Slip frequency gain

Function
To select vector control, automatic torque boost, or automatic energy-saving with [Pt: V/f Pattern], you must set motor parameters (auto-tuning).
There are four setting methods.
• Use [AU2: Torque boost macro] to set both [Pt] and [F400: Offline auto-tuning].
• Set [Pt] and [F400] individually.
• Set [Pt] and [F400] individually. Perform an auto-tuning after calculating the motor parameter automatically (available with motor not connected).
• Set [Pt] and set the motor parameter manually.


Setting method 2: Set auto-tuning
Set vector control/automatic torque boost/automatic energy-saving and auto-tuning individually.
First, set [Pt: V/f Pattern].
Next, perform offline auto-tuning.


Selecting auto-tuning setting
1: Reset motor parameters (0 after execution)
Set motor parameters [F402: Automatic torque boost], [F412: Leakage inductance], and [F416: Motor no load current] to default setting values (same motor parameter values as a 4 pole general purpose motor with same capacity as the inverter).

2: Auto-tuning at run command (0 after execution)
Perform auto-tuning when the motor starts for the first time after settings are made and automatically set [F402: Automatic torque boost] and [F412: Leakage inductance] while considering the motor wiring.

3: Auto-tuning at TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
When the assigned input terminal is ON, make an auto-tuning and automatically set [F402: Automatic torque boost] and [F412: Leakage inductance].
This setting allows auto-tuning while the motor is stopped; use this function when the motor cannot run following the auto-tuning due to some reason related to the operation of the machinery.
However, if standby signal is OFF, this function will not be enabled.
To make an auto-tuning again, tern input terminal off once, then turn on again.

6: Auto-tuning at run command during TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
When the assigned input terminal is ON, always make an auto-tuning and automatically set [F402: Automatic torque boost] and [F412: Leakage inductance] at startup.

7: Auto-tuning F402 only at run command during TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
Always make an auto-tuning at startup when the motor starts for the first time after the assigned input terminal is ON and set [F402: Automatic torque boost] only.

3) Cautions during offline auto-tuning
• Offline auto-tuning must be performed with the motor connected but in a completely stopped state. Due to residual voltage, tuning may not be properly executed immediately after running motor is stopped.
• There would be almost no rotation of the motor during offline auto-tuning, but you must keep in mind that voltage is still applied during this time.
• During auto-offline tuning, "Atn" will be displayed on the LCD screen.
• Offline auto-tuning takes a few seconds. If any failure is found, tripping will occur with autotuning error "Etn1" or "Etn2", and motor parameters will not be set.
• Offline auto-tuning cannot be performed on special motors such as a high-speed motor or high-slip motor. Calculate the motor parameters using "Setting method 3".
• If offline auto-tuning cannot be executed or auto-tuning error "Etn1" or "Etn2" occurs, perform manual setting using "Setting method 4".

Selecting auto-tuning setting
1: Reset motor parameters (0 after execution)
Set motor parameters [F402: Automatic torque boost], [F412: Leakage inductance], and [F416: Motor no load current] to default setting values (same motor parameter values as a 4 pole general purpose motor with same capacity as the inverter).

2: Auto-tuning at run command (0

Please reference latest AS3 Instruction Manual more details or latest information.

AS3 fault codes, descriptions, symptoms and suggested remedies can be found in the below links. Each fault code can also be linked to directly from the AS3 by accessing the QR code on a mobile device while the AS3 is currently experiencing the fault.