24
EB 8389-1S EN
Data logger
'Trigger condition' = Band entry
Upper band limit =
Trigger value + ½ Trigger band
Lower 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') or falls
below the limit ('Trigger value' + ½ 'Trigger
band').
This function is only active when 'Trigger
band' ≠ 0.
1.
Diagnostics > Data logger
−
Function:
Triggered
2.
−
Triggered by: Valve position, set point devi-
ation, signal pressure or set point
−
Trigger value:
0.0 to 100.0 %, [99.0 %] (set point, valve
position, set point deviation)
0.0 to 7000.0 mbar, [99.0 mbar] (signal
pressure)
−
Trigger band:
0.0 to 100.0 %, [99.0 %] (set point, valve
position, set point deviation)
0.0 to 10000.0 1/s, [99.0 1/s] (drive sig-
nal)
−
Trigger lead time:
0.0 s to 100 x 'Sampling time', [20.0 s]
−
Trigger condition: [Decreasing signal/lower
band value undercut], Increasing signal/up-
per band value exceeded, Band exit, Band
entry
3.
−
Sampling time: 0.2 to 3600.0 s, [1.0 s]
4.
−
Start data logger
3.2.3
Triggered by binary in
-
put
This setting is only active when a binary in-
put is installed in the positioner. If this is not
the case, the Progress bar indicates 'Cannot
start data logger – trigger cannot be set'.
The measured values are included in the trig-
gered data logging when the state of the bi-
nary input changes.
1.
Diagnostics > Data logger
−
Function:
Triggered
2.
−
Triggered by:
Binary input
−
Trigger lead time:
0.0 s to 100 x 'Sampling time', [20.0 s]
3.
−
Sampling time: 0.2 to 3600.0 s, [1.0 s]
4.
−
Start data logger
