Relay board 1 connections
Relay | Function | Mode | Special | Comments | 
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Output 1  | Common alarm  | Fail safe  | 
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Output 2  | Normal operation  | Active on  | 
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Output 3  | Bypass operation  | Active on  | 
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Output 4  | Battery operation  | Active on  | 
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Output 5  | VDC out of tolerance  | Fail safe  | 
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Output 6  | Battery conditon fault  | Fail safe  | 
  | Battery fault detected by  | 
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  | battery monitor  | 
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Output 7  | Maintenance bypass  | Active on  | 
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  | operation  | 
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Output 8  | Mains out of tolerance  | Fail safe  | 
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Output 9  | Bypass out of tolerance  | Fail safe  | 
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Output 10  | Output out of tolerance  | Fail safe  | 
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Output 11  | MCCB open  | Fail safe  | 
  | Battery breakers open  | 
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Output 12  | System overload  | Fail safe  | 
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Output 13  | Good utility  | Active on  | 
  | If UPS goes into bypass,  | 
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  | this relay goes on without  | 
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  | delay  | 
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Output 14  | Boost charge active  | Fail safe  | 
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Output 15  | Fan fault  | Fail safe  | 
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Output 16  | Temperature fault  | Fail safe  | 
  | Temperature switch active  | 
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  | or faulty temperature sensor  | 
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Input 1  | Generator active  | 
  | Master will handle  | Input for indicating that a  | 
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  | signal  | generator is active. This will  | 
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  | be used to reduce the charge  | 
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  | power  | 
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Input 2  | Battery room ventilation  | 
  | Individual  | Input for indicating that the  | 
  | fault  | 
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  | ventilation in battery rooms  | 
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  | is defect. This will be used  | 
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  | to reduce the charge power  | 
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Input 3  | DC Ground Fault  | 
  | Individual  | 
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  | Detection  | 
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Input 4  | Reserved for future use  | 
  | Master will handle  | 
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  | signal  | 
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Input 5  | Plant clock  | 
  | Master will handle  | Input for real time clock  | 
  | synchronization  | 
  | signal  | synchronization  | 
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Input 6  | Power Tie detection  | 
  | Master will handle  | Input from PLC to detect if  | 
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  | signal  | Power Tie is active  | 
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14  | Symmetra MW II 1200 kW 3 x 400/230 V Installation -   |