VEGA VEGABAR 67 Foundation Fieldbus - climate compensated - Manual (Page 50)

50
10 Supplement
VEGABAR 67 • Foundation Fieldbus - climate compensated
39446-EN-130321
Weight approx.
Ʋ Basic weight 0.7 kg (1.543 lbs)
Ʋ Suspension cable 0.1 kg/m (0.07 lbs/ft)
Ʋ Connection tube 1.5 kg/m (1 lbs/ft)
Ʋ Straining clamp 0.2 kg (0.441 lbs)
Ʋ Threaded fitting 0.4 kg (0.882 lbs)
Lengths
Ʋ Connection tube 0.25 … 6 m (0.82 … 19.69 ft)
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. 31: 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