12.3 C: TUNING
580 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
■ C5-03 ASR PGain 2
No.
(Hex.)
Name Description
Default
(Range)
C5-03
(021D)
RUN
ASR PGain 2
Sets the gain to adjust ASR response.
Determined by A1-02
(0.00 - 300.00)
The speed response increases as the weight of the load increases. Usually, the gain increases with larger loads.
Too much gain will cause vibration.
■ C5-04 ASR ITime 2
No.
(Hex.)
Name Description
Default
(Range)
C5-04
(021E)
RUN
ASR ITime 2
Sets the ASR integral time.
Determined by A1-02
(0.000 - 60.000 s)
An integral time that is too long will decrease the responsiveness of the speed control and decrease drive response
to dynamic changes in motor load. An integral time that is too short can cause oscillation.
■ C5-05 ASR Limit
No.
(Hex.)
Name Description
Default
(Range)
C5-05
(021F)
ASR Limit
Sets the ASR output limit as a percentage of E1-04 [Max Output Frequency].
5.0%
(0.0 - 20.0%)
If the motor rated slip is high, it could be necessary to increase the setting to provide correct motor speed control.
Use U6-04 [ASR Output] to make sure that ASR is operating at the limit set in this parameter. When ASR is
operating at the limit, correctly set the PG signal and these parameters before you make changes to C5-05:
• F1-01 [Enc1 Pulse Count (PPR)]
• F1-12 [Enc1 Gear Teeth1]
• F1-13 [Enc1 Gear Teeth2]
■ C5-06 ASR Delay Time
No.
(Hex.)
Name Description
Default
(Range)
C5-06
(0220)
ASR Delay Time
Sets the filter time constant for the time from the speed loop to the torque command output.
Usually it is not necessary to change this setting.
Determined by A1-02
(0.000 - 0.500 s)
If you have a load with low rigidity or if oscillation is a problem, increase this setting in 0.01 unit increments.
■ C5-07 ASR Gain Switch Frequency
No.
(Hex.)
Name Description
Default
(Range)
C5-07
(0221)
ASR Gain Switch
Frequency
Sets the frequency where the drive will switch between these parameters:
C5-01 and C5-03 [ASR PGain 1 and ASR PGain 2]
C5-02 and C5-04 [ASR ITime 1 and ASR ITime 2]
Determined by A1-02
(Determined by A1-02)
Switching the proportional gain and integral time in the low or high speed range can help operation become
stable. A good switching point is 80% of the frequency where oscillation occurs or at 80% of the maximum output
frequency.
Note:
An MFDI set for H1-xx = 45 [MFDI Function Select = ASR Gain Switch] will have priority over the ASR gain switching frequency.
■ C5-08 ASR Integral Limit
No.
(Hex.)
Name Description
Default
(Range)
C5-08
(0222)
ASR Integral Limit
Sets the upper limit for ASR as a percentage of the rated load.
400%
(0 - 400%)
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