Limitation On Current Consumption; Power Supply Check From The Cpu Module (Current Consumption Calculation) - Mitsubishi Electric FX5U User Manual

4.4

Limitation on Current Consumption

Power required for expansion adapters, expansion boards, and extension modules is supplied from the CPU module or
extension power supply module. The number of extension devices that can be connected must be determined from the
capacity of the power supply.
Power supply check from the CPU module (current consumption
calculation)
Check if power can be supplied to extension devices with the power supply capacity of the CPU module.
Ex.
CPU module
Expansion
Expansion
adapters
board
Calculate following the procedure below.
1.
Check the power supply capacity of the CPU module used. (Page 32 CPU Module)
Ex.
Type
CPU module
*1 Value when service power supply is used for input circuits. The power supply capacity differs when external power supply is used for
input circuit.
2.
Check the current consumption of extension devices.
( Page 33 I/O Module), (

Ex.
Type
Expansion board
Expansion adapter
Output module
Input module
Simple motion module
Bus conversion module
Analog input
*1 If using external power supply for input circuit, calculate current consumption of 24 V DC power supply as 0 mA.
3.
Calculate the total current consumption of each power supply.
Ex.
Power supply type
5 V DC power supply
24 V DC power supply
4 SYSTEM CONFIGURATION
48
4.4 Limitation on Current Consumption
FX5
Output
Input
Intelligent
module
module
module
Power supply from CPU module
Model
FX5U-32MT/ES
Page 34 Intelligent Function Module)

Model
FX5-232-BD
FX5-232ADP
FX5-16EYT/ES
FX5-16EX/ES
FX5-40SSC-S
FX5-CNV-BUS
FX3U-4AD
Total current consumption
510 mA
240 mA
Bus FX3
Intelligent
conversion
module module
Power supply capacity
5 V DC power supply
900 mA
Current consumption
5 V DC power supply
20 mA
30 mA
100 mA
100 mA

150 mA
110 mA
24 V DC service power supply
*1
400 mA
24 V DC power supply

30 mA
125 mA
*1
85 mA


