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
