6 Examination of System Configuration
6.6 Expansion of FX2N Series I/O Powered Extension Unit
85
FX
3G
Series Programmable Controllers
User's Manual - Hardware Edition
1
Introduc
tion
2
Features an
d
Part Nam
es
3
Produc
t
Introducti
on
4
Specifi
cations
5
Ve
rsi
on and
Peri
pheral
De
vice
s
6
Sy
stem
Confi
gurati
on
7
Input/Output
N
os.,
Unit N
os.
8
Ins
tallati
on
9
Preparati
on
and
Power Suppl
y
Wi
rin
g
10
Input W
iring
6.6.2
When special extension devices are also added (calculation of current
consumption)
1
Select an input/output powered extension unit.
→
For the data on the number of input/output occupied points and current consumption of each type,
refer to Section 6.8.
2
Enter the specifications for the products to be added.
Enter the data for the input/output extension blocks and special function blocks to be connected to
the input/output powered extension unit, and calculate the current.
→
For data on the number of input/output occupied points and current consumption of each type,
refer to Section 6.8.
*1.
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 input/output powered extension 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 FX
2N
-8ER) that are connected to the FX
3U
-1PSU-5V.
*2.
A maximum of 8 special function blocks are connectable, including the main unit and extension power
supply unit.
Power supply
classification
Classification
Number of
connected units
Type
Number of input/
output points
[points]
Capacity of built-in power supply
5V DC power
supply [mA]
24V DC service
power supply
[mA]
With built-in
power
supply
Input/output
powered
extension unit
-
FX
2N
-
Example of entry FX
2N
-48ER-ES/UL
48
690
460
Power supply
classification
Classification
Number of
connected
units
Type
Number of input/
output 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 input/
output powered
extension unit
Input/output
extension
block
*1
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
FX
2N
-
-
Special
function
unit/block
8
*2
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
FX
2N
/FX
3U
-
Calculate the totals
1
1
-1
1
-2
1
-3
B1
2
B2
C
2
-1
2
-2
2
-3
