1 to appropriately reduce under voltage protection (Page 70 / 112) Simphoenix E500 Series Universal Low-Power Inverter User Manual

Functional Details 61

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.

Fre频que率ncy

D减ece速lera时tion间tim调e ad整justment

DC voltage

直流电压

[ F 3[F.31.122]]

时Tim间e

Figure 6-16 Voltage Stall Protection during Deceleration

F3.13 Current amplitude limiting level

Setting range: 150 ~ 250(％)

This parameter specifies maximum current allowed to be output by the inverter,

which is expressed by the percentage of rated current of the inverter. No watter

what working status (acceleration, deceleration and steady running) the inverter

is at, when the inverter’s output current exceeds the value specified by this

parameter, the inverter will adjust the output frequency to control the current

within the specified range to avoid over current tripping.

E500 Series Universal Low-Power Inverter