C3: Slip Compensation - Omron Q2A Series Technical Manual

12.3 C: TUNING
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.
Name
(Hex.)
C2-01 Jerk@Start of Accel
(020B)
■
C2-02 Jerk@End of Accel
No.
Name
(Hex.)
C2-02 Jerk@End of Accel
(020C)
■
C2-03 Jerk@Start of Decel
No.
Name
(Hex.)
C2-03 Jerk@Start of Decel
(020D)
■
C2-04 Jerk@End of Decel
No.
Name
(Hex.)
C2-04 Jerk@End of Decel
(020E)
◆

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.
Name
(Hex.)
C3-01 Slip Comp Gain
(020F)
RUN
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.
570
V/f CL-V/f OLV CLV AOLV
Sets the jerk acceleration time at start.
V/f CL-V/f OLV CLV AOLV
Sets the jerk acceleration time at completion.
V/f CL-V/f OLV CLV AOLV
Sets the jerk deceleration time at start.
V/f CL-V/f OLV CLV AOLV
Sets the jerk deceleration time at completion.
V/f CL-V/f OLV CLV AOLV
Sets the gain for the slip compensation function. Usually it is not necessary to change this setting.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Default
(Range)
Determined by A1-02
(0.00 - 10.00 s)
Default
(Range)
0.20 s
(0.00 - 10.00 s)
Default
(Range)
0.20 s
(0.00 - 10.00 s)
Default
(Range)
0.00 s
(0.00 - 10.00 s)
Default
(Range)
Determined by A1-02
(0.0 - 2.5)