Instruction manual

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2 SYSTEM CONFIGURATION
(3) Selection of the power supply module
The power supply module is selected according to the total of current
consumption of the modules, and peripheral devices supplied by its power
module.
5VDC internal current consumption of shared equipments with PLC might be
changed. Be sure to refer to the MELSEC-Q series PLC Manuals.
(a) Calculation example of power supply selection
<System configuration (Q173DSCPU use)>
MR-HDP01
MR-HDP01
Q171ENC-W8
Q38DB
QY10 QY10Q03UD
CPU
Q61P QX40 QX40 Q173DPXQ172DLX Q172DEXQ173DS
CPU
Incremental synchronous encoder
• 5VDC current consumption of each module
Q03UDCPU : 0.33 [A] Q171ENC-W8 : 0.25 [A]
Q173DSCPU : 1.75 [A] Q173DPX : 0.38 [A]
Incremental synchronous encoder : 0.20 [A] MR-HDP01 : 0.06 [A]
QX40 : 0.05 [A] QY10 : 0.43 [A]
Q172DLX : 0.06 [A] Q38DB : 0.23 [A]
Q172DEX : 0.19 [A]
• Power consumption of overall modules
I
5V = 0.33 + 1.75 + 0.20 + 0.05
2 + 0.06 + 0.19 + 0.25 + 0.38 + 0.06
2 + 0.43
2 + 0.23 = 4.47[A]
Select of the power supply module (Q61P (100/240VAC) 6A) according to
this internal current consumption 4.47[A].
POINT
Configure the system in such a way that the total current consumption at 5VDC of
all the modules is the allowable value or less.