*2. The NC terminals are not connected to the internal circuits.
A-1-3
Additional I/O Power Supply Unit
Description of Items on the Data Sheet of the Additional I/O Power
Supply Unit
The meanings of the items on the data sheet of the Additional I/O Power Supply Unit are explained in
the table below.
Item Description
Unit name The name of the Unit.
Model The model of the Unit.
External connection ter-
minals
The type of terminal block and connector that is used for connecting the Unit. The
number of terminals on the terminal block is also described when a screwless
clamping terminal block is used.
Power supply voltage The rated voltage and voltage range of the I/O power supply that is supplied to the
Unit.
Maximum current of I/O
power supply
The maximum value of the current that can be supplied to the Units from the I/O
power supply to be connected to the Unit through the NX bus connectors.
Current capacity of I/O
power supply terminal
The current capacity of I/O power supply terminals of the Unit.
Dimensions The dimensions of the Unit. They are described as W × H × D. The unit is "mm".
Isolation method The isolation method between the I/O power supply terminal and internal I/O power
supply of the Unit.
Insulation resistance The insulation resistance between the external connection terminals and internal
circuit of the Unit.
Dielectric strength The dielectric strength between the external connection terminals and internal cir-
cuit of the Unit.
NX Unit power con-
sumption
The power consumption of the NX Unit power supply of the Unit. The power con-
sumption of the Unit connected to each of the following Units is separately given. If
some of the following Units can not be connected to the Unit, relevant information
is omitted.
• CPU Unit
• Communications Coupler Unit
• Communication Control Unit
Current consumption
from I/O power supply
The current consumption from I/O power supply of the Unit.
Weight The weight of the Unit.
Circuit layout The circuit layout of the Unit.
Installation orientation
and restrictions
The installation orientation of the Unit. The installation orientation of the Unit con-
nected to each of the following Units is separately given, along with details of the
specifications restricted due to the installation orientation, if any
. If some of the fol-
lowing Units can not be connected to the Unit, relevant information is omitted.
• CPU Unit
• Communications Coupler Unit
• Communication Control Unit
T
erminal connection di-
agram
A diagram of the connection between the Unit and connected external devices.
When an I/O Power Supply Connection Unit or a Shield Connection Unit is required
to be connected to the connected external devices, the description for such is in-
cluded.
Appendices
A-7
NX-series System Units User's Manual (W523)
A-1 Data Sheet
A
A-1-3 Additional I/O Power Supply Unit