Nidec D3-0023-B, Руководство пользователя

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Digistart D3: User Guide
Issue: G
Adaptive Control
To use Adaptive Control to control starting performance:
1. Select Adaptive Control from the Start Mode menu (Pr 2A)
2. Set the desired Start Ramp Time (Pr 2D )
3. Select the desired Adaptive Start Profile (Pr 2E)
4. Set a start Current Limit (Pr 2B) sufficiently high to allow a successful start. The first Adaptive Control start will be
a Constant Current start. This allows the Digistart D3 to learn the characteristics of the connected motor. This
motor data is used by the Digistart D3 during subsequent Adaptive Control starts.
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Adaptive Start Profile (Pr 2E):
1. Early Acceleration
2. Constant Acceleration
3. Late Acceleration
4.
Start Ramp Time
(Pr 2D)
Time
NOTE
Adaptive Control will control the load according to the programmed profile. Start current will vary according
to the selected acceleration profile and the programmed start time.
If replacing a motor connected to a Digistart D3 programmed for Adaptive Control starting or stopping, or if
the starter has been tested on a different motor prior to actual installation, the starter will need to learn the
characteristics of the new motor. The Digistart D3 will automatically re-learn the motor's characteristics if
Pr 1A Motor Full Load Current or Pr 2L Adaptive Control Gain is changed.
How to Select the Adaptive Control Start Profile
The best profile will depend on the exact details of each application.
Some loads, such as submersible pumps, should not be run at slow speeds. An early acceleration profile will raise
the speed quickly, then control acceleration through the rest of the start.
CAUTION
Adaptive Control controls the motor's speed profile, within the programmed time limit. This may result in a
higher level of current than traditional control methods.
Fine-tuning Adaptive Control
If the motor does not start or stop smoothly, adjust the adaptive control gain (Pr 2L). The gain setting determines how
much the Digistart D3 will adjust future adaptive control starts and stops, based on information from the previous
start. The gain setting affects both starting and stopping performance.
• If the motor accelerates or decelerates too quickly at the end of a start or stop, increase the gain setting by
5%~10%.
• If the motor speed fluctuates during starting or stopping, decrease the gain setting slightly.
NOTE
Changing the gain setting resets the starter's adaptive control learning. The first start after changing the
gain will use constant current.