Parameter Function Details; Torque Boost (Pr. 0, Pr. 46) - Mitsubishi Electric FR-F500 Instruction Manual

4.2 Parameter Function Details

4.2.1 Torque boost (Pr. 0, Pr. 46)

Pr. 0 "torque boost"
Pr. 46 "second torque boost"
You can compensate for a voltage drop in the low frequency
range to improve motor torque reduction in the low speed range.
Motor torque in the low-frequency range can be adjusted to the load to increase the starting motor torque.
You can select any of the starting torque boosts by terminal switching.
Parameter Factory
Number Setting
0 1%
46 9999
<Setting>
Assuming that the base frequency voltage is 100%, set the 0Hz voltage in %.
Pr. 46 is valid when the RT signal is on.
Note: 1. Increase the setting when the inverter-to-motor distance is long or motor torque in the low-speed
range is insufficient, for example. A too large setting may result in an overcurrent trip.
2. When the RT signal is on, the other second functions such as second acceleration/deceleration
time are also selected.
3. When terminal assignment is changed using Pr. 180 to Pr. 186 during use of the second functions,
the other functions may be affected. Check the functions of the corresponding terminals before
making setting.
Setting Range Remarks

0 to 30%
0 to 30%, 9999 9999: Function invalid
Related parameters
Pr. 3 "base frequency"
Pr. 19 "base frequency voltage"
Pr. 71 "applied motor"
Pr. 180 to Pr. 186
(input terminal function selection)
100%
Pr.0 Setting
range
Pr.46
61
PARAMETERS
0 Output Base frequency
frequency (Hz)