FX
3U
Series Programmable Controllers
User’s Manual - Hardware Edition
133
6 Examination of System Configuration
6.9 Example of System Configuration and System Modification
1
Introducti
on
2
Features
and
Par
t Names
3
Product
Introduc
tion
4
Sp
eci
fic
ati
ons
5
V
ers
ion and
Peri
ph
er
al
D
evices
6
S
yst
em
C
onfi
guration
7
Input/Ou
tput
No
s., Un
it No
s.
8
Inst
allati
on
9
Prep
arati
on an
d
Pow
er Supp
ly
Wi
rin
g
10
Input W
iring
3. Calculate the total number of input/output occupied points (number of input/output points).
6
Determine whether the devices can be added to the main unit.
Calculate the current by the following formula to confirm whether the extension devices selected in
Step 2 can be connected.
1. Calculate the current consumption of the built-in 5V DC power supply.
2. Calculate the current consumption of the built-in 24V DC power supply (24V DC service
power supply).
The value obtained by this calculation (when the value is positive) indicates the remaining capacity of the 24V
DC service power supply, that can be used for external loads.
≤
176 points
384 points
Number of input/output
occupied points
+
Input/output on network
32 points
B
A
Total obtained in Step 1
Total obtained in Step 2
Total number of input/output points
OK
=
208 points
Calculation
result
Max. number of
input/output points
370mA
-
500mA
130mA
=
OK
≥
0mA
Current consumption
Capacity of 5V DC
power supply
Calculation result
Main unit
Total of current consumed by
extension devices
1-
2
2-
2
400mA
-
600mA
200mA
=
OK
≥
0mA
Current consumption
Capacity of 24V DC
power supply
Calculation result
Main unit
Total of current consumed by
extension devices
1-
3
2-
3
Summary of Contents for FX2-16E series
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Page 8: ... 6 Safety Precautions Read these precautions before use MEMO ...
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