Startup Procedure and Test Run
4
4.9 Auto-Tuning
SIEPCYEUOQ2V01A Q2V Technical Manual 129
■ Precautions before Stationary Auto-Tuning
• Make sure that the motor magnetic brake is not open.
• Make sure that external force from the machine will not cause the motor to rotate.
WARNING! Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the motor is stopped. Do not
touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it can cause serious injury or death.
■ Automatically Set E2-02 [Mot Rated Slip] and E2-03 [Mot No-Load Current]
If T1-12 = 1 [Test Mode Selection = Yes] when selecting Stationary Auto-Tuning, the drive will automatically set
motor parameters E2-02 [Mot Rated Slip] and E2-03 [Mot No-Load Current] after Auto-Tuning is complete when
you use the motor for the first time in Drive Mode.
After Stationary Auto-Tuning is complete, use this procedure to do the operation in test mode:
1. Check the E2-02 and E2-03 values on the “Modified Parameters/Fault Log” screen or the “Parameters” screen.
2. Operate the motor in Drive Mode with these conditions:
• Make sure that you connect all wiring between the drive and motor
• Make sure that a mechanical brake on the motor shaft is not locked
• The maximum motor load must be 30% of the rated load.
• Keep a constant speed of 30% of E1-06 [Base Frequency] (default value = maximum frequency) or more
for 1 second or longer.
3. After the motor stops, examine the values of E2-02 and E2-03 again in the Verify Menu or Parameter Setting
Mode.
4. Make sure that the input data is correct.
When the settings in E2-02 and E2-03 are different than in step 1, the drive set the values automatically.
■ Precautions before Stationary Auto-Tuning for Line-to-Line Resistance and Stator
Resistance Auto-Tuning
In V/f control, when the motor cable is 50 meters (164 feet) or longer, do Stationary Auto-Tuning for Line-to-Line
Resistance.
WARNING! Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the motor is stopped. Do not
touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it can cause serious injury or death.
■ Precautions before Using Deceleration Rate Tuning and KEB Tuning
Before Deceleration Rate Tuning or KEB Tuning, check these items:
• Do not do Deceleration Rate Tuning if you use a braking resistor unit or a regenerative converter.
• Do Deceleration Rate Tuning and KEB Tuning with the load attached to the motor.
• Do not do Deceleration Rate Tuning or KEB Tuning for these applications:
In Deceleration Rate Tuning and KEB Tuning, the drive will automatically rotate the motor forward and
accelerate and decelerate the motor again and again.
– On a machine that does not let the motor rotate forward
– In applications with a small range of operation (trolleys and other such applications that can only move
linearly)
– In elevator applications
– Applications where sudden acceleration and sudden deceleration are not applicable.
• To do KEB Tuning with the external main circuit capacitors connected to the drive, set L3-26 [DC Bus
Capacitors Extension] then do KEB Tuning.
• Do not do KEB Tuning or Deceleration Rate Tuning if the drive is set to use H1-xx = 61 [MFDI Function
Select = Motor 2 Select]. Failure to obey can cause an ov [Overvoltage] fault.
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