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4 SYSTEM CONFIGURATION
4.4 Limitation on Current Consumption
51
4
Power supply check from extension power supply module
(current consumption calculation)
If 5 V DC power supply of the CPU module is insufficient and cannot be extended, add an extension power supply module.
Check if power can be supplied to extension modules with the power supply capacity of the extension power supply module.
Calculate following the procedure below.
1. Check the power supply capacity of the extension power supply module used.
(Page 36 Extension Power Supply Module)
If the ambient temperature exceeds 40, use the extension power supply module at the following current
values within the derating range.
2. Check the number of input/output points and current consumption of the extension module.
(Page 33 I/O Module)
(Page 34 Intelligent Function Module)
*1 24 V DC power supply is supplied from the CPU module or powered input/output module.
Type Model Power supply capacity
5 V DC power supply 24 V DC power supply
FX5 extension power supply module FX5-1PSU-5V 1200 mA 300 mA
Type Model Current consumption
5 V DC power supply 24 V DC power supply
Input module FX5-16EX/ES 100 mA
*1
Output module FX5-16EYR/ES 100 mA 125 mA
Simple motion module FX5-40SSC-S
Bus conversion module FX5-CNV-BUS 150 mA
Analog input FX3U-4AD 110 mA
Ex.
CPU module
Expansion
adapters
Expansion
board
Output
module
Output
module
Input
module
FX5
Intelligent
module
FX3
Intelligent
module
FX5
extension
power
supply
module
Power supply from FX5 extension power supply module
(Only the 5 V DC power supply for the input module is
supplied by the extension power supply module.)
Bus
conversion
module
Ex.
Output current [mA]
Ambient
temperature []
Derating curve
FX5-1PSU-5V
1200
800
5540
300
200
5 V DC
24 V DC
Ex.