FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
88
6 Examination of System Configuration
6.5 Expansion of Main Unit (Calculation of Current Consumption)
3 Enter the specifications for the products to be added.
Enter the data on the input/output extension blocks and special function units/blocks to be connected to the
main unit in the following table, and calculate the current.
→ For the data on the number of input/output occupied points and current consumption of each type,
refer to Section 6.8.
* When connecting the FX
3U-1PSU-5V extension power supply unit to a system where the nearest
upstream unit to the FX
3U-1PSU-5V is a main unit, also enter the current consumption and number of
occupied I/O points for the input extension blocks (including FX
2N-8ER-ES/UL and FX2N-8ER) that are
connected to the FX
3U-1PSU- 5V.
Classification
Number of
connected
units
Type
Number of input/
output (occupied)
points [points]
Calculation of current
consumption of built-in power
supply
5V DC power
supply [mA]
24V DC power
supply [mA]
Enter the
products
connected
to the
main unit
Expansion board
1FX
3U- − −
Special adapter
10
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
FX
3U- −
Input/output
extension block*
−
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
Special function
unit/block
8
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
FX
0N/FX2N/FX3U-
Display module
1FX
3U-7DM − −
Calculate the totals
2
B
C
D2
E
G
2-
1
2-
2
2-
3
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