Page 7.5 - 16 COMBIVERT F5-A, -E, -H © KEB, 2012-10
Motor data and controller adjustments of the asynchronous motor
motor data sheet for dr.08.
Due to saturation, parameter dr.10 "TPIM main inductivity" depends on the chosen magnetising current. This
is dened by the rated motor current (dr.00), cos(phi) (dr.04) and factor ux adaption (dr.19). Since the value of
the main inductance given in the motor data sheet possibly applies for a different current, this parameter (dr.10)
must always be identied, to ascertain the correct value of the current magnetising current.
7.5.2.3.1.1 Identication/general
The required equivalent circuit data for the motor model can be determined by the KEB COMBIVERT itself.
First the motor data must be entered and the motor adaption must be executed according to chapters 7.6.1.
There are two possibilities to start the identication:
- Writing of parameter dr.48 in inverter state "stop (mod. off)", measurement is starting auto-
matically.
- Writing of parameter dr.48 in inverter state "nop" with subsequent control release.
Parameter dr.48 cannot be written in other operating conditions.
The measured values can be invalid in case of strong overdimensioning of the inverter. The rated current of the
motor should be at least 1/3 of the maximum short time current limit. The short time current limit is determined
by the overload characteristics and can be taken from the power circuit manual or parameter In.18 (hardware
current).
The direction of rotation during identication of the main inductance is always "clockwise rotation"!
Value „82: calculate drive data / Cdd“ is output in inverter state ru.00 during the measurement. After success-
ful measurement the display is ru.00 = „127: drive data calculated / Cddr“.
If the measurement is interrupted with an error, ru.00 = 60 ERROR! drive data/ E.Cdd" is displayed.
No correct operation can be ensured in case of interruption.
The actual state of the identication is displayed in parameter dr.62 "state motor ident." The control release
must be switched off in order to leave the identication mode.
Parameter dr.48 must be written again in order to start a new measurement.
If the internal brake handling is used in the application, then it must be deactivated for the identication. For
safety reasons the output signal "brake release" is not set during measurement, since the motor cannot gene-
rate a dened torque in this time. Stator resistance, rotor resistance and leakage inductance can be measured
also at engaged brake.
For the identication of the main inductance, the drive must be decoupled from the load and the output swit-
ching condition which is assigned to the break control must be set to value "1" (= always active), setting the
brake permanently open.
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