VEGA VEGALOG 571 - Manual (Page 33)

VEGALOG 571 33
Electrical connection
Sensor data Average
power
Sensor type consumption P
M
VEGASON
51 V … 53 V
0,1 W
83 FV/GV 2,3 W
84 FV/GV 2,9 W
85 FV/GV 2,9 W
87 FV/GV 3,3 W
VEGAPULS
51 V … 53 V
0,1 W
54 V … 56 V 1,0 W
64 FV/GV/UV 2,0 W
VEGAFLEX
51 … 52
0,1 W
Pressure transmitter
D80, D84, D86, D87
0,3 W
The wire cross-section can be determined
according to two methods:
- by graphics
- by calculation
Graphic determination
1000
900
800
700
600
500
400
300
200
100
0
0 5 10 15 20 25
1000
900
800
700
600
500
400
300
200
100
0
0 5 10 15 20 25
For graphic determination the following pro-
cedure is recommended:
• consider each branch separately
• determine the power consumption of the
sensors
• estimate the required line length
• read the required wire cross-section out of
the graphic via the power and the line
length
Example:
- 5 sensors VEGASON 84
- Line length 200␣ m
- P
M
= 5 x 2,9 W = 14,5 W
- Supply voltage 24 V
Result:
Cross-section (Cu) 24 V selected acc. to
diagram:
A = 1,5 mm
2 . max. line length [m]
max. line length [m]
max. power [W]
max. power [W]
Supply voltage 24 V
Supply voltage 33 V
2,5 mm 2
2,5 mm 2
1,5 mm 2
1,0 mm 2
0,75 mm 2
1,5 mm 2
1,0 mm 2
0,75 mm 2