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5 Designing the Power Supply System
NX-series EtherCAT Coupler Unit User’s Manual (W519)
5-
2 Desig
n
in
g t
h
e NX Un
it Po
wer Su
pp
ly System
5
5-
2-2 C
alculation Example for t
he NX Unit Power
Supply
NX Unit Power Supply Capacity and Restrictions
The internal power supply circuits of the EtherCAT Coupler Unit or Additional NX Unit Power Supply
Unit supply the NX Unit power to the NX Units.
The NX Unit power supply capacity does not include the NX Unit power consumption of the EtherCAT
Coupler Unit or Additional NX Unit Power Supply Units.
The NX Unit power supply capacity of the EtherCAT Coupler Unit is restricted by the following applica-
tion conditions.
• Ambient operating temperature
• Installation orientation
Consider these conditions and determine the required NX Unit power supply capacity, and then design
the NX Unit power supply system.
3-1-2 EtherCAT Coupler Unit Specifications
on page 3-2 for restrictions on the EtherCAT Cou-
pler Unit.
For restrictions on the Additional NX Unit Power Supply Unit, refer to the
NX-series System Units
User’s Manual
(Cat. No. W523).
Precautions for Correct Use
• Do not exceed the NX Unit power supply capacity. If you exceed the NX Unit power supply
capacity, malfunction may occur.
• Use the same Unit power supply to supply the Unit power to the entire Slave Terminal. If you
supply power from different Unit power supplies, differences in electrical potential may cause
unexpected currents in the NX Unit power supply, which may result in failure or malfunction.
This section provides a calculation example for the NX Unit power supply.
Unit Configuration Example
Application Conditions
The ambient operating temperature is 55
°
C and an upright installation orientation is used.
Calculating the Total Power Consumption from the NX Unit Power Supply
Calculate the total power consumption from the NX Unit power supply that is required by the NX
Units that are connected to the EtherCAT Coupler Unit. The NX Unit power consumption of the
EtherCAT Coupler Unit is not included in this calculation.
Total power consumption from NX Unit power supply [W] = (0.5 W × 5) + (0.8 W × 5) = 6.5 W
Confirming the NX Unit Power Supply Capacity of the EtherCAT Coupler Unit
According to the graph in
Installation orientation and restrictions
on page 3-2, the NX Unit power supply capacity is 8.5 W max. There-
fore, in this example, the total power consumption from the NX Unit power supply is 6.5 W, and the
NX Unit power supply capacity is 8.5 W max., so the design conditions are met.
5-2-2
Calculation Example for the NX Unit Power Supply
Name
Model
Quantity
Power consumption/Unit
EtherCAT Coupler Unit
NX-ECC201
1
1.45 W
Digital Input Unit
NX-ID3317
5
0.5 W
Relay Output Unit
NX-OC2633
5
0.8 W
Summary of Contents for NX-ECC201
Page 38: ...Sections in this Manual 36 NX series EtherCAT Coupler Unit User s Manual W519...
Page 46: ...1 EtherCAT Networks 1 8 NX series EtherCAT Coupler Unit User s Manual W519...
Page 56: ...2 Features and System Configuration 2 10 NX series EtherCAT Coupler Unit User s Manual W519...
Page 82: ...4 Part Names and Functions 4 14 NX series EtherCAT Coupler Unit User s Manual W519...
Page 100: ...5 Designing the Power Supply System 5 18 NX series EtherCAT Coupler Unit User s Manual W519...
Page 214: ...9 Setting Up Slave Terminals 9 44 NX series EtherCAT Coupler Unit User s Manual W519...
Page 254: ...11 EtherCAT Coupler Unit Functions 11 30 NX series EtherCAT Coupler Unit User s Manual W519...
Page 278: ...12 Communications Performance 12 24 NX series EtherCAT Coupler Unit User s Manual W519...
Page 340: ...14 Maintenance and Inspection 14 8 NX series EtherCAT Coupler Unit User s Manual W519...
Page 400: ...Appendices A 60 NX series EtherCAT Coupler Unit User s Manual W519...
Page 401: ...Index 1 NX series EtherCAT Coupler Unit User s Manual W519 I Index...
Page 405: ......