Function library
Motor data entry/automatic detection
7−48
L
EDB82MV752 EN 5.2
7.7 Automatic detection of motor data
Description
This function serves to detect the required motor data and the motor cable influences.
Must be done before the first commissioning of vector control (C0014 = 4) or sensorless torque
control (C0014 = 5). Otherwise commissioning is not possible.
) Note!
The motor parameter identification influences the smooth running behaviour in the
control mode "V/f characteristic control with constant U
min
boost" (C0014 = 2 or 3).
If you identify the motor parameters for this control mode, you can optimise the
smooth running behaviour for low speeds.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0084 Motor stator
resistance
0.000 0.000 {0.001 } 64.000
7−48
0.0 0.0 {0.1 m } 6500.0 Only 8200 vector 15 ... 90 kW
C0087 Rated motor speed à 300 {1 rpm} 16000 à Depending on the controller 7−48
C0088 Rated motor
current
à 0.0 {0.1 A} 650.0 à Depending on the controller
0.0 ... 2.0 x rated output current of the
controller
7−48
C0089 Rated motor
frequency
50 10 {1 Hz} 960 7−48
C0090 Rated motor
voltage
à 50 {1 V} 500 à 230 V with 230 V controllers,
400 V with 400 V controllers
7−48
C0091 Motor cos ϕ
à 0.40 {0.1} 1.0 à Depending on the controller 7−48
C0092 Motor stator
inductance
0.0 0.000 {0.1 mH} 200.0
7−48
0.00 0.00 {0.01 mH} 200.00 Only 8200 vector 15 ... 90 kW
C0148*
Motor parameter
identification
0
0 Ready
Only when the motor is cold!
1. Inhibit controller, wait until drive is at
standstill
2. Enter the correct motor data under
C0087, C0088, C0089, C0090, C0091
(see motor nameplate).
3. Set C0148 = 1 by
4. Enable controller
The identification
– starts, goes off
– the motor makes a high−pitched tone,
but does not rotate!
– takes approx. 30 s
– is completed when
is on again
5. Inhibit controller
7−48
1 Start identification
V/f−rated frequency (C0015), slip
compensation (C0021) and motor stator
inductivity (C0092) are calculated and saved.
The motor stator resistance (C0084) = total
resistance of motor cable and motor is
measured and saved
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