Display
Description
Max Charge Curr
Max Grid Chg Cur
Force Curr.Set
Batt Low Volt
Max charge current set.
Maximum current setting for charging from grid.
When the battery is discharged to the force SOC, the inverter
will continue to be force charged with this value.
When there is grid power, the battery discharges to Batt_low,
and the battery stops discharging. If there is a load, PV will
charge the battery, and the grid will supply power to the load.
If the charge form PV+GRID is set, the grid power will also
charge the battery at the same time. The battery is charged
until batt-high. After charging to batt-high, if there is a
discharge trigger condition, it can be discharged. If there is
no discharge trigger condition, it will keep charging.
Batt High Volt
Maximum charge cut-off voltage. When the battery starts
charging from low to high, the battery will not be discharged
to supply power to the load.
Force Volt Set
This value is less than Batt low Volt ,default value is 10% ,
When the value is reached, the force charge will be
automatically activated, and the battery will be charged
according to the force charge current value until it reaches
Batt_low.
Figure 4.32 For lead acid batteries
For lead acid batteries, these are the following settings:
Floating Chg.Volt
Bulk chg. Volt
Three-stage charging: Float value constant voltage charging,
you can exit when you meet any charging needs.
Three-stage charging: from the beginning of charging to
charging to the Bulk voltage value (the time period is T),
the system keeps charging at this value for a duration of 10T,
after 10T, the voltage drops to the Float voltage value, and
the Float value is constant voltage charging.
You can exit when you meet any charging demand.
Display
Description
Batt under Volt
The lowest discharge voltage. In the case of off-grid, if the PV
does not drive the load, the PV+ battery has been placed in
Batt_under.After reaching under, if there is PV, the PV is
loaded enough, and the PV is loaded. If the PV is not enough
to load, an error will be reported. If there is no PV, the battery
will provide screen/communication, knowing that the cut-off
voltage of deep discharge is reached, and trigger the
mechanical deep discharge protection.
Batt over Volt
Temp Compensation
Protect the maximum charging voltage value.
When this value is reached, stop charging the battery.
Lead acid battery temp compensation logic, to compensate 1
degree every 72mv.
Figure 4.33 For lead acid batteries
The section has 7 parts:
1. Power Switch
2. Batt Line ZO
3. Mppt CV Mode
4. ISO Set
5. AC Input Type Set
6. On-Grid PV Gen.
7. No-Batt PV Gen.
8. Clear Energy
9. Restore Settings
4.6.3 Special Settings
This function is applicable by maintenance personnel only, wrong operation
will prevent the inverter from reaching maximum power.
4. Operation
4. Operation
.37.
.36.
