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Product Manual escostart DS3 31
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How to Select the Adaptive Acceleration Control Start Profile
Product Manual escostart DS3 31
4
Adaptive start profile (parameter 2K):
1. Early acceleration
2. Constant acceleration
3. Late acceleration
4. Start ramp time (parameter 2D)
The best profile will depend on the exact details of each application. If you have particular operational
requirements, discuss details of your application with your local supplier.
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.
NOTE
AAC Adaptive Acceleration 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 escostart DS3 programmed for AAC 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 escostart DS3 will automatically re-learn
the motor's characteristics if parameter 1A Motor Full Load Current or parameter 2L Adaptive
Control Gain is changed.
NOTE
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 (parameter 2L). The gain setting
determines how much the escostart DS3 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.