Mitsubishi Electric MELSEC iQ-R Series Configuration Manual page 196

Power consumption of a power supply module
When a power supply module with the power conversion efficiency of approximately 70%, the remaining 30% is dissipated as
heat, so that 3/7 of the output power will be the power consumption.
Therefore, the power consumption of a power supply module, or W
3
W = × { (I × 5) + (I
PW 5v
7
I : Internal current consumption 5VDC of each module
5V
I : Average current consumption (current consumption for the number of simultaneous on points) of 24VDC power supply
24V
for the output module internal consumption
This does not apply to a case where a power supply module that does not have the 24VDC output is used and 24VDC is
supplied from the outside.
*1 The value 3/7 varies according to the power conversion efficiency. For example, when the efficiency is approximately 75%, the value is
1/4.
Check the efficiency of the power supply module used and determine the value. ( Page 85 Performance Specifications of Power
Supply Module)
Total of the internal current consumption 5VDC of each module
The power consumption of the 5VDC output in the power supply module is that of each module including the base unit and
* 1
CPU module.
The total of the internal current consumption 5VDC of each module, or W
 5(W)
W = I
5V 5V
*1 For the power consumption of the Motion CPU, refer to the following.
 MELSEC iQ-R Motion Controller User's Manual
For the power consumption of the NCCPU, refer to the following.
 C80 Series Connection and Setup Manual
Total of the 24VDC average power consumption of the output module
The average power consumption (power consumption for the number of simultaneous on points) of the 24VDC power supply
for the output module internal consumption is equal to the total power consumption of each output module.
The total average power consumption 24VDC of output modules, or W
 24  Simultaneous on ratio (W)
W = I
24V 24V
Average power consumption when the voltage drop of the output module occurs
The average power consumption (power consumption for the number of simultaneous on points) due to a voltage drop at the
output sections of output modules, or W
 V
W = I
OUT OUT drop
I : Output current (current in actual use) (A)
OUT
V : Voltage drop of each output module (V)
drop
Average power consumption at the input section of the input module
The average power consumption (power consumption for the number of simultaneous on points) at the input sections of input
modules, or W , is given by the following formula:
IN
 E  Number of input points  Simultaneous on ratio (W)
W = I
IN IN
I : Input current (effective value for AC) (A)
IN
E: Input voltage (voltage in actual use) (V)
Power consumption of the external power supply used for each module
The power consumption of the external power supply section of each intelligent function module, or W
following formula:
 24(W)
W = I
S 24V
APPX
194
Appendix 9 Calculating Heating Value of Programmable Controller
× 24) } (W)
24v
, is given by the following formula:
OUT
 Number of output points  Simultaneous on ratio (W)
*1
, is given by the following formula:
PW
, is given by the following formula:
5V
, is given by the following formula:
24V
, is given by the
S