FX3U Series Programmable Controllers
User’s Manual - Hardwaer Edition
97
6 Examination of System Configuration
6.6 Expansion of FX2N Series I/O Powered Extension Unit (Calculation of Current Consumption)
1
Introduction
2
Features and
Part Names
3
Product
Introduction
4
Specifications
5
Version and
Peripheral
Devices
6
System
Configuration
7
Input/Output
Nos., Unit Nos.
8
Installation
9
Preparation and
Power Supply
Wiring
10
Input Wiring
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 units/blocks to be con-
nected 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 FX3U-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 FX2N-8ER) that are connected
to the FX3U-1PSU-5V.
*2. A maximum of 8 special function units/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- −
FX
2N- −
FX
2N- −
FX
2N- −
FX
2N- −
Special function
unit/block
8
*2
FX0N/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-
Calculate the totals
3
3-
1
3-
2
3-
3
D1
4
D2
E
4-
1
4-
2
4-
3