Lenze E82xVxxxKxxxxx - Manual (Page 261)

Function library
Operating mode
Vector control
10
l
261 EDS82EV903 EN 3.0
10.2.2 Vector control
Description
Compared with the V/f characteristic control the vector control offers considerably higher
torque and lower current consumption during idle running. The vector control is an
improved motor current control following the Lenze FTC technology. Select vector control
for operation of the following drives:
ƒ Single drives with extremely changing loads
ƒ Single drives with heavy start conditions
ƒ Sensorless speed control of standard three−phase AC motors
)
Note!
ƒ The connected motor should maximally be two power classes lower than
the motor assigned to the controller.
ƒ The operation with vector control is not possible if several drives are
operated on one controller.
ƒ The motor parameter identification is absolutely vital! Otherwise
commissioning is not possible.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0014
v
Operating
mode 2 2 V/f characteristic control V ~ f
(linear characteristic with constant
V
min
boost)
l Commissioning is possible
without identifying motor
parameters
l Advantage of identification
with C0148:
– Improved smooth running at
low speeds
– V/f rated frequency (C0015)
and slip (C0021) are
calculated and saved. They do
not have to be entered
^ 255
3 V/f characteristic control V ~ f 2
(square−law characteristic with
constant V
min
boost)
4 Vector control In the case of the first selection
enter the motor data and identify
them with C0148
Otherwise commissioning is not
possible
When C0014 = 5, C0019 must be
set = 0 (automatic DC injection
brake is deactivated)
5 Sensorless torque control with speed
limitation
l Torque setpoint via C0412/6
l Speed limitation via setpoint 1
(NSET1−N1) if C0412/1 is assigned,
otherwise via maximum frequency
(C0011)
C0015
uSEr
V/f rated
frequency 50.00 7.50 {0.02
Hz}
960.00 l C0015 is calculated and saved
during the motor parameter
identification with C0148.
l The setting applies to all
permitted mains voltages
^ 257
^ 261
C0021 Slip
compensation
0.0 −50.0 {0.1 %} 50.0 C0021 is calculated and saved
during the motor parameter
identification with C0148.
^ 268
C0054
* Apparent
motor current
(MCTRL1−IMOT) 0.0 {A} 2000.0 Read only
C0087 Rated motor
speed
à 300 {1 rpm} 16000 à Device−dependent ^ 315