2-23
2 Basic System Configuration and Devices
CJ2 CPU Unit Hardware User’s Manual
2-1 Basic System Configuration
2
2-1-5 Calculating Unit Current Consumption
Example 1: In this example, the following Units are mounted to a CPU Rack with a CJ1W-PA205R
Power Supply Unit.
Example 2: In this example, the following Units are mounted to a CJ-series Expansion Rack with a
CJ1W-PA205R Power Supply Unit.
Example Calculations
Unit Model Quantity
Voltage group
5-V 24-V
CPU Unit CJ2H-CPU68-EIP 1 0.820 A ---
I/O Control Unit CJ1W-IC101 1 0.020 A ---
Input Units CJ1W-ID211 2 0.080 A ---
CJ1W-ID231 2 0.090 A ---
Output Unit CJ1W-OC201 2 0.090 A 0.048 A
Special I/O Unit CJ1W-DA041 1 0.120 A ---
CPU Bus Unit CJ1W-CLK23 1 0.350 A ---
Current consump-
tion
Calculation 0.820 A + 0.020 A +
0.080 A × 2 + 0.090 A × 2 +
0.090 A × 2 + 0.120 A +
0.350 A
0.048 A × 2
Result 1.83 A (≤5.0 A) 0.096 A (≤0.8 A)
Power consump-
tion
Calculation 2.51 A × 5 V = 9.15 W 0.096 A × 24 V = 2.304 W
Result 9.15 W + 2.30 W = 11.45 W (≤25 W)
Unit Model Quantity
Voltage group
5-V 24-V
I/O Interface Unit CJ1W-II101 1 0.130 A ---
Input Unit CJ1W-ID211 2 0.080 A ---
Output Unit CJ1W-OD231 8 0.140 A ---
Current consump-
tion
Calculation 0.130 A + 0.080 A × 2 +
0.140 A × 8
---
Result 1.41 A (≤5.0 A) ---
Power consump-
tion
Calculation 1.41 A × 5 V = 7.05 W ---
Result 7.05 W (≤25 W)
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