Preset-Speed Operation (Speeds In 15 Steps - Toshiba TOSVERT VF-S11 Instruction Manual

2) Inverter over load characteristics
Set to protect the inverter unit. Cannot be changed or turned off by parameter setting.
To prevent the inverter overload trip function (
tion level (
5

5.14 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
When fire-speed control is assigned to the terminal board, the function of setting fire-speed operation frequencies
is assigned to
See 6.11.2, "Fire-speed control.
[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
) or increase the acceleration time (
Inverter overload
Time [sec]
60
0
Inverter overload protection characteristics
* To protect the inverter, overload trip activates in a short period of time when output cur-
rent reaches 150% or higher.
- : Preset-speed operation frequencies 1-7
- : Preset-speed operation frequencies 8-15
.
.
Function
Command mode selection
) from being activated too easily, lower the stall preven-
) or deceleration time (
100% = inverter rated output current
110% 150%
Adjustment range
0: Terminal board
1: Operation panel
E-26
E6581158
).
Output current [%]
to the upper limit frequency
Setting value
0
. See 3) or 5.4