User manual
Conguration | Example calculation for the power supply
25Manual u-remote1432790000/03/02.2014
Examplecalculationforthecurrentdemand(allcurrentvaluesinA)
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
thePF-Ooutput
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 10A! The output
current path must therefore be refreshed before the
11th module.
10A is supplied by the UR20-PF-O module. The
1.81A calculated as remaining after the 10th module
must not be added to the 10 A after the UR20-PF-O
module!