E6581158
E-26
5
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 (QN) from being activated too easily, lower the stall preven-
tion level (H) or increase the acceleration time (CEE) or deceleration time (FGE).
110% 150%
Output current [%]
Time [sec]
60
Inverter overload
0
100% = inverter rated output current
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.
5.14 Preset-speed operation (speeds in 15 steps)
UT - UT : Preset-speed operation frequencies 1-7
H
- H : 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 NN to the upper limit frequency
WN.
When fire-speed control is assigned to the terminal board, the function of setting fire-speed operation frequencies
is assigned to H.
See 6.11.2, "Fire-speed control.
[Setting method]
1) Run/stop
The starting and stopping control is done from the terminal board.
Title Function Adjustment range Setting value
EOQF Command mode selection
0: Terminal board
1: Operation panel
0
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 HOQF. ⇒ See 3) or 5.4
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