Expansion Of Fx2N Series I/O Powered Extension Unit; Quick Reference Matrix (When Only Input/Output Devices Are Added) - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
6.6 Expansion of FX
When extension is not possible due to the main unit connection restrictions described in the preceding section
and extension of input/output is required, select the input/output powered extension unit.
Since input/output powered extension units have built-in input/output terminals, reexamine the input/output
devices connected to the main unit to ensure the required number of points.
Before
Main unit
selection
After
Main unit
selection
Determine whether extension devices can be connected to the input/output powered extension unit by the
following method.
• When only input/output extension devices are added, use the quick reference matrix.
• When also special extension devices are added, calculate the current consumption to ensure that the total
current to be consumed by the added extension devices can be supplied by the built-in power supply.
→ Refer to 6.6.2 When special extension devices are also added (calculation of current consumption).
6.6.1

Quick reference matrix (when only input/output devices are added)

In the following quick reference matrix, the value at the intersection of the number of input points to be added
(horizontal axis) with the number of output points to be added (vertical axis) indicates the remaining power
supply capacity.
1
Select the input/output extension block (number of points) to be connected
to the main unit.
Check that the number of input/output points can be added.
When connecting the FX
upstream unit to the FX
consumption by the input extension blocks (including FX
to the FX -1PSU-5V when calculating the total current consumption of the input/output powered
3U
extension unit.
1. AC power supply/DC input type
1) FX -32ER, FX
2N
FX -32ER-ES/UL, FX
2N
AC power supply
DC input type
FX -32E
2N
(Example) When a 16-input and 0-output point extension block is connected to FX
82
Series I/O Powered Extension Unit
2N
Range to be covered
by main unit
Input/output
extension
function block
block
Input/output
extension
function block
block
→ Refer to 6.6.1 Quick reference matrix (when only input/output devices are added).
-1PSU-5V extension power supply unit to a system where the nearest
3U
-1PSU-5V is an input/output powered extension unit, include the current
3U
-32ET, FX -32ES
2N 2N
-32ET-ESS/UL
2N
Output
24 25
16 100
8 175 125
0
250 200
0
current of the 24V DC service power supply becomes 150mA or less.

6.6 Expansion of FX2N Series I/O Powered Extension Unit

Range exceeding power supply capacity
Input extension
Special
Output extension
block
block (16 points)
(16 points)
Input/output powered
Special
extension unit
(32 points)
Replaced with input/output
-8ER-ES/UL and FX
2N
(Example)
50 0
75 25
150 100 50
8 16 24 32
Input
Number of added points
6 Examination of System Configuration
Special
function block
Special
function block
powered extension unit
-8ER) connected
2N
-32ER-ES/UL, the
2N