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Cables, Connectors, and Related Devices Section 2-3
2-3-9 Communications Power Supply
In a DeviceNet system, a 24-V DC communications power supply must be
supplied to the Network. The communications power supply must meet the
specifications listed in the following table and the AC inputs and DC outputs
must be isolated.
The OMRON S82J-series and S82K-series Power Supply Units are recom-
mended. Select a Power Supply Unit with a current capacity that can comfort-
ably handle the total power consumption of all connected nodes and allow for
future expansion if necessary.
Communications Power Supply Specifications
The communications power supply must meet the following specifications.
DRS3-1 Shielded Mini-size Connector with Terminating Resistance
(male plug)
DCN4-TM4 Used to connect the DCN4-TR4-1.
DCN4-TP4D Flat Cable Power Supply Terminal Block with Terminating
Resistance
When flat cable is used, communications power can be sup-
plied from the terminals on this terminal block.
Model Remarks
Item Specifications
Output voltage 24 V DC ±1%
Output current 16 A max.
Input fluctuation 0.3% max.
Load fluctuation 0.3% max.
Temperature effect 0.03%/°C max.
Input voltage 100 to 1,200 V
Input frequency 47 to 450 Hz
Output ripple 250 mVp-p
Output capacitance 7,000 µF max.
Ambient temperature Operating: 0 to 60°C
Storage: −40 to 85°C
Max. instantaneous output
current
65 A max. (peak)
Overvoltage protection Must be provided.
Overcurrent protection Must be provided. (max. current: 125%)
Startup time Must reach 5% of final output voltage within 250 ms.
Startup overshoot 0.2% max.
Insulation Between output and AC power and between output
and chassis ground
Standards Required: UL
Recommended: FCC Class B, CSA, TÜV, and VDE
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