Mitsubishi Electric MELSEC iQ-F Series, User Manual

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4 SYSTEM CONFIGURATION
4.4 Limitation on Current Consumption
4.4
Limitation on Current Consumption
Power required for expansion adapters, expansion boards, and extension modules is supplied from the CPU module,
powered input/output 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.
• Current consumption calculation of the 5V DC power supply is not required.
• Current consumption calculation of the expansion board and expansion adapter is not required.
• For the extension module, current consumption calculation is not required when the total number of
occupied input/output points is 32 points or less, and up to two extension modules are connected. For the
subsequent extension modules, each module consumes 200 mA from the 24 V DC power supply.
Calculate following the procedure below.
1.
Check the power supply capacity of the CPU module used.
(

Page 40 CPU Module)
*1 Value when 24 V DC 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 extension modules which requires current consumption calculation.
(

Page 41 I/O module)
(

Page 44 Intelligent function module)
Type Model Type Model Power supply capacity (24 V DC service power
supply)
CPU module FX5UJ-40MT/ES 400 mA
*1
Type Model Current consumption (24 V DC power supply)
Expansion board FX5-232-BD (1) Calculation is not required
Expansion adapter FX5-232ADP Calculation is not required
Output module FX5-16EYT/ES (2)  Calculation is not required (Output points: 16 points)
Input module FX5-16EX/ES

Calculation is not required (Input points: 16 points)
Simple motion module FX5-40SSC-S (3) 200 mA
(1): Current consumption calculation of the expansion board and expansion adapter is not required.
(2): Current consumption calculation is not required when the total number of occupied input/output points is 32 points or less, and up to two extension modules
are connected. (In the above example, calculation is not required because

+

=32 points or less.)
(3): Each module of the subsequent expansion modules consumes 200 mA from the 24 V DC power supply.
Power supply from CPU module
CPU module
Ex.
Expansion
adapters
Expansion
board
Intelligent
module
Output
module
Input
module
Ex.
Ex.