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What is the use of the Terminal Numbers 5 to 10 on UA Controller in an Automatic Source-changeover System.

The Terminal Numbers 5 to 10 on the UA Controller in an Automatic Source-changeover System can be used as follows: 

1. Terminal Number 5 to open the normal source (with pushbutton for example)
2. Terminal Number 6 to open the replacement source
3. Terminal Number 7 to close the normal source
4. Terminal Number 8 to close the replacement source
5. Terminal Number 9 Supply (P / +)
6. Terminal Number 10Supply (P or N / -)
 
Refer the attachment for the Inter-connection wiring diagram of UA Controller, IVE and ACP.
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