Failure of the Normal Power Source
When the voltage of the normal power source falls below the preset dropout voltage, the engine start timer begins. The factory setting for the engine start timer is three seconds. None of the LED indicators will be illuminated. If the voltage of the normal power source remains below the dropout value throughout the cycle of the engine start timer, a signal will be sent in order to start the generator. The "NORMAL POSITION" LED and the "EMERGENCY AVAILABLE" LED will be illuminated. The MX100 controller will then monitor the voltage of the generator and the frequency of the generator. When the voltage and frequency of the generator reach acceptable levels, the delay to EMERGENCY timer begins. The "DELAY TO EMERGENCY" LED will be illuminated.
When the delay to EMERGENCY timer completes the cycle, the "DELAY TO EMERGENCY" LED will no longer be illuminated. The transfer to the emergency power source is then completed in the following manner.
For the CTG models, the ATS transfers the load to the EMERGENCY position. Power is delivered to the load by the generator. The "EMERGENCY POSITION" LED will become illuminated and the "NORMAL POSITION" LED will no longer be illuminated. If the A6 or T3/W3 options are installed on the unit, a presignal is initiated. Then, the TA6 timer starts. The "PRESIGNAL ON" LED and the "PRESIGNAL TIME DELAY TO EMERGENCY" LED will be illuminated. After the TA6 timer is completed, the ATS transfers the load to the EMERGENCY position. The "EMERGENCY POSITION" LED will become illuminated and the "NORMAL POSITION" LED will no longer be illuminated. Also, the "PRESIGNAL TIME DELAY TO EMERGENCY"LED and the "PRESIGNAL ON" LED will no longer be illuminated.
For CTGD models, the ATS opens out of NORMAL to the open position. The "OPEN POSITION" LED will become illuminated and the "NORMAL POSITION" LED will no longer be illuminated. The delay timer from open to EMERGENCY begins. The "DELAY TO OPEN EMERGENCY" LED will become illuminated. Once the timer has completed the cycle, the switch transfers the load to the EMERGENCY position. The "EMERGENCY POSITION" LED will become illuminated and the "OPEN POSITION" LED will no longer be illuminated. Also, the "DELAY TO OPEN EMERGENCY" LED will no longer be illuminated.
Restoration of the Normal Power Source
When the voltage and frequency of the normal power source reach the respective pickup values, the delay to NORMAL timer begins. The "DELAY TO NORMAL" LED will become illuminated. If the voltage of the normal power source remains above the pickup value for the duration of the delay to NORMAL timer, the transfer to NORMAL is accomplished. The "NORMAL AVAILABLE" LED will become illuminated and the "DELAY TO NORMAL" LED will no longer be illuminated.
For the CTG models, the ATS transfers the load to the NORMAL position. The "NORMAL POSITION" LED will be illuminated and the "EMERGENCY POSITION" LED will no longer be illuminated. Power is delivered to the load by the utility. If the A6 or T3/W3 options are installed on the unit, a presignal is initiated. The "PRESIGNAL ON" LED will become illuminated. Then, the TA6 timer starts. The "PRESIGNAL TIME DELAY TO NORMAL" LED will become illuminated. After the TA6 timer is completed, the ATS transfers the load to the NORMAL position. The "PESIGNAL ON" LED and the " PRESIGNAL TIME DELAY TO NORMAL" LED will no longer be illuminated. The "NORMAL POSITON" LED will become illuminated and the "EMERGENCY POSITION" LED will no longer be illuminated.
For CTGD models, the ATS opens out of EMERGENCY to the open position. The "OPEN POSITION" LED will become illuminated and the "EMERGENCY POSITION" LED will no longer be illuminated. The delay timer from open to NORMAL begins. The "DELAY TO OPEN NORMAL" LED will become illuminated. Once the timer has completed the cycle, the switch transfers the load to the NORMAL position. The "DELAY TO OPEN NORMAL" LED will no longer be illuminated. The "NORMAL POSITION" LED will become illuminated and the "EMERGENCY POSITION" LED will no longer be illuminated.
The engine cooldown timer begins. The "DELAY ENGINE STOP" LED will become illuminated and the "EMERGENCY AVAILABLE" LED will no longer be illuminated. When the engine cooldown timer completes the cycle, the engine will shut down. The "DELAY ENGINE STOP" LED will no longer be illuminated.