LS ELECTRIC SV-iS7 Series, User Manual

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Learning Advanced Features
232
Code Description
Appropriate controller gain values must be set based on the load
characteristics. Motor overheating or an unstable system may result if
the gain values are not properly set.
DRV-10 Torque Control
Selects the speed control and torque control modes. If you set DRV-10
(Torque control) to
“ 1 (Yes) ”, the operation switches into torque control
mode. Refer to 8.14 Torque Control on page 242 for details.
• Torque control is not available during low-speed regeneration and
low-speed operation under a light load. Select vector control
mode instead.
• When the inverter is operated in torque control mode, do not
switch between forward and reverse rotations. Overcurrent or Rx
deceleration fault trips may result.
• When the inverter is operated in sensorless vector control mode,
enable accelerating speed search by setting the CON-71 (Speed
search) bits to
“ 0001 ” if the inverter is expected to start or restart
while the motor is free-running.
8.12 Sensorless-2 Vector Control
Similar to sensorless-1 vector control mode, sensorless-2 vector control mode provides high-
performance inverter operation without requiring a speed sensor. It utilizes various gain values
for more precise vector control.
Motor parameter information is required for sensorless-2 vector control mode. Before
operating the inverter in sensorless-2 mode, run auto tuning first.
Group Code Name LCD Display Parameter Setting Unit
DRV
09 Control mode Control Mode 4 Sensorless-2 -
10 Torque control option Torque Control 0 No -
14 Motor-rated capacity Motor Capacity x
Varies depending on
motor capacity.
kW
BAS 11 Motor pole number Pole Number - 4 -