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10.1 Calculating Heat Generation of programmable controller
10
LOADING AND INSTALLATION
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.
(3) Example of calculation of average power consumption
(a) System configuration
(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
PW = 3/7 (0.43 + 0.46 + 0.10) 5 = 2.12(W)
(d) Total power consumption for 5 VDC logic circuits of all module
W
5V = (0.43 + 0.46 + 0.10) 5 = 4.95(W)
(e) Power consumption of overall system
W = 2.12 + 4.95 = 7.07(W)
Figure 10.1 System configuration
QS061P-A1 QS001CPU
QS0J61BT12
QS034