Samson 373 Series Operating Instructions

EB 8389 EN 29
Statistical information
4.1.2 Analysis and monitoring
Valve end position
(falling)
Valve end position
(rising)
Breakaway time
(rising)
Transit time
(risin
g
)
Breakaway time
(falling)
Transit time
(falling)
x [%]
w [%]
t [s]
Fig.1: Analysis of diagnostics for on/off valve
The analysis pinpoints a fault when at least
one of the following conditions is met while
the valve is moving:
− The current 'Breakaway time (rising)' dif-
fers from the reference value by the
amount entered in 'Limit value time anal-
ysis'.
− The current 'Breakaway time (falling)'
differs from the reference value by the
amount entered in 'Limit value travel
analysis'.
− The current 'Transit time (rising)' differs
from the reference value by the amount
entered in 'Limit value time analysis'.
− The current 'Transit time (falling)' differs
from the reference value by the amount
entered in 'Limit value time analysis'.
− The current 'Valve end position (rising)'
differs from the reference value by the
amount entered in 'Limit value travel
analysis'.
− The current 'Valve end position (falling)'
differs from the reference value by the
amount entered in 'Limit value travel
analysis'.
If one of these conditions is met, the position-
er generates an 'Open/Close' message ac-
cording the selected status classication.
Diagnosis > Status messages > Extended
− Open/Close
4.1.3 Resetting single status
messages
The message and analysis are reset by
right-clicking "Reset measured data 'Open/
Close'" and selecting 'Execute'.
The parameters for the on/off valve and the
limit values are reset by right-clicking "Reset
all parameters 'Open/Close'" and selecting
'Execute'.
The positioner saves the reference analysis
and two further test analyses. The analysis of
the oldest test is deleted when another test is
performed.
Operation > Reset
− Reset measured data 'Open/Close'
− Reset all parameters 'Open/Close'

Samson 373 Series Specifications

General

Brand	Samson
Model	373 Series
Category	Valve Positioners
Language	English