Lenze E82EV751K4C User Manual

Operating mode
Sensorless torque control with speed limitation
10
Function library
10.3
10.3.3
L
10.3-11
EDS82EV903-1.0-11/2002
10.3.3 Sensorless torque control with speed limitation
The setpoint linked with C0412/6 is interpreted as torque setpoint. Actual values
are not required. The controller varies the speed within the set frequency range
in dependence of the load and the torque selected.
The speed is limited via setpoint 1 or the maximum frequency.
Application with, for instance, winding drives.
)
))
) Note!
l The sensorless torque control only operates in motor mode,
not in generator mode.
l 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 charact eristic control V ~ f
(Linear characteristic with constant V
min
boost)
• Commissioning without motor parameter
identification possible
• Benefit of identification with C0148:
I
m
p
r
o
v
e
d
s
m
o
o
t
h
r
u
n
n
i
n
g
a
t
l
o
w
^ 10.3-1
3 V/f charact eristic control V ~ f
2
(Square-law characteristic with constant V
min
boost)
–
Improved smooth running at low
speed
– V/f ra t e d f re quency (C0015) and slip
(C0021) are calculated and stored.
They do not have to be entered
4 Vector control
For initial selection enter the motor data
5 Sensorless to rque control with speed limitation
• Torque setpoint via C0412/6
• Speed limit ation via setpoint 1 (NSET1-N1), if
C0412/1 is a ssigned, if not via max. frequency
(C0011)
and identify the motor parameters with
C0148
Otherwise commissioning is not
possible
C0047* Torque setpoint or
torque limit value
(
M
C
T
R
L
1
M
S
E
T
)
400 0 {1 %} 400 The value set will be lost when
switching the mains!
^ 10.3-11
q
(MCTRL1-MSET)
Ref.: Rated motor torque detected by motor parameter
identification
Control mode ”Sensorless torque control”
(C0014 = 5):
• Torque setpoint selection if C0412/6 =
FIXED-FREE (not assigned)
• Torque setpoint display if C0412/6 is
linked with a signal source
Control mode ”V/f characteristic control” or
”Vector control ” (C0014 = 2, 3, 4):
• Torque limit value is displayed if
C0412/6 is linked with a signa l source
• C0047 = 400 is displaye d if C0412/6 =
FIXED-FREE (not assigned)
C0077* Gain I
max
controller 0.25 0.00
= P component not
active
{0.01} 16.00 ^ 10.11-1
C0078* Integral action time
I
max
controller
65
à 130
12 {1 ms} 9990
= I component not
active
à Only 8200 vector 15 ... 90 kW ^ 10.11-1
C0087 Rated motor speed à 300 {1 rpm} 16000 à Depending on the controller ^ 10.9-1
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
^ 10.9-1
Description
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Lenze E82EV751K4C Specifications

General

Brand	Lenze
Model	E82EV751K4C
Category	DC Drives
Language	English