Preset-Speed Operation (Speeds In 7 Steps - Toshiba TOSVERT VF-FS1 Instruction Manual

Inverter overload
Time [sec]
4) Thermal memory selection
At the main power off, it is selectable whether retention of electric thermal calculation values or not.
5

5.13 Preset-speed operation (speeds in 7 steps)

• Function
A maximum of 7 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
60
0.25
0
105% 110%
Inverter overload protection characteristics
: Incase of not activated
The calculated value of the electric thermal is not memorized at power-off.
The calculated value of the electric thermal and the trip state can always be reset.
Don't reset the unit trip state continually, it may cause the motor and the unit failure.
: In case of activated
The calculated value of the electric thermal is memorized at power-off.
The trip state can always be reset but the calculated value of the electric thermal can not be reset.
- : Preset-speed operation frequencies 1-7
.
Function
Command mode selection
100% = inverter rated output current
Output current [%]
185%
Adjustment range
0: Terminal board
1: Operation panel
2: Serial communication
E-28
E6581381
* To protect the inverter, overload
trip or overcurrent trip activate in
a short period of time when
output current reaches 110% or
higher.
to the upper limit frequency
Setting value
0
⇒ See step 3) or section 5.3.
.