VEGA VEGABAR 64 Foundation Fieldbus - Manual (Page 54)

Output variable
Output
-
Signal digital output signal, Foundation Fieldbus protocol
-
Physical layer according to IEC 61158-2
Channel Numbers
-
Channel 1 Primary Value
-
Channel 2 Secondary Value 1
-
Channel 3 Secondary Value 2
-
Channel 4 Temperature Value
Transmission rate 31.25 Kbit/s
Current value 10 mA, ±0.5 mA
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
Additional output parameter - temperature
Processing is made via output signal HART multidrop, Profibus PA and Foundation Fieldbus
Range -50 … +150 °C (-58 … +302 °F)
Resolution 1 °C (1.8 °F)
54 VEGABAR 64 • Foundation Fieldbus
10 Supplement
28259
-EN
-081209