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Connecting to the Network Section 3-6
17. If communications are adversely affected by noise from the Unit’s power
supply terminals, the problem may be solved by implementing the mea-
sures shown below.
a) Add to the communications retry processing at the application. In par-
ticular, noise resistance capacity can be improved by increasing the
number of retries for applications using UDP.
b) Insert a noise filter right next to the Unit’s power supply terminals.
Power Supply
Specifications
The following table shows the power supply specifications. Make sure that
these specifications are met.
OMRON’s S82J Series is recommended for the power supply.
General Switching Power Supply Configuration
Communications Power Supply Isolation Method
AC power supply
AC input
DC output
Case
S8J2 Power Supply
S82Y-@@N (Mounting Stand)
DC power supply
Insulating material (bakeboard, acrylic board, etc.)
(1) When S82J is used. (2) When another power supply is used.
Switching power supply
Power
supply
circuit
Standard Switching Power Supply Circuit
24 VDC
Noise filter
24-VDC power supply
As close as possible
Recommended filter: MAS-1206-33 by Nemic-Rambda K.K.
Specifications Rated voltage: 250 V (AC, DC)
Rated current: 6 A
Dimensions
105.5 x 52.5 x 40 mm (W x H x D)
(Not including connector.)
Item Specifications
Power supply voltage 24 VDC
Allowable power supply voltage
fluctuation
20.4 VDC to 26.4 VDC (24 VDC –15% + 10 %)
Current consumption 300 mA max. at 24 VDC (per node)
Inrush current 2.5 A max. (24 VDC when rise time is 5 ms)