VEGA VEGABAR 55 Foundation Fieldbus - Manual (Page 46)

46
10 Supplement
VEGABAR 55 • Foundation Fieldbus
36736-EN-130321
Ʋ Connection cable with IP 68 1 bar
version
PE, PUR
Weight approx. 0.8 … 8 kg (1.764 … 17.64 lbs), depending on process
fitting
Output variable
Output
Ʋ Signal digital output signal, Foundation Fieldbus protocol
Ʋ Physical layer according to IEC 61158-2
Channel Numbers
Ʋ Channel 1 Primary value
Ʋ Channel 2 Secondary value 1
Ʋ Channel 3 Secondary value 2
Ʋ 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. 26: Sudden change of the process variable. t
T
: dead time; t
A
: rise time; t
S
: jump response time
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:
Ʋ Percentage value -10 … 110 %
Ʋ Pressure value -20 … 120 %