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a. Unit Specifications
Model
Current consumption from I/O power
supply
Input current
NX-PF0730
10 mA
---
NX-ID3317
0 mA
6 mA/point
NX-OD3121
10 mA
---
b. Calculations
The current consumption from the I/O power supply for each Unit is calculated as follows.
NX-PF0730 Current Consumption
=
Current consumption from I/O power supply
=
10 mA
NX-ID3317 Current Consumption
=
Current consumption from I/O power (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
NX-OD3121 Current Consumption
=
Current consumption from I/O power 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
The required power supply capacity for the I/O power supply is calculated as follows.
Power supply capacity of I/O power sup-
ply
=
(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
4-17
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
4-3 Designing the I/O Power Supply System
4
4-3-2
Designing the I/O Power Supply from the NX Bus
Summary of Contents for NX1P2 series
Page 8: ...Manual Structure 6 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 52: ...Revision History 50 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 82: ...2 System Configuration 2 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 258: ...Appendices A 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 259: ...I Index I 1 NX series NX1P2 CPU Unit Hardware User s Manual W578 I...
Page 262: ...Index I 4 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 263: ......