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Power Supply Unit Section 3-2
3-2-1 Power Supply Unit Components
The following diagram shows the basic components of a Power Supply Unit.
Crimp Terminals
Use the crimp terminals shown below for Power Supply Unit wiring. The con-
nectors should be less than 7 mm wide and the wires should be between 1.04
and 2.63 mm
2
.
3-2-2 Selecting a Power Supply Unit
As mentioned previously, there are three AC Power Supply Units and one DC
Power Supply Unit. Select the appropriate Power Supply Unit based on the
total 5-V DC current requirements of the Units in the configured system and
the 24-V DC output terminals (PA206/PA216).
Calculation Example:
To calculate the capacity required for a PC configuration consisting of the
CPU Unit (e.g., CPU21), two 16-point DC Input Units, and three 16-point Con-
tact Output Units, perform the following calculation:
CPU Unit (CPU21) current capacity + 16-point Input Unit current capacity
× 2
+ 16-point Contact Output Unit current capacity
× 3 = 0.82 + 0.085 × 2 + 0.85
× 3 = 3.54
A Power Supply Unit with a capacity of at least 3.54 A is required.
Power supply Model number Crimp terminal
AC power CQM1-PA203
CQM1-PA206
CQM1-PA216
DC power CQM1-PD026
Power Indicator
Lit when power is being supplied.
External terminals
7.0 mm max.
7.0 mm max.
7.0 mm max.
Model number Capacity
CQM1-PA203 5 V DC, 3.6 A (18 W)
CQM1-PA206,
CQM1-PA216
5 V DC, 6.0 A; 24 V DC output, 0.5 A (30 W total)
The total power consumption from the 5-V DC supply and 24-V DC output must be less than 30 W. In
other words: 5 V DC current consumption × 5 + 24 V DC current consumption × 24 ≤ 30 (W).
CQM1-PD026 5 V DC, 6 A (30 W)
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