Diagnostic Value '42.Vent1' / '43.Vent2; Diagnostic Value '44.Ven1R' / '45.Ven2R - Siemens SIPART PS2 Operating Instructions Manual

Alarm, error, and system messages
10.2 Diagnostics
10.2.4.27

Diagnostic value '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:
10.2.4.28

Diagnostic value '44.VEN1R' / '45.VEN2R'

'44.VEN1R' Number of switching cycles of pilot valve 1, resettable
'45.VEN2R' Number of switching cycles of pilot valve 2, resettable
Display range:
Purpose:
Description:
222
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.
0 ... 4.29E9
Control procedures of the pilot valves in the pneumatic block of the
positioner are counted since the last time this parameter was reset,
and displayed here.
Corresponds to the description for Diagnostic value '42.VENT1' /
'43.VENT2' (Page 222) referred to the diagnostics parameters
'VEN1R' and 'VEN2R' described here.
SIPART PS2 with and without HART
Operating Instructions, 02/2016, A5E00074631-AB