Lenze 8400 - Manual (Page 138)

5 Motor control (MCTRL)
5.1 Motor selection/Motor data
138
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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From version 12.00.00:
9. If C02865/1 - bit 4 = "0" (Lenze setting):
The current controller and field controller parameters are calculated. (See table .)
10. If C02865/1 - bit 5 = "1":
The speed controller parameters are calculated. (See table .)
11. If C02865/1 - bit 6 = "1":
Other controller parameters are calculated. (See table .)
Optimising motor parameter identification
For the measurement of the required variables, the motor is energised via the controller terminals
U, V and W during the motor parameter identification.
The corresponding current controller can be set via the following parameters:
In the Lenze setting, the current controller is preset in such a way that an optimum controller
behaviour is obtained for an asynchronous motor with power adaptation to the controller.
Parameter Info Lenze setting
Value Unit
C00075 Vp current controller 7.00 V/A
C00076 Ti current controller 10.61 ms

Note!
The motor parameter identification can be aborted in the following cases:
• If a special motor (e.g. mid-frequency motor) or a servo motor is used.
• If there is a large deviation between inverter and motor power.
In this case we recommend (with the simple motor parameter identification):
• to reduce the P component Vp of the current controller ( C00075 ) e.g. by halving.
• to increase the time constant Ti of the current controller ( C00076 ) e.g. by doubling.
With the extended motor parameter identification, the current controller parameters
are determined automatically. If the identification is aborted all the same, the current
controller parameters set in C00075 and C00076 can be used by parameterising C02866
to "1".
Another cause for the abort of the motor parameter identification could be the
implausibility of the entered nameplate data, e.g. the entry P = 0 kW for the motor
power.