BENSHAW RSi H2 Series - Page 138

Parameter Descriptions
126
890053-00-02
Auto Tuning Parameter Setting Details
Code
Description
MOT-01 ~
MOT-08
Enter motor parameters prior to performing Auto Tuning.
MOT-11
Auto Tuning
Select one of the auto tuning options and then press the [ENT] button to run the auto
tuning. After Auto Tuning is complete, the parameter value will return to ‘0’.
Setting
Function
0
None
Auto tuning function is not enabled.
1
All (rotating
type)
Measures motor parameters during rotation. These include MOT-
12 ~ MOT-15 (stator resistance (Rs), leakage inductance
(Lsigma), stator inductance (Ls), and rotor time constant (Tr). If
the load is connected to the motor, the parameters may not be
measured accurately. For accurate measurements, remove the
load attached to the motor. However, note that the rotor time
constant (Tr) will be measured in a stopped position.
2
All (static
type)
Measures all parameters while the motor is in the stopped
position. These include MOT-12 ~ MOT-15 (stator resistance
(Rs), leakage inductance (Lsigma), stator inductance (Ls),), rotor
time constant (Tr). The measurements are not affected when the
load is connected to the motor. However, do not rotate the motor
from the load side.
3
Rs+Lsigma
(rotating
type)
Measures parameters while the motor is rotating. The measured
motor parameters are used for auto torque boost or sensorless
vector control.
4
Tr (static
type)
Measures the rotor time constant (Tr) with the motor in the
stopped position and Control Mode (DRV-09) is set to IM
Sensorless
6
All PM*
*230V/460V
only, not
applicable to
575V motors
When DRV-09 (Control Mode) is set to 4 (PM Sensorless), the motor
parameters are measured in the stopped position. Check the motor’s
nameplate for motor specifications, such as the base frequency (MOT-
02), motor rated voltage (MOT-07), pole number (MOT-03). Then,
perform auto tuning by setting MOT-11 to 4 [All (PM)]. The auto tuning
operation will configure parameters MOT-16 ~ MOT-19 (Rs PM, Ld
PM, Lq PM, and PM Flux Ref).
MOT-12~15
(IM)
MOT-16~22
(PM)
Displays motor parameters measured by auto tuning. For parameters that are not included
in the auto tuning measurement list, the default setting will be displayed.
Perform auto tuning ONLY after the motor has completely stopped running.
Before you run auto tuning, enter the motor pole number, rated slip, rated current, rated
voltage and efficiency from the motor’s name plate. The default parameter setting is
used for values that are not entered.
Parameter values measured with static auto tuning may be less accurate compared with
rotation type auto tuning where parameters are measured while the motor is rotating.
Inaccuracy of the measured parameters may degrade the performance of sensorless
operation. Therefore, only run static type auto tuning when the motor cannot be rotated
(when gearing and belts cannot be separated easily, or when the motor cannot be
separated mechanically from the load).
In PM synchronous motor sensorless control mode before performing auto tuning enter the
motor’s name plate and other the motor specifications, such as the base frequency,
pole number, rated current and voltage, and efficiency, as the detected parameter
values may not be accurate if the motor’s base specifications are not entered.