Omron NX1P2 Series Hardware User Manual page 133

a. Unit Specifications
Model
NX-PF0730
NX-ID3317
NX-OD3121
b. Calculations
The current consumption from the I/O power supply for each Unit is calculated as follows.
NX-PF0730 Current Consumption
NX-ID3317 Current Consumption
NX-OD3121 Current Consumption
The required power supply capacity for the I/O power supply is calculated as follows.
Power supply capacity of I/O power sup-
ply
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
Current consumption from I/O power
supply
10 mA
0 mA
10 mA
= Current consumption from I/O power supply
= 10 mA
= Current consumption from I/O power supply + (Input
current × Number of inputs used) + Total current con-
sumption of connected input devices
= 0 mA + (6 mA × 4 points) + (50 mA × 4 points)
= 224 mA
= Current consumption from I/O power supply + Total load
current of connected loads + Total current consumption
of connected output devices
= 10 mA + (125 mA × 4 points) + (50 mA × 4 points)
= 710 mA
= (Current consumed by NX-PF0730) + (Current con-
sumed by NX-ID3317) + (Current consumed by NX-
OD3121)
= 10 mA + 224 mA +710 mA
= 944 mA
4 Designing the Power Supply System
Input current
---
6 mA/point
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4
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