Slip Calculation From Motor Equivalent Circuit Diagram Data - Lenze 8400 StateLine C Reference Manual

8400 StateLine C | Reference manual
Motor control (MCTRL)
Sensorless vector control (SLVC)
5.7.4.6

Slip calculation from motor equivalent circuit diagram data

This function extension is available from version 11.00.00!
In order to achieve a better speed stability and torque accuracy, the slip calculation can be
either derived from the motor nameplate data (e.g. rated motor speed) or the motor
equivalent circuit diagram data (stator resistance, rotor resistance etc.).
The data to be used for sensorless vector control is selected via bit 0 in C02879/1:
Setting
Bit 0 SLVC
Bit 1 ... 7 Reserved

Note!
In order that the slip can be calculated from the motor equivalent circuit
diagram data, the equivalent circuit data (stator resistance, rotor resistance etc.)
must be known as exactly as possible.
• Selecting a motor in the »Engineer« motor catalogue loads the exact motor
equivalent circuit diagram data.
• When the motor nameplate data is entered manually and the motor
equivalent circuit diagram data is then detected via the motor parameter
identification, the "extended identification"
In the slip calculation from the motor equivalent circuit diagram data, the slip
compensation (C00021) has no influence anymore.
172
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Info
In case of sensorless vector control:
• "0" ≡ Slip calculation from motor nameplate data (Lenze setting)
• "1" ≡ Slip calculation from motor equivalent circuit diagram data
Automatic motor data identification
L
(C02867/1 = 2) must be used.
( 112)
Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011