Mitsubishi Electric MELSEC iQ-F FX6U Hardware User Manual page 78

When connecting an input module after (on the right side of) the extension power supply module
When using 24 V DC service power supply of the CPU module or powered input/output module for input
circuit of an input module, include the input module in the 24 V DC current consumption calculation.
5 V DC power supply of the input module is supplied from the extension power supply module.
CPU module,
Powered
input/output
module
Power supply from CPU module or
powered input/output module
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.
Check if expansion to the extension power supply module is permitted.
• 5 V DC power supply
Capacity of 5 V DC
power supply
Extension power
supply module
mA
1200 mA
Ex.
• 24 V DC power supply
Capacity of 24 V DC
power supply
Extension power
supply module
mA
300 mA
Ex.
If the calculation result is a negative value, the current consumption exceeds the power supply capacity of the extension
power supply module.
Reconfigure the system, adding powered input/output module or extension power supply modules.
4 SYSTEM CONFIGURATION
76
4.4 Limitation on Current Consumption
Extension
FX5
power
Input
Intelligent
supply
module
module
module
Total current consumption
460 mA
125 mA
Current consumption
Total of current
consumed by extension
module
-
mA
460 mA
Current consumption
Total of current
consumed by extension
module
-
mA
125 mA
FX5
Input
Intelligent
module
module
When the CPU module or powered input/output module
supplies the 24 V DC power supply for the input circuit, current
consumption of 24 V DC should be included in the supply
range from the CPU module or powered input/output module.
Calculation result
= mA ≥
740 mA
Calculation result
= mA ≥
175 mA
0 mA
0 mA