Parameter Description
Parameters
56
5.1 Torque Boost (P.0, P.46)
P.0 “Torque boost”
P.46 “The second torque boost”
Related parameters
P. 19
“
Base frequency voltage
”
P. 80~P. 84 , P. 86, P.126, P.550
“
Multi-function terminals selection
”
P.3
“
Base frequency
”
P. 47
“
The second base frequency
”
● For an inverter controlled by V/F mode, when the motor starts up, the starting torque is
usually inadequate since the output voltage of the inverter is inadequate. In this case, the
output voltage can be elevated by properly setting the torque boost (P.0), and thus a better
starting torque can be acquired.
Parameter
Factory setting
Setting range
Remarks
0
4%(3.7kW or below)
0~30%
---
3% (5.5KW~7.5kW)
2%(11kW~55kW)
1%(75kW or above)
46
99999
0~30%, 99999
99999
：
Function invalid
the set value
of P.0
、
P.46
Output
voltage
Base
frequency
Output frequency
100
％
<Setting>
• If P.0=6% and P.19=220V, and when output frequency of the inverter is 0.2Hz, the output
voltage is:
V
Hz
Hz
V
P
f
P
P
P
03
.
14
%
6
2
.
0
50
%
6
%
100
220
0
.
3
.
0
.
%
100
19
.
=
+
×
−
×
=
+
×
−
×
• If RT is “on,” “The Second Torque Boost” on P.46 is valid (Note 2).
Note: 1. If the set value of P.0 is too high, it will activate current inverter protection or the activation will be
impeded.
2. The second function is valid on when P.44
≠99999.
3. RT mentioned in this section is the function name of the “multi-function control terminal”. Please
refer to P.80~P.84
P.550 for function selection and purposes of the multi-function
control terminal. For related wiring, please refer to Section 3.5.
