Precautions Before Auto-Tuning - Omron Q2A Series Technical Manual

■
Deceleration Rate Tuning
Deceleration Rate Tuning automatically sets the deceleration rate to prevent an ov [Overvoltage] fault during
motor deceleration. Set C1-11 [Ac/Dec Switch Frequency] first to automatically set parameters C1-02 [Decel Time
1] (high speed range) and C1-08 [Decel Time 4] (low speed range).
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KEB Tuning
KEB Tuning automatically sets parameters used for the KEB Ride-Thru function and for the overvoltage
suppression function.
Control Tuning automatically sets the parameters in the following table to the best values.
Parameters Automatically Set
C1-02 [Decel Time 1]
C1-08 [Decel Time 4]
C1-09 [Fast Stop Time]
C5-01 [ASR PGain 1]
C5-17 [Motor Inertia]
C5-37 [M2 Inertia]
C5-18 [Inertia Ratio of Load]
C5-38 [M2 Inertia Ratio of load]
L2-06 [KEB Decel Time]
L3-24 [Acc@Rated Torque]
L3-25 [Load Inertia Ratio]
n5-02 [Mot Inertia Acceleration Time]
n5-03 [FF Control Gain]
*1 The drive automatically sets C1-08 [Decel Time 4] only when C1-11 [Ac/Dec Switch Frequency] ≠ 0.
*2 When L2-29 = 1 [KEB Method = Single KEB1 Ride-Thru], the drive will automatically adjust C1-09 [Fast Stop Time] and will not
adjust L2-06 [KEB Decel Time]. If the Fast Stop time must not change, do not do KEB Tuning.
*3 When L2-29 = 2, 3, or 4 [KEB Method = Single KEB2 Ride-Thru, System KEB1 Ride-Thru, or System KEB2 Ride-Thru], the drive
will automatically adjust L2-06 [KEB Decel Time].
◆

Precautions before Auto-Tuning

Examine the topics in this section before you start Auto-Tuning.
■
Prepare for Basic Auto-Tuning
• You must input data from the motor nameplate or motor test report to do Auto-Tuning. Make sure that this data
is available before Auto-Tuning the drive.
• For best performance, make sure that the drive input supply voltage is equal to or more than the motor rated
voltage.
Note:
Better performance is possible when you use a motor with a base voltage that is less than the input supply voltage (40 V for 400 V class
models). This is very important when operating the motor at more than 90% of base speed, where high torque precision is necessary. If
the input power supply is equal to the motor rated voltage, the drive output voltage will not be sufficient, and performance will decrease.
• Push
on the keypad to cancel Auto-Tuning.
• If a Safe Disable input signal is input to the drive during Auto-Tuning, Auto-Tuning measurements will not
complete successfully. If this occurs, cancel the Auto-Tuning, then do it again.
• The following table gives information about the terminal operations of digital inputs and outputs during Auto-
Tuning.
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Table 4.15 Parameters set in Control Tuning
Inertia Tuning ASR (Speed Regulator)
-
-
-
-
×
×
×
×
-
×
×
×
×
Dec Rate Tuning
- ×
*1
- ×
- -
× -
× -
× -
× -
× -
- -
× -
× -
× -
× -
4.6 Auto-Tuning
KEB Tuning
-
-
*2
×
-
-
-
-
-
*3
×
-
×
-
-
4
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