Lenze EVF9383 - Manual (Page 155)

Adjusting the motor
Automatic collection of motor data
6.6
6.6.6
l
6.6−15 EDSVF9383V EN 7.1−04/2012
ƒ Set the acceleration and deceleration times so that the drive can follow
the speed profile without reaching I
max
of the controller.
ƒ A correct current control during operation in generator mode is only
possible with an external brake resistor.
ƒ Drive behaviour with motor or generator overload (C0054 > C0022 or
C0023):
– The controller reduces the speed up to 0 min
−1 .
– The controller cancels the change of the speed if the load falls below
the limit value again.
ƒ When operating with switching frequency > 2 kHz, C0022 and C0023
must be adapted to the permissible output currents (derating).
ƒ A correct current control (C0075, C0076) in generator mode is only
possible with a connected brake resistor or in DC bus connection with
energy exchange.
6.6.6 Automatic collection of motor data
The motor data identification serves to detect the required motor data and
influences of the motor cable.
Before executing the identification you must manually enter the motor data
from the motor nameplate into the corresponding codes.
Vector control (C0006 = 1)
In the vector control mode the motor data identification must be executed
before initial commissioning.
ƒ In case of vector control without temperature feedback, the heating of
the motor in the motor model is not taken into consideration.
ƒ In case of vector control with thermal sensor KTY a motor temperature
of 20 °C in the motor model is considered.
Important: The temperature feedback must be activated (C0594 = 0 or
C0594 = 2) before you execute the motor data identification.
V/f characteristic control (C0006 = 5)
In the Lenze setting, the controllers are defined for a power−adapted motor
with 10 m of motor cable. Therefore the motor data identification is not
essential.
ƒ The identification of the motor data also influences the smooth
running behaviour. When identifying the motor data for this operating
mode, you can optimise the smooth running behaviour at low speeds.
Adjustment
Description