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4 - 9
4 Installation and Wiring
GX-series EtherCAT Slave Unit User’s Manual
4-3 C
onn
ectin
g
to Un
it Po
wer Su
ppl
y and
I/O Po
we
r Su
pp
ly
4
4-
3-2 U
nit Pow
er Supply Spe
cifications
Use a general purpose power supply that satisfies the following specifications.
We recommend S8JX series power supplies made by OMRON for the unit power supply for Slave
Units.
Precautions for Correct Use
•
The I/O power supply for the input section of the e-CON connector type Slave Units is shared
with the unit power supply. To calculate the output current of the unit power supply, be sure to
use "unit power supply current consumption" to which "input current" and "input connection
device supply current" have been added.
•
Use a power supply with sufficient capacity considering the inrush current at startup.
Connect a cable from the 24-VDC unit power supply to the unit power supply connector on each Slave
Unit, and supply power to individual Slave Units.
Mount a pin terminal, or equivalent to the unit power supply cable so that it will not be displaced.
4-3-2 Unit Power Supply Specifications
Item Specification
Output voltage 24 VDC
±
10%
Output ripple 600 mVp-p
Output current
Has the capacity to supply power more than the total current
consumption of each Slave Unit
Isolation
Between output and AC power supply as well as between output and
chassis ground
4-3-3 Connecting the Unit Power Supply
Digital I/O Slave Units, Analog I/O Slave Units, and Encoder Input
Slave Units
To 24-VDC unit
power supply
+
V
terminal
−
V
terminal
Unit power
supply cable
Pin terminal