Operation and maintenance instructions
CPU PROFINET Series CX06 module
5000004825
Versione 01
39
o
Il = Logic cu SPI input current
o
Ip = Power current (loads)
o
Rc1 + Rc2 = Cable resistance
o
Rc0 = Common cable resistance
o
L = Cable length
In order to calculate the cable length use this formula:
Where:
o
Vp min: minimum tension necessary for output
o
V min: minimum tension expected from power supply
o
Il: corrent necessary for logic and sensor
o
Ip: corrent necessary for output
o
S: cable section
o
K: cable conductance (copper conductance Kcu = 56 m/(mm² * Ω))
Example:
V min = 24 V
Vp min = 21.6 V
Il = 1 A
Ip = 1 A (40 Series H coils)
S = 0,75 mm²
Kcu = 56 m/(mm² * Ω)
