10
■
Modified Parameters
The parameters which have been modified and changed since the startup of the panel are shown in
this menu. If the driver turns off or the panel resets, the list will be cleared.
Auto-Tuning
The drive offers Auto-Tuning for induction motors. The type of Auto-Tuning used differs further
based on the control mode and other operating conditions.
Note:
The drive will only show Auto-Tuning parameters that are valid for the control mode which has
been set in A1-02.
■
Auto-Tuning for Induction Motors
This feature automatically sets the motor parameters E1-
**
and E2-
**
for an induction motor.
Table 1.2 Types of Auto-Tuning for Induction Motors
Type
Setting
Requirements and Benefits
V/f (0)
OL(2)
CLV (3)
CLVPM (7)
Stationary Auto-
tuning
T1-01=3
• Automatically calculates motor parameters needed
for open-loop and V/f control.
Yes
Yes
Yes
No
Encoder Offset
Calculation
T1-01=10
Automatically calculates Encoder offset.
No
No
No
Yes
Table 1.3
lists the data that must be entered for Auto-Tuning. Make sure this data is available before
starting Auto-Tuning. The necessary information is usually listed on the motor nameplate or in the
motor test report provided by the motor manufacturer.
Table 1.3 Auto-Tuning Input Data
Input Value
Input
Parameter
Unit
Tuning Type (T1-01)
3
Stationary
10
Encoder offset calculation
Motor Rated Power
T1-02
kW
Yes
Yes
Motor Rated Voltage
T1-03
Vac
Yes
Yes
Motor Rated Current
T1-04
A
Yes
Yes
Motor Rated Frequency
T1-05
Hz
Yes
Yes
Number of Motor Poles
T1-06
-
Yes
Yes
Motor Rated Speed
T1-07
rpm
Yes
Yes
Encoder resolution
T1-08
PPR
No
Yes
■
Basic Auto-Tuning Preparations and Precautions
WARNING!
Electrical Shock Hazard. Do not touch the motor during Auto-Tuning. Lethal
voltages may be present on the motor case. Failure to comply may result in serious injury from
electrical shock.
WARNING!
Electrical Shock Hazard. When executing Stationary Auto-Tuning for motor data,
the motor does not rotate, however, power is applied. Do not touch the motor until Auto-Tuning
is completed. Failure to comply may result in death or serious injury from electrical shock.
Note:
In the automatic calculation of encoder offset, although the test is in static mode, the
mechanical brake must be in open condition and if the motor is connected to a load, it must be
adjusted to be balanced on both sides. ( Do not move to the desired position by opening the brakes )
•
When using a motor contactor, make sure it remains closed during the Auto-Tuning process.
•
Ensure Base_Block signal is ON when performing Auto-Tuning.
•
Ensure the motor is securely mounted and bolted in place prior to Auto-Tuning.
•
To cancel Auto-Tuning, press the STOP key on the digital operator.
