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26
Specifications and Configurations
Section 1-2
1-2-8
Backup Power Supply
The node bypass function can be used if each Controller Link Unit and Board
is connected to a backup power supply. The node bypass function prevents
the entire network from shutting down if the power supply to a single PLC or
personal computer is interrupted.
Backup Power Supply
Specifications
The following table shows the input specifications required for backup power
supplies to Controller Link Units and Boards. Be sure that the backup power
supply being used meets these specifications. (We recommend the OMRON
S82K Series.)
Note When using Controller Link Units in duplex operation in a CS1D System, pro-
vide backup power supplies for both the active and standby Controller Link
Units. If the backup power supply for the standby Unit is stopped, communica-
tions will be interrupted at that point and a disconnection will be detected.
When a single power supply is connected to several nodes or is some dis-
tance away from the node, make sure that the voltage at the node itself meets
the specifications in the table above. There will be some voltage drop in the
power supply wiring.
The power provided from the backup power supply will be used first if a
backup power supply is connected. Be sure to consider the following points
when designing the network.
1,2,3...
1.
Turn on the PLC or computer power supply after turning on the backup
power supply.
2.
If the backup power supply goes on or off, any data being transmitted at
that moment will be corrupted.
3.
Do not use the same power source to supply the backup power supply and
the PLC/computer. The node bypass function will not operate if the backup
power supply and the PLC/computer are both off.
4.
Use a dedicated power supply for the backup power supply. Do not share
a power supply being used for I/O, motors, or control systems.
Use a backup power supply that is double-insulated or one with reinforced
insulation.
Always maintain the power supply voltage within specifications.
Optical transmission path
Bypass
Computer
Power interruption
24-VDC
backup
power supply
PLC
PLC
PLC
Item
Specification
Voltage
24 V DC
Allowed voltage fluctuation
20.4 to 26.4 V DC (24 V DC –15% to +10%)
Current consumption
200 mA max. at 24 V DC (per node)
Inrush current
2.5 A max. (with a 24-V DC startup time of 5 ms)
Summary of Contents for CS1W-CLK12-V1
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 11: ...xii ...
Page 59: ...42 Component Names and Functions Section 3 1 Dimensions Unit mm ...
Page 62: ...45 Component Names and Functions Section 3 1 Dimensions Unit mm ...
Page 91: ...74 CVM1 and CV series Optical Ring Controller Link Units Section 4 2 ...
Page 108: ...91 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 125: ...108 Checking Data Link Status Section 5 4 ...
Page 181: ...164 Setting Routing Tables Section 7 4 ...
Page 199: ...182 Memory Areas Related to Duplex Operation Section 8 6 ...
Page 275: ...258 Handling Precautions Section 10 7 ...
Page 298: ...281 CS series Optical Bus Controller Link Units Appendix C Dimensions Unit mm 101 35 130 ...
Page 299: ...282 CS series Optical Bus Controller Link Units Appendix C ...