Mitsubishi Electric Melsec-Q172DCPU User Manual page 149

3 DESIGN
(7) Example of average power consumption calculation
(Q173DCPU use)
(a) System configuration
Q61P Q03UD
CPU
(b) 5VDC current consumption of each module
Q03UDCPU
Q173DCPU
QX40 (Note)
Q172DLX
Q172DEX
Q173DPX
QY10 (Note)
Q38DB (Note)
(c) Power consumption of power module
W = 3/7 (0.33 + 1.25 + 0.05 + 0.05 + 0.06 + 0.19 + 0.38 + 0.43 + 0.43 +
PW
0.23) 5 = 7.29 [W]
(d) Total power consumption for 5VDC logic circuits of all modules
W = (0.33 + 1.25 + 0.05 + 0.05 + 0.06 + 0.19 + 0.38 + 0.43 + 0.43 +
5V
0.23) 5 = 17 [W]
(e) A total of 24VDC average power consumption of the output module
W = 0 [W]
24V
(f) Average power consumption due to voltage drop in the output section of the
output module
W = 0 [W]
OUT
(g) Average power consumption of the input section of the input module
W = 0.004
IN
(h) Power consumption of the power supply section of the intelligent function
module.
W = 0 [W]
S
(i) Power consumption of overall system
W = 7.29 + 17 + 0 + 0 + 3.07 + 0 = 27.36 [W]
Q173D QX40 QX40 Q172D
CPU LX
(Note) : 0.33 [A]
: 1.25 [A]
: 0.05 [A]
: 0.06 [A]
: 0.19 [A]
: 0.38 [A] (Note) : 5VDC internal current consumption of shared
: 0.43 [A]
: 0.23 [A]
24 32 1 = 3.07 [W]
3 - 14
Q172D Q173D QY10
EX PX
equipments with PLC might be changed.
Be sure to refer to the MELSEC-Q series PLC
Manuals.
Q38DB
QY10