Table of Contents
Advertisement
Alarm, error, and system messages
10.2 Diagnostics
10.2.3.26
Diagnostics parameters '33.T1' ... '41.T9' Number of operating hours in the
temperature range 1 to 9
Display range:
Purpose:
Temperature range [°C]
Operating hours in temperature ranges T1 to T2
Factory setting:
10.2.3.27
Diagnostics parameters '42.VENT1' / '43.VENT2'
'42.VENT1' Number of switching cycles of pilot valve 1
'43.VENT2' Number of switching cycles of pilot valve 2
Display range:
Purpose:
Description:
220
0 ... 4.29E9
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:
T1
T2
T3
-
≥ -30
≥ -15
≤ -30
< -15
< 0
0
0 ... 4.29E9
Control procedures of the pilot valves in the pneumatic block of the
positioner are counted and displayed in this parameter.
The pneumatic block of the positioner pressurizes and depressurizes
the actuator. The pneumatic block contains two pilot valves. The
characteristic service life of the pneumatic block depends on the load.
This amounts on average to approx. 200 million switching cycles for
each of the two pilot valves with symmetrical load. The number of
control procedures for the switching cycles serves to assess the
switching frequency of the pneumatic block.
Counting procedure for single-acting actuators:
• Pressurize => 42.VENT1
• Depressurize => 43.VENT2
Counting procedure for double-acting actuators:
• Pressurize (Y2) / Depressurize (Y1) => 42.VENT1
• Depressurize (Y1) / Pressurize (Y2) => 43.VENT2
The value is written hourly into a nonvolatile memory.
T4
T5
T6
≥ 0
≥ 15
≥ 30
< 15
< 30
< 45
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12
T7
T8
T9
≥ 45
≥ 60
≥ 75
< 60
< 75
-
Advertisement
Table of Contents
