Preset-Speed Operation (Speed In 15 Steps - Toshiba TOSVERT VF-S9 Instruction Manual

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 (
stall operation level
5
5.15 Preset-speed operation (speeds in 15 steps)
• 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
[Setting method]
1) Run/stop
The starting and stopping control is done from the terminal board.
Title
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
downward or increasing the acceleration time
Inverter overload
Time [s]
* 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
∼
: Preset-speed operation frequencies 1~7
~ : Same as Sr1 ~ Sr7
∼
: Preset-speed operation frequencies 8~15
.
Function
Command mode selection
) is activated frequently, this can be improved by adjusting the
100%: inverter rated output current
Adjustment range
0: Terminal board
1: Operation panel
E-22
E6580757
or deceleration time
Output current [%]
to the upper limit frequency
Setting
1
⇒ See 3) or 5.5
.
.