Appx.1-6
<Toc> <Ind>
<Appendix 1. Details on Network Configuration >
IM 34M6H28-01E
Appendix 1.4
Configuration of Network Power
Supply
Two lines out of the five special cables are 24 V DC power supply lines used for communi-
cation. It is necessary to provide power supply to the connectors of all nodes through these
cables.
When using only one power supply to a single network, you can connect it directly to the
trunk line. However, when using multiple network power supply, use the special power
supply tap.
■
Power Supply Specifications
Power supply specifications of DeviceNet is shown in the following table. Use the power
supply that meets these specifications.
Table 1.3 Power Supply Specifications for DeviceNet
Specifications
Parameter
Initial tolerance
24 V
±
1% or adjustable to 0.2%
Line regulation
0.3% max.
Load regulation
0.3% max.
Temperature coefficient
0.03% per deg. C max.
Input voltage range
120 V
±
10%
230 V
±
10% (if necessary) or
automatic switching in range 95 to 250V
Input frequency range
48 to 62 Hz minimum.
Output ripple
250 mVp-p
Load capacitance
7000
µ
F max.
Temperature limits
When operating : 0 to 60
°
C*
When not operating: -40 to 85
°
C
* Operating at 60
°
C will lower the rated output.
Inrush current limit
Less than 65 amps peak
Overvoltage protection
Available (No set value)
Overcurrent protection
Available (Current Limit : 125% max.)
Turn-on time (with full load)
250 m sec max./ 5% of final value
Turn-on overshoot
0.2% max.
Stability
0 to 100% of load (for all conditions)
Insulation
Insulated from AC and chassis ground
Agency approvals
Required : UL
Optional : FCC Class B, CSA, TUV, VDE
Humidity
5 to 95% (non-condensing)
Output voltage
24V
6
1%
Output current
Up to 16A continuous
Surge current capacity
10% reverse capability
TA0103.EPS
1st Edition : Feb.01,1999-00
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