Samson 3730 Series Operating Instructions

EB 8389-1S EN 23
Data logger
− Trigger lead time:
0.0 s to 100 x 'Sampling time', [20.0 s]
− Triggered by condensed state: No message,
Function check [Maintenance required],
Maintenance demanded, Out of specica-
tion, Failure
4. − Start data logger
3.2.2 Triggered by set point,
valve position, set point
deviation or signal pres-
sure
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 sig-
nal pressure p
out
) dened in 'Trigger value',
'Trigger band' and 'Trigger condition' are
met.
'Trigger condition' = Decreasing signal/
lower band value undercut
Lower band limit =
Trigger value – ½ T
rigger band
Trigger value
Tri
gg
er band
w, x, y, e
The conditions for starting a trigger event
are met when the value falls below the limit
('Trigger value' – ½ 'Trigger band').
'Trigger condition' = Increasing signal/
upper band value exceeded
Upper band limit =
Trigger value
+ ½ Trig
ger band
Trigger value
Tri
gg
er band
w, x, y, e
The conditions for starting a trigger event
are met when the value falls below the limit
('Trigger value' – ½ 'Trigger band').
'Trigger condition' = Band exit
Upper band limit =
Trigger value + ½ T
rigger band
Lower band limit =
Trigger value - ½ T
rigger band
Trigger value
Trigger band
w, x, y, e
The conditions for starting a trigger event
are met when the value falls below the limit
('Trigger value' – ½ 'Trigger band') or ex-
ceeds the limit ('Trigger value' + ½ 'Trigger
band').
This function is only active when 'Trigger
band' ≠ 0.

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English