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Appendix C
Unit Current and Power Consumption
Maximum Current and Power Supplied
There are limits to the current and power that can be supplied to each Rack and Unit. When designing the system,
take the current consumption into account.
Follow the charts below and be careful that the total current consumption does not exceed the maximum current
and maximum total power supplied.
Current Supplied
Model number Max. current supplied
Maximum
5 V 26 V 24 V
(No-voltage
contact
current)
power
supplied
C200HW-PA204 4.6 A 0.6 A --- 30 W
C200HW-PA204S 4.6 A 0.6 A 0.8 A 30 W
C200HW-PA204R 4.6 A 0.6 A --- 30 W
C200HW-PA209R 9.0 A 1.3 A --- 45 W
C200HW-PD024 4.6 A 0.6 A --- 30 W
Note The sum total of the 5-V, 26-V, and 24-V power consumptions must be equal to or less than 30 W for the
PA204j, or equal to or less than 45 W for the PA209.
Design the system so that the following conditions are satisfied.
Condition 1
(1) (Total current consumption of all Units in the 5-V system) ≤ (the figure in the
5-V column)
(2) (Total current consumption of all Units in the 26-V system) ≤ (the figure in the
26-V column)
(3) (Total current consumption of all Units in the 24-V system) ≤ (the figure in the
24-V column)
Condition 2
(1) x 5 V + (2) x 26 V + (3) x 24 V ≤ (maximum power supplied)
Calculating Current and Power Consumption
The method of calculating current and power consumption is demonstrated here using the following Unit combina-
tions as examples.
Example 1: For C200HW-PA204S
OC221 Contact Output Units: 4 Units
ID211 No-voltage Input Units: 3 Units
LK202 Host Link Unit: 1 Unit
External power supply used: 0.3 A
Power Supply
Current Consumption Power Consumption
5-V system 0.01 x 7 + 0.25 = 0.32 A (≤ 4.6 A) 0.32 A x 5 V = 1.6 W
26-V system 0.075 x 4 = 0.30 A (≤ 0.6 A) 0.30 A x 26 V = 7.8 W
24-V system 0.06 x 3 + 0.3 = 0.48 A (≤ 0.8 A) 0.48 A x 24 V = 11.52 W
Total = 20.92 W (≤ 30 W)
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