E6582175
F-88
6
6.25 Setting motor constants
6.25.1 Setting motor constants for induction motors
f400 : Auto-tuning
f416 : Motor no-load current
f401 : Slip frequency gain f417 : Motor rated speed
f402 : Automatic torque boost value f459 : Load inertia moment ratio
f405 : Motor rated capacity f462 : Speed reference filter
f415 : Motor rated current coefficient
To use vector control, automatic torque boost and automatic energy saving, motor constant setting (motor tuning)
is required. The following three methods are available to set motor constants.
1) Using the torque boost setting macro function (au2) for setting the V/F control mode selection (pt) and
auto-tuning (f400=2) collectively
2) Setting V/F control mode selection (pt) and auto-tuning (f400) independently
3) Combining the V/F control mode selection (pt) and manual tuning
Caution:
If the settings for V/F control mode selections pt are 2: automatic torque boost control, 3: vector control,
4: energy-saving, and 5: Dynamic energy-saving, make sure to confirm the motor's name plate and set the
following parameters;
vl: Base frequency 1 (rated frequency)
vlv: Base frequency voltage 1 (rated voltage)
f405: Motor rated capacity
f415: Motor rated current
f417: Motor rated speed
Set the other motor constants as necessary.
[Selection 1: Setting by parameter setting macro torque boost]
This is the easiest among the available methods. It conducts vector control and auto-tuning at the same time.
Be sure to set the motor for vl, vlv, f405, f415, f417 .
Set au2 to 1 (Automatic torque boost + auto-tuning)
Set au2 to 2 (Vector control + auto-tuning)
Set au2 to 3 (Energy-saving + auto-tuning)
Refer to section 6.1.5 for details of the setting method.
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