User manual

4 Conguration | Example calculation for the power supply
26 1432790000/08/12.2015Manual u-remote
Example calculation for the current demand (all current values in A)
Module
no.
Product I
SYS
I
IN
I
OUT
I
S
I
L
Simultaneity
factor
g
Cumulative cur-
rent demands
of the input cur-
rent path
Cumulative
current demand
of the output
power path
coupler
Cumulative cur-
rent demand of
the PF-O output
power path
UR20-FBC-PN-IRT 0.116 0.116 0
1 UR20-4DI-P 0.008 0.012 0.06 1 0.196 0
2 UR20-4DI-P 0.008 0.012 0.06 1 0.276 0
3 UR20-4DI-P 0.008 0.012 0.12 1 0.416 0
4 UR20-4DI-P 0.008 0.012 0.18 1 0.616 0
5 UR20-8DO-P 0.008 0.015 2 0.5 0.624 1.015
6 UR20-8DO-P 0.008 0.015 4 0.5 0.632 3.03
7 UR20-8DO-P 0.008 0.015 3 0.5 0.64 4.545
8 UR20-8DO-P 0.008 0.015 2 0.5 0.648 5.56
9 UR20-8DO-P 0.008 0.015 1.2 0.5 0.656 6.175
10 UR20-8DO-P 0.008 0.015 4 0.5 0.664 8.19
UR20-PF-O
11 UR20-8DO-P 0.008 0.015 4 0.5 0.672 2.015
12 UR20-8DO-P 0.008 0.015 4 0.5 0.68 4.030
I
SYS
Current consumption from the system power supply
I
IN
Power consumption from input current path
I
OUT
Power consumption from output current path
I
S
Current demand of the connected sensors
I
L
Current demand of the connected actuators
The current demand is just under 10A! The output
current path must therefore be refreshed before the
11th module.
10A is supplied by the UR20-PF-O module. The
1.81A calculated as remaining after the 10th module
must not be added to the 10 A after the UR20-PF-O
module!