Calculating With Graphs - Festo FB16 Electronic Manual

VIFB16 - 03/05
A-8
Appendix A

Calculating with graphs

Proceed as follows:
1. Calculate the maximum current consumption
of the outputs/valves (I
2. Calculate the lowest voltage to be expected
on the power unit during operation (V
Take into consideration:
• the inluence of load variation of the power
unit
• the fluctuations in the primary mains voltage.
3. Read the permitted length of cable in the
table for the relevant cross section.
Example for 1.5 mm
V = 22.8 V, I
Omin
).
2
2
:
= 2 A; L = 25 m
2 max
).
Omin
0506b