Frequently Asked Question

SETUP - OFFGRID - NO AC IN
Last Updated 7 months ago

Parameter Settings

Some parameters will adjust others to maintain minimum separation. Use caution.

CHARGING:

  1. Set Parm[07] to MAX Battery charging amps. Combined AC (none in this case) + PV.
  2. Set Parm[36] to MAX Amps from PV MPPT Charger. Usually set to MAX. Not available on DIY5048.

Battery:

  1. Set Parm[08] Battery type to USER
  2. Set Parm[17] to Absorb Voltage.
  3. Set Parm[18] to Absorb Time (Lead setting, use Lithium setting from manufacturer or 5 min)
  4. Set Parm[11] to Float Voltage (Effects Parm[37])
  5. Set Parm[37] to Voltage to restart charging, REBULK. (stays 1.2V lower than Parm[11] Float)
  6. Set Parm[16] to DISABLE for Lithium Battery (Equalize Function)

Low Battery Settings:

  1. Parm[14] Low battery Alarm-just beeps. (Must be .4V higher than Parm[04]-Switch to AC IN)
  2. Parm[12] Low Battery Warning with time delay.
  3. Parm[13] Low Battery Timer.  Used for momentary Surges that pull battery voltage down.
  4. Parm[15] Low battery immediate Inverter shutdown.  If this value is reach during the above timer period Inverter is shutdown.
  5. Parm[35] Battery under-voltage shutdown restart voltage.

Inverter Output:

  1. Parm[02] Sets AC Frequency of 50 or 60 hertz.  Leave at 60 unless you want trouble.
  2. Parm[38] Sets AC OUT Voltage from 100VAC to 120VAC. Don't Monkey with this.

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