Example Calculations - Omron NJ501-1 Series User Manual

3 Configuration Units
2 Be sure to include the power required by the I/O Interface Unit when calculating current/power consump-
tion in an Expansion Rack.
Model
NJ-PA3001
NJ-PD3001
* 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.
Unit
CPU Unit
I/O Control Unit
Input Units
Output Unit
Special I/O Unit
CPU Bus Unit
Current consump-
tion
Power consump-
tion
Example 2: In this example, the following Units are mounted to a CJ-series Expansion Rack with an NJ-
PA3001 Power Supply Unit.
Unit
I/O Interface Unit
Input Unit
Output Unit
Current consump-
tion
Power consump-
tion
3-16
Output current
5-VDC CPU
5-VDC Expan-
*
sion Rack
Rack
6.0 A 6.0 A
6.0 A 6.0 A
Model Quantity
NJ501-1500 1 unit
CJ1W-IC101 1 unit
CJ1W-ID211 2 units
CJ1W-ID231 2 units
CJ1W-OC201 2
CJ1W-DA041 1
CJ1W-SCU22 1
Calculation
Result
Calculation
Result
Model Quantity
CJ1W-II101 1
CJ1W-ID211 2
CJ1W-OD231 8
Calculation
Result
Calculation
Result
Output
capacity
24 VDC
1.0 A 30 W
1.0 A 30 W
Voltage group
5-V
1.90 A
0.02 A
0.08 A
0.09 A
0.09 A
0.12 A
0.28 A
1.9 A + 0.02 A + 0.08 A  2
+ 0.09 A  2 + 0.09 A  2 +
0.12 A + 0.28 A
2.84 A (6.0 A)
2.84 A  5 V = 14.2 W
14.2 W + 2.30 W = 16.5 W (30 W)
Voltage group
5-V
0.13 A
0.08 A
0.14 A
0.13 A + 0.08 A  2 + 0.14
A  8
1.41 A (6.0 A)
1.41 A  5 V = 7.1 W
7.1 W (30 W)
NJ-series CPU Unit Hardware User's Manual (W500)
24-V
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0.048 A
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0.048 A  2
0.096 A (1.0 A)
0.096 A  24 V = 2.3 W
24-V
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