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5.2 Increasing the starting torque (Pr. 0)
Set this parameter when "the motor with a load will not rotate", "an alarm [OL] is output, resulting in an inverter
trip due to [OC1], etc.
Parameter
Name
Number
0
Torque boost
Changing example
When the motor with a load will not rotate,
increase the Pr. 0 value 1% by 1% unit by
looking at the motor movement. (The guideline
is for about 10% change at the greatest.)
1.
Screen at power-ON
The monitor display appears.

2.Operation mode setting

Press
to choose the PU operation mode.
3.
Press
to choose the parameter
setting mode.
4.
5.
Press
to read the present set value.
"
"(initial value is 6% for the 0.75K)
appears.
6.
Turn
to change it to the set value
"
".
7.
Press
to set.
REMARKS
· Setting Pr.0 too high may cause the motor to overheat, resulting in an overcurrent trip (OL (overcurrent alarm) then E.OC1
(Overcurrent trip during acceleration)), thermal trip (E.THM (Motor overload trip), and E.THT (Inverter overload trip)).
When a fault (E.OC1) occurs, release the start command, and decrease the Pr. 0 value 1% by 1% to reset. (Refer to page 122.)
POINT
If the inverter still does not operate properly after taking the above measures, set Pr. 80 Motor capacity and select the
Simple magnetic flux vector control [extended mode]. (Refer to Chapter 4 of
Initial Value
0.75K
1.5K to 3.7K
5.5K, 7.5K
11K to 37K
45K, 55K
75K or higher
Operation
Pr. 0) appears.
· By turning
, you can read another parameter.
· Press
to show the setting again.
· Press
twice to show the next parameter.
Increasing the starting torque (Pr. 0)
V/F
V/F
V/F
Setting
Range
6%
4%
3%
0 to 30%
2%
1.5%
1%
100%
Output
voltage
Pr.0
Setting
Pr.46
range
Display
PU indicator is lit.
The parameter
number read
previously appears.
Flicker ··· Parameter setting complete!!
the Instruction Manual (Applied).)
<V/F>
< V / F >
Description
Motor torque in the low-
frequency range can be
adjusted to the load to increase
the starting motor torque.
Output
0
Base
frequency
frequency
(Hz)
The initial value
differs according
to the capacity.
5
73

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   Also See for Mitsubishi Electric FR-F720P-0.75K

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