VEGA VEGABAR 65 Profibus PA - Manual (Page 54)

Dynamic behaviour output
Run-up time approx. 10 s
90 %
100 %
10 %
t
t
T A
t
t
S
2 1
Fig. 28: Sudden change of the process variable, dead time t
T
, rise time t
A
and step response time t
S
1 Process variable
2 Output signal
Dead time ≤ 150 ms
Rise time ≤ 100 ms (10 … 90 %)
Step response time ≤ 250 ms (ti: 0 s, 10 … 90 %)
Damping (63 % of the input variable) 0 … 999 s, adjustable
Input variable
Adjustment
Adjustment range of the min./max. adjustment relating to the nominal measuring range:
-
percentage value -10 … 110 %
-
pressure value -20 … 120 %
Adjustment range of the zero/span adjustment relating to the nominal measuring range:
-
zero -20 … +95 %
-
Span -120 … +120 % 10)
-
Difference between zero and span max. 120 % of the nominal range
Recommended max. turn down 10 : 1 (no limitation)
Nominal measuring ranges and overload capability in bar/kPa
Nominal range Overload, max. pressure Overload, min. pressure
Gauge pressure
0 … 0.1 bar/0 … 10 kPa 15 bar/1500 kPa -1 bar/-100 kPa
10) Values less than -1 bar cannot be set.
54 VEGABAR 65 • Profibus PA
10 Supplement
28253
-EN
-090522