4
CP - Parameter
Operation
4
3
11
KEB COMBIVERT F5-M / S
Name: Basis
17.05.04
Section
Page
Date
©
KEB Antriebstechnik, 2003
All Rights reserved
Chapter
F5-MULTI:
Load motor dependent
parameter
The basic settings of the inverter correspond to the size of the unit and the respective
motor (see 4.3.7 "Factory Settings"). If the motor data in CP.11...16 are changed, then
CP.17 must be activated once. This re-adjusts the current controller, torque curve and
torque limit. With this, the torque limit is set at the value, that is maximally possible in
the speed range (depending on inverter rated current), but not above the rated motor
torque x 3.
CP.17 = 1 :
Å Pre-adjustment of the motor-dependent control-parameters.
Å The voltage class of the inverter is taken as input voltage.
CP.17 = 2 :
Å Pre-adjustment of the motor-dependent control-parameters.
Å The DC-link voltage /
√
2 measured at switch on is taken as input
voltage. Thus the frequency inverter can be adapted to the actually
available mains voltage (e.g. USA with 460†V).
Adjustment range:
0Ö2
Resolution:
1
Factory setting:
0
When control release is active the adjustment was not completed.
"nco" appears in the display!
F5-SERVO:
Motor winding resistance
Adjustment range:
0,000...50,000 Ohm
Resolution:
0,001 Ohm
Factory setting:
LTK
Adjustment of the motor winding resistance according to the data sheet. The factory
setting depends on motor.
F5-MULTI:
Boost
In the lower speed range a large part of the motor voltage decreases on the stator
resistance. So that the breakdown torque of the motor remains nearly constant in the
controlled operation over the entire speed range, the voltage drop can be compensated
by the Boost. During regulated operation (CP.10 = 4 or 5) this parameter has no
function.
Adjustment range:
0,0...25,5 %
Resolution:
0,1 %
Factory setting:
LTK
Adjustment:
Å Determine the rate of utilzation in no-load operation with rated speed
Å Preset about 300 rpm and adjust the boost, so that about the same
rate of utilization is reached as with the rated speed.
When the motor, during continuous operation, drives with low speed and too
high voltage it can lead to an overheating of the motor.