Siemens SIPART Series Operating Instructions Manual page 217

27 SSDN - slow step zone down
The slow step zone is the zone of the closed-loop controller in which control signals are
issued in a pulsed manner. The impulse length is thus proportional to the control deviation. If
the control deviation is beyond the slow step zone, the valves are controlled using
permanent contact.
This parameter can be set for special applications.
28 TEMP - current temperature
Current temperature in the positioner enclosure. The sensor is provided on the electronic
printed circuit board.
In order to switch over the temperature display between °C and °F, press the
29 TMIN - Minimum temperature (slave pointer) and
30 TMAX - Maximum temperature (slave pointer)
The minimum and maximum temperatures inside the enclosure are continuously determined
and saved using a min/max pointer. They can be reset only in the factory.
31 T1 ... 39 T9 - number of operating hours in temperature ranges T1 to T9
Statistics about the duration of operation in different temperature ranges is maintained in the
device. An average of the measured temperature is taken every hour and the counter
assigned to the corresponding temperature range is incremented. This helps in drawing
conclusions about the past operating conditions of the device and the entire control valve.
The temperature ranges are classified as follows:
Temperature range [°C]
Operating hours in temperature ranges T1 to T2
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
T1 T2 T3
- ≥ -30 ≥ -15
≥ -30 < -15 < 0
Alarm, error, and system messages
T4 T5 T6
≥ 0 ≥ 15 ≥ 30
< 15 < 30 < 45
10.2 Diagnosis
button.
T7 T8 T9
≥ 45 ≥ 60 ≥ 75
< 60 < 75 -
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