Mitsubishi Electric MELSEC iQ-F FX5U User Manual page 69

Check of limitation on current consumption
Check if power required for extension devices can be supplied from the CPU module and extension power supply module.
A case using service power supply for input circuit is explained as an example.
■ Check of power supply from the CPU module
(Page 56 Power supply check from the CPU module (current consumption calculation))
• Power supply capacity of the CPU module
Type
CPU module
• Current consumption of extension devices
Type
Expansion board
Expansion adapter
Expansion adapter
Input module
Output module
Output module
Output module
Simple motion module
Bus conversion module
Pulse output module
Analog input module
Temperature controller module
AnyWireASLINK master module
CC-Link intelligent device module
Capacity of 5 V DC
Current consumption
power supply
Total of current
CPU module
consumed by extension
module
-
900 mA
Capacity of 24 V
Current consumption
DC power supply
Total of current
CPU module
consumed by extension
module
-
400 mA
Result check
Because calculation results for 5 V DC or 24 V DC current consumption are negative, reconfiguration is necessary.
The judgment procedure after reconfiguration is explained on the following pages.
Model Power supply capacity
5 V DC power supply
FX5U-32MR/ES 900 mA
Model
FX5-232-BD
FX5-232ADP
FX5-485ADP
FX5-16EX/ES
FX5-16EYT/ES
FX5-16EYT/ES
FX5-16EYR/ES
FX5-40SSC-S
FX5-CNV-BUS
FX3U-1PG
FX3U-4AD
FX3U-4LC
FX3U-128ASL-M
FX3U-64CCL
Calculation result
=
1170 mA -270 mA
Calculation result
=
520 mA -120 mA
4.5 Rules of System Configuration and Examples of Reconfiguration
24 V DC service power supply
400 mA
(Service power supply is used for input circuit)
Current consumption
5 V DC power supply 24 V DC power supply

20 mA
30 mA 30 mA
20 mA 30 mA
100 mA 85 mA
100 mA 125 mA
100 mA 125 mA
100 mA 125 mA
 
150 mA 

150 mA
110 mA 

160 mA
130 mA 
 
NG
NG
4 SYSTEM CONFIGURATION
4
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