Mitsubishi Electric QS001CPU User Manual page 78

10
LOADING AND INSTALLATION
(3) Example of calculation of average power consumption
10
- 4 10.1 Calculating Heat Generation of programmable controller
POINT
If the temperature inside the panel has exceeded the specified range, it is
recommended to install a heat exchanger to the panel to lower the temperature.
If a normal ventilating fan is used, dust will be sucked into the programmable
controller together with the external air, and it may affect the performance of the
programmable controller.
(a) System configuration
QS061P-A1 QS001CPU
(b) 5 VDC current consumption of each module
QS001CPU : 0.43(A)
QS0J61BT12 : 0.46(A)
QS034B : 0.10(A)
(c) Power consumption of power supply module
W = 3/7 (0.43 + 0.46 + 0.10) 5 = 2.12(W)
PW
(d) Total power consumption for 5 VDC logic circuits of all module
W = (0.43 + 0.46 + 0.10) 5 = 4.95(W)
5V
(e) Power consumption of overall system
W = 2.12 + 4.95 = 7.07(W)
QS034
QS0J61BT12
Figure 10.1 System configuration