12.3 C: TUNING
570 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Note:
• If STPo [Motor Step-Out Detected] occurs when starting a PM motor, try increasing the value set to C2-01.
• Setting the S-curve will increase the acceleration and deceleration times.
■ C2-01 Jerk@Start of Accel
No.
(Hex.)
Name Description
Default
(Range)
C2-01
(020B)
Jerk@Start of Accel
Sets the jerk acceleration time at start.
Determined by A1-02
(0.00 - 10.00 s)
■ C2-02 Jerk@End of Accel
No.
(Hex.)
Name Description
Default
(Range)
C2-02
(020C)
Jerk@End of Accel
Sets the jerk acceleration time at completion.
0.20 s
(0.00 - 10.00 s)
■ C2-03 Jerk@Start of Decel
No.
(Hex.)
Name Description
Default
(Range)
C2-03
(020D)
Jerk@Start of Decel
Sets the jerk deceleration time at start.
0.20 s
(0.00 - 10.00 s)
■ C2-04 Jerk@End of Decel
No.
(Hex.)
Name Description
Default
(Range)
C2-04
(020E)
Jerk@End of Decel
Sets the jerk deceleration time at completion.
0.00 s
(0.00 - 10.00 s)
◆ C3: SLIP COMPENSATION
The Slip Compensation function improves the speed accuracy of an induction motor. As loads on induction
motors increase, motor slip increases and motor speed decreases. By adjusting the output frequency in accordance
with the motor load, it compensates the slip and makes the motor speed equal to the frequency reference.
■ C3-01 Slip Comp Gain
No.
(Hex.)
Name Description
Default
(Range)
C3-01
(020F)
RUN
Slip Comp Gain
Sets the gain for the slip compensation function. Usually it is not necessary to change this setting.
Determined by A1-02
(0.0 - 2.5)
Note:
• Correctly set these parameters before changing the slip compensation gain:
–E2-01 [Mot Rated Current (FLA)]
–E2-02 [Mot Rated Slip] (Set during Auto-Tuning when A1-02 = 2 [Control Method = OLVector])
–E2-03 [Mot No-Load Current]
• When A1-02 = 3 [CLVector], the slip compensation gain becomes the motor temperature compensation gain. When the motor
temperature increases, the motor internal constant changes and increases the slip. When you set this parameter, the drive adjusts the slip
with the increase in temperature. Adjust the parameter in these conditions. When the setting value increases, the compensation also
increases:
–The drive is doing torque control.
–There are torque limits.
–Output torque changes when the temperature changes.
It can be necessary to adjust the parameter in these conditions:
• If the motor speed is slower than the frequency reference, increase this parameter by 0.1.
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