Functional Details 54
F3.09 Parameter inquiry and modification authority Setting range: 0 ~ 9999
This parameter is the check code for obtaining authority of inquiring and modifying
some internal parameters.
F3.10 Parameter initialization
Setting range: 0 ~ 9
It is used to change inverter’s parameters into default value.
0: No action
1: Standard initialization: (All parameters in F0~F6 except F0.00, F0.02,
F0.05, F0.06, F0.08, F0.11, F0.13 and F3.14 are restored to the default settings)
2: Clearing fault records
3: Complete initialization: (all parameters in F0~F6 group except for F3.14
is restored to default settings and fault records are cleared).
F3.11 Under voltage protection level Setting range: 180 ~230V/360 ~460V
This parameter specifies allowable lower limiting voltage at the DC side when the
inverter works normally. For some occasions with low grid, it is applicable to
appropriately reduce under voltage protection level so as to ensure normal operation
of the inverter.
Note: when the grid voltage is too low, the motor’s output torque will reduce. For
occasions with constant power load and constant torque load, excessive low grid
voltage will cause incease of inverter input current, hence leading to reduction of
inverter operation reliablity.
F3.12 Overvoltage limiting action level Setting range: 350 ~400V/700 ~800V
This parameter specifies the threshold value of voltage stall protection during motor
decelration. When the pumping voltage at the internal DC side of the Inverter
caused by deceleration has exceeded this value, the decerlation time will be
automatically prolonged. See figure 6-16.
E550 Series Universal Low-Power Inverter
