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Q: How do I configure settings for an AC Input (grid or generator backup)?

Step 1: Safety and Physical Connection

  1. Power Down: Before connecting any wires, ensure the solar isolator is off and wait 5 minutes for the electricity to discharge.
  2. Connect AC Input:
    • For 230V Inverters: Connect your 1-phase AC backup wires to the terminals labeled L (Active/Red), N (Neutral/Black), and the Earth terminal.
    • For 380V-415V Inverters: Connect your 3-phase backup wires to the terminals labeled R, S, and T, along with the Earth terminal.
  1. Power Up: Turn on the backup power source and the solar isolator.

Step 2: Access the Settings Menu

  1. Stop the Pump: You must stop the pump using the On/Off button before changing settings.
  2. Navigate to Settings: Press the UP or ESC button until you see the screen displaying the inverter's Model Number.
  3. Enter Password: Press Enter. When prompted for a password, input 0000 (use UP/DOWN to change numbers and Enter to move to the next digit). If 0000 fails, use the super password 9590.

Step 3: Select Backup Priority

  1. Scroll down to "2. Hybrid Power" and press Enter.
  2. Select "Priority" and press Enter.
  3. Choose your mode based on your needs:
    • Solar First (Recommended): Solar is the priority. When the solar frequency drops below your minimum setting (LE Hz), the AC backup supplements the power automatically.
    • AC Sync: Select this if you want the AC input to be active whenever it is available, entering pure solar mode only when the grid/generator is unavailable.
  1. Press Enter to confirm your selection.

Step 4: Configure the Switch-Over Point (LE Hz)

This setting determines when the backup power kicks in.

  1. Under the Hybrid Power menu, scroll to "Parameters" and press Enter.
  2. You will see "LE: 30Hz In 20 Sec".
    • LE Hz: Change this to the minimum speed your pump needs to deliver water (typically 25Hz to 35Hz). If the solar power causes the frequency to drop below this number for the set time, the AC backup will take over.
    • Detecting Time (20S): This is how long the power must be low before the backup activates.
    • Restart Time (20M): This is how long the system waits before trying to switch back to pure solar.
  1. Press Enter to save each value.