3 Configuration Units
3-18
NJ-series CPU Unit Hardware User’s Manual (W500)
2 Be sure to include the power required by the I/O Interface Unit when calculating current/power consump-
tion in an Expansion Rack.
* Including supply to the CPU Unit.
Example Calculations
Example 1: In this example, the following Units are mounted to a CPU Rack with an NJ-PA3001 Power
Supply Unit.
Example 2: In this example, the following Units are mounted to a CJ-series Expansion Rack with an NJ-
PA3001 Power Supply Unit.
Model
Output current
Output
capacity
5-VDC CPU
Rack
*
5-VDC Expan-
sion Rack
24 VDC
NJ-PA3001 6.0 A 6.0 A 1.0 A 30 W
NJ-PD3001 6.0 A 6.0 A 1.0 A 30 W
Unit Model Quantity
Voltage group
5-V 24-V
CPU Unit NJ501-1500 1 unit 1.90 A ---
I/O Control Unit CJ1W-IC101 1 unit 0.02 A ---
Input Units CJ1W-ID211 2 units 0.08 A ---
CJ1W-ID231 2 units 0.09 A ---
Output Unit CJ1W-OC201 2 0.09 A 0.048 A
Special I/O Unit CJ1W-DA041 1 0.12 A ---
CPU Bus Unit CJ1W-SCU22 1 0.28 A ---
Current consump-
tion
Calculation 1.9 A + 0.02 A + 0.08 A 2
+ 0.09 A 2 + 0.09 A 2 +
0.12 A + 0.28 A
0.048 A 2
Result 2.84 A (6.0 A) 0.096 A (1.0 A)
Power consump-
tion
Calculation 2.84 A 5 V = 14.2 W 0.096 A 24 V = 2.3 W
Result 14.2 W + 2.30 W = 16.5 W (30 W)
Unit Model Quantity
Voltage group
5-V 24-V
I/O Interface Unit CJ1W-II101 1 0.13 A ---
Input Unit CJ1W-ID211 2 0.08 A ---
Output Unit CJ1W-OD231 8 0.14 A ---
Current consump-
tion
Calculation 0.13 A + 0.08 A 2 + 0.14
A 8
---
Result 1.41 A (6.0 A) ---
Power consump-
tion
Calculation 1.41 A 5 V = 7.1 W ---
Result 7.1 W (30 W)
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