Segment
Wire cross-section
[mm²]
Cable length
[m]
Voltage VDC
[V]
Current consumption of
connected devices [A]
1
0.34
15.00
23.10
0.00
2
0.34
15.00
22.29
0.00
…
9
0.34
15.00
18.98
0.00
10
0.34
15.00
18.85
0.00
Table 4: Example voltage drop on 10 Flexi Loop nodes
However, if 15 Flexi Loop nodes are used in the same conditions, the input voltage
drops below the permissible value from the 7
th
Flexi Loop node.
Segment
Wire cross-section
[mm²]
Cable length
[m]
Voltage VDC
[V]
Current consumption of
connected devices [A]
1
0.34
15.00
22.68
0.00
2
0.34
15.00
21.44
0.00
…
6
0.34
15.00
17.33
0.00
7
0.34
15.00
16.52
0.00
…
15
0.34
15.00
13.08
0.00
Table 5: Example voltage drop on 15 Flexi Loop nodes
Solution example with PWRI power supply accessory
By using a PWRI power supply accessory after the 11
th
Flexi Loop node, the input volt‐
age is adequate at all Flexi Loop nodes.
Segment
Wire cross-sec‐
tion [mm²]
Cable length
[m]
Voltage VDC
[V]
Current consumption of con‐
nected devices [A]
1
0.34
15.00
23.02
0.00
2
0.34
15.00
22.12
0.00
…
11
0.34
15.00
17.86
0.00
FLA-PWRI
1
0.34
15.00
23.02
0.00
…
4
0.34
15.00
20.58
0.00
Table 6: Example voltage drop on 15 Flexi Loop nodes with PWRI
Solution example with increased wire cross-section
Using a wire cross-section of 0.75 mm² will ensure that a sufficient input voltage is
available even at the 15th Flexi Loop node.
4
DESIGN
32
O P E R A T I N G I N S T R U C T I O N S | Flexi Loop
8015836/YT10/2016-05-24 | SICK
Subject to change without notice
