KEB COMBIVERT F5 Serie Manual De Instrucciones página 91

Speed search condition
Quick stop time
When connecting the frequency inverter onto a decelerating motor, an
error can be triggered by the differing rotating field frequencies. With
activated speed search the inverter searches for the actual motor speed,
adapts its output frequency and accelerates with the adjusted ramp to the
given set value. During speed search CP.3 displays "SSF". The parameter
determines, under what conditions the functions operate. In case of
several conditions the sum of the value must be entered.
Example: CP.26 = 12 means after reset and after auto-reset UP.
Value Condtion
0 function off
1 at control release
2 at switch on
4 after reset
8 after Auto-Reset UP
Adjustment range:
Resolution:
Factory setting:
Note:
The fast-stop function is activated depending on CP.28. The parameter
determines the time needed to decelerate from 100 Hz to 0 Hz. The actual
deceleration time is proportional to the frequency change. The response
to overtemperature (CP.28) is disabled in the factory setting. If it is
activated then the modulation switches off automatically after 10 s if the
motor is still too hot.
100 Hz
–––––– x actual deceleration time = CP.27
delta f
Adjustment range:
Resolution:
Factory setting:
Example: actual deceleration time = 5s; the drive should decelerate from
50 Hz to 0 Hz. delta f = 50 Hz - 0 Hz = 50 Hz
CP.27 = (100 Hz / 50 Hz) x 5 s = 10 s
Operation of the Unit
0...15
Enter-Parameter
0,00...300,00 s
0,01 s
2,00 s
1
8
f
100 Hz
CP. 27
GB - 21
GB
t