Samson TROVIS 3730-3, Operating Instructions Manual

Page: 33 / 132

EB 8389 EN 33
Statistical information
− Trigger via condensed state: No message,
[Maintenance required], Maintenance de-
manded, Out of specification 1) , Mainte-
nance alarm
3. − Scan rate: 0.2 to 3600.0 s, [1.0 s]
4. − Start data logger
1)
Type 3730-5: Cannot be selected
4.2.2.2 Triggered by set point,
valve position, drive signal
or set point deviation
3730-2 3730-3 3731-3 3730-4 3730-5 3731-5
• • • •
1)
1)
Function available in firmware 1.5x and lower
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"
Bottom band limit =
Trigger value – ½
trigger 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').
'Trigger edge' = "High signal/rising edge/
top band exit"
Top band limit =
Trigger value
+ ½ trigger band
Trigger value
Trigger band
w, x, y, e
The conditions for starting a trigger event
are met when the value exceeds the limit
('Trigger value' – ½ 'Trigger band').
'Trigger edge' = "Band exit"
Top band limit
Trigger value
+ ½
trigger band
Bottom band limit=
Trigger value
– ½
trigger band
Trigger value
Trigger band
w, x, y, e
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').