6-2
This chapter provides information on the use of advanced functions of the
Inverter for operation.
Refer to this chapter to use the various advanced functions, such as pre-
cise vector control setting, energy-saving control, PID control, carrier fre-
quency setting, DC injection braking, stall prevention, overtorque detec-
tion, torque compensation, and slip compensation.
6-1 Precise Vector Control Settings and Adjustments
6-1-1 Precise Vector Control Settings
·Inadditiontothesettingsdescribedin5-2 Operation in Vector Control,checkthemotor
test report and precise motor constants and make the following settings in order to
make full use of the Inverter in vector control.
H Setting the Motor Phase to neutral Resistance (n107)
·Set this parameter to 1/2 of the phase-to-phase resistance of the motor, or phase to
neutral resistance at 50°C.
·Obtain from the manufacturer of each motor the test report of the motor or equivalent
datasheetincludingprecisespecificationsofthemotor.Usethetheapplicableformula
fromthoselistedin the following and calculate thephaseto neutralresistance at 50°C
from the insulation classand phase-to-phase resistance ofthe motor describedinthe
test report.
Insulation class E: Phase-to-phase resistance at 75°C (W) x 0.92 x 1/2
Insulation class B: Phase-to-phase resistance at 75°C (W) x 0.92 x 1/2
Insulation class F: Phase-to-phase resistance at 115°C (W) x 0.87 x 1/2
n107 Motor Phase to neutral
Resistance
Register 016B
Hex
Changes during
operation
No
Setting
range
0.000 to 65.50 (W) Unit of
setting
See note
1
Default setting See
note 2
Note 1. The value will be set in 0.001-W increments if the resistance is less than 10 W
and 0.01-W increments if the resistance is 10 W or over.
Note 2. The default setting for this parameter is the standard phase to neutral resis-
tance of the maximum applicable motor.
H Setting the Motor Leakage Inductance (n108)
·Set the motor leakage inductance in 1-mH increments.
·Motorleakageinductanceisamagneticfieldthatisleaking externallyorconsumedas
core loss, and is not used for torque generation.
Advanced Operation Chapter 6