind of drag pointer.
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:
T1 T2 T3 T4 T5 T6 T7 T8 T9
Temperature
range [_C] ≥--30
≥--30
<--15
≥--15
< 0
≥0
< 15
≥15
< 30
≥30
< 45
≥45
< 60
≥60
< 75
≥75
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 for at
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 HART, e.g. with PDM, menu item
Instrument!Store maintenance info. It is possible to compare the data
of the last maintenance with the current data.
4.5.3 Online-Diagnosis
Some important variables and parameters are monitored continuously
during operation. In the “Configuration” operating mode you can confi-
gure this monitoring so that the fault message output is activated when
a certain event such as exceeding a limit value occurs.
19 TEMP
20 TMIN
21 TMAX
22 T1 to
30 T9
31 VENT1
32 VENT2
33 STORE