KEB COMBIVERT F5 MULTI Applications Manual page 329

Initial Start-up
7.2.3 Adjustment
Assistance
Speed Controller
Problem: Very long transient process, but stabilization
during constant run
Solution: Increase P-fraction (cS.6); eventually reduce
I-fraction (cS.9)
Problem: Sustained oscillation short billowy, noises,
vibes
Solution: Decrease P-fraction (cS.6)
Problem: Overshoot too long, strong speed
decreases at load change
Solution: Increase I-fraction (cS.9)
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After initial start-up the following adjustments must be done:
Switch off control release (terminal X2A.16) ⇒ Inverter in status ÑnoPì
1.
2. Select regulated operation
3. Adjust speed controller
Name: Basis
KEB COMBIVERT F5-M / S
Start-up
⇒ Parameter cS.0
⇒ see adjustment tips below
Problem: Speed overshoot too high
Solution: Increase P-fraction (cS.6); eventually
reduce I-fraction (cS.9)
Problem: Transient too slow / remaining system
deviation
Solution: Increase I-fraction (cS.9)
Problem: Sustained oscillation long billowy
Solution: Reduce I-fraction (cS.9) and / or reduce
P-fraction (cS.6)
Date
18.05.04
Chapter Section Page
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