Omron PRT1-COM Operation Manual page 52

Specific Example
Communication
Unit
24-VDC
power supply
40
Note The connecting cable for the I/O Unit is shown below.
Accessory Cable
40 mm
GCN1-100
• • • • Connecting Communication Unit and I/O Unit Power
Transistor Input Unit Transistor Output
with terminal block Unit with connector
24-VDC
power supply
Note Be sure to separate the communications power supply, the internal
power supply for the Communication Unit and the CPU Bus Unit, and
the power supplies for the I/O Units. If the same power supply is used,
malfunction due to noise may occur.
The capacity required for the Communication Unit internal power supply,
can be obtained using the following formula:
Communication Unit internal power supply current
= Communication Unit internal current consumption + Sum of I/O Unit
Interface current consumption
Note The above formula applies when a voltage of 24-VDC is supplied to
the Communication Unit internal power supply terminals. If the
supplied voltage becomes lower, the current consumption will
increase. Select a device for the power supply that will allow a degree
of variation.
When selecting a power supply, take inrush current into
consideration.
The following OMRON products are recommended for the 24-VDC
power supply:
S82K-05024:
S82K-10024:
S82J-5524:
S82J-5024:
For details of the I/O Unit interface current consumption for the Units,
refer to page 30, I/O Interface Current Consumption.
Select power supplies for the I/O Units that are suitable for the load currents to
be used and the Units' internal drive currents (refer to page 53).
1 m
Analog Input Unit Analog Output
Unit
24-VDC
power supply
100 to 120/200 to 240 VAC, 50 W
100 to 120/200 to 240 VAC, 100 W
100 to 120 VAC, 50 W
100 to 120 VAC, 100 W
Section 4-2