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E6580757
E-22
5
2) Inverter over load characteristics
Set to protect the inverter unit. Cannot be changed or turned off by parameter setting.
If the inverter overload trip function ( ) is activated frequently, this can be improved by adjusting the
stall operation level downward or increasing the acceleration time or deceleration time .
Inverter overload
Time [s]
100%: inverter rated output current
Output current [%]
* To protect the inverter, overload trip may activate in a short period of time when output
current reaches 150% or higher.
Inverter overload protection characteristics
5.15 Preset-speed operation (speeds in 15 steps)
∼ : Preset-speed operation frequencies 1~7
~ : Same as Sr1 ~ Sr7
∼ : Preset-speed operation frequencies 8~15
• Function
A maximum of 15 speed steps can be selected just by switching an external contact signal. Multi-speed
frequencies can be programmed anywhere from the lower limit frequency to the upper limit frequency
.
[Setting method]
1) Run/stop
The starting and stopping control is done from the terminal board.
Title Function Adjustment range Setting
Command mode selection
0: Terminal board
1: Operation panel
1
Note:If speed commands (analog signal or digital input) are switched in line with preset-speed operations, select
the terminal board using the frequency setting mode selection . ⇒ See 3) or 5.5