Table of Contents
Advertisement
3.2.2.2 Triggered by set point,
valve position, drive signal
or set point deviation
The measured values are included in the trig-
gered data logging when the conditions for
the selected measured variable (set point w,
valve position x, set point deviation e or
drive signal y) defined in 'Trigger value',
'Trigger band' and 'Trigger edge' are met.
'Trigger edge' = Low signal/falling edge/
bottom band exit
w, x, y, e
Trigger value
Bottom band limit =
Trigger value – ½ trigger band
Trigger band
The conditions for starting a trigger event
are met when the value falls below the limit
('Trigger value' – ½ 'Trigger band').
'Trigger edge' = High signal/rising edge/
top band exit
w, x, y, e
Top band limit =
Trigger value + ½ trigger band
Trigger value
Trigger band
EB 8389S EN
The conditions for starting a trigger event
are met when the value exceeds the limit
('Trigger value' + ½ 'Trigger band').
'Trigger edge' = Band exit
w, x, y, e
Top band limit
Trigger value + ½ trigger band
Trigger value
Bottom band limit=
Trigger value – ½ trigger band
Trigger band
The conditions for starting a trigger event
are met when the value falls below the lower
limit ('Trigger value' – ½ 'Trigger band') or
exceeds the upper limit ('Trigger value' + ½
'Trigger band').
This function is only active when 'Trigger
band' ≠ 0.
'Trigger edge' = Band entry
w, x, y, e
Top band limit =
Trigger value + ½ trigger band
Trigger value
Bottom band limit =
Trigger value – ½ trigger band
Trigger band
The conditions for starting a trigger event
are met when the value exceeds the lower
Statistical information
27
Advertisement
Table of Contents
