Functional Descriptions (By Parameter No.)

Used to set the motor constants required for vector control with data values.

(Voltage compensation constant setting : parameter No. 69)

Data setting range (V)

0.01 to 99.99 (can be set in 0.01 units)

Calculate the constants with the following method, and set the results as the data.

Setting value = R x I

R : Resistance value of one phase including wiring impedance. (1/2 of resistance value measured between motor terminals) I : (equivalent current) Inverter rated current equivalent to motor capacity

Motor capacity (kW)	20V type	400V type		Motor capacity (kW)	200V type	400V type
0.2	2.3	--------		1.5	8	4.0
0.4	3	--------		2.2	11	6.0
0.75	5	2.1		3.7	17.5	9.4

Note) If the set value is not adequate :

If the set value is too large : an overcurrent trip may occur.

If the set value is too low : the torque may be insufficient at low speeds.

(Slip compensation frequency setting : parameter No. 70)

The slip compensation frequency is set as value obtained by converting the slip during 60Hz operation into a frequency. Calculate the frequency using the following method, and set the results as the data.

(Set value) = NO - N1 x 60 (Hz) NO : 120 x 60

NO No. of motor poles

N1 : Motor rated speed (at 60Hz)

Note) If the set value is not adequate :

• If the set value is large : the motor speed will be faster than the target
• If the set value is low : the motor speed will be slower than the target.

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