Omron NJ501-1400 User Manual page 105

Calculation Examples
These examples show how to calculate the power consumption (W) for the following system.
CPU Rack
Power Supply
Unit
Units
CPU Unit NJ501-1500
Input Units CJ1W-ID261
Output Unit CJ1W-OD261
Special I/O CJ1W-MAD42
Units
* The maximum load current of an Output Unit is the limit for the entire Unit.
 Total Power Consumption of the Controller (W_Gross)
W_Gross = (1.9 + 0.09  2 + 0.17  2 + 0.58  2) A  5 V  0.7= 25.6 W
 Basic I/O Unit Power Consumption (W_IO_ONOFF)
W_IO_ONOFF = 24 V  0.0041 A  64 points  2 Units + 0.1 V  6.4 A  2 Units = 13.9 W
 Average Power Consumption (W)
W = W_Gross + W_IO_ONOFF = 39.5 W
NJ-series CPU Unit Hardware User's Manual (W500)
NJ501-1500
CPU Unit
CJ1W-ID261 × 2
CJ1W-OD261 × 2
Basic I/O Units
Model Quantity
1 Unit
2 Units
2 Units
2 Units
CJ1W-MAD42 × 2
Special I/O Units
5 VDC
1.90 A ---
0.09 A Rated input voltage: 24 V
Input current: 4.1 mA
Number of input points: 64
0.17 A Residual voltage: 0.1 V
Maximum load current: 6.4 A/Unit
0.58 A ---
3 Configuration Units
Other
3-21
3