Lenze E82EV302K4C User Manual

Optimising the operating behaviour
Inverter chopper frequency
10
Function library
10.4
10.4.2
L
10.4-3
EDS82EV903-1.0-11/2002
10.4.2 Inverter chopper frequency
The chopper frequency of the inverter influences the concentricity behaviour, the
power loss in the controller and the noise generated in the connected motor. The
Lenze setting of 8 kHz is the optimum value for standard applications. The
following rule of thumb applies:
The lower the chopper frequency
l the lower the power loss.
l the higher the noise generation.
l the quality of concentricity.
In addition it is possible to adjust whether the chopper frequency is changed to
4 kHz, if the heatsink temperature amounts to only 5°C below the permissible
maximum temperature.With thismeasureyouavoid that the drivewillbeinhibited
through the fault ”overtemperature” and the motor will coast without torque.
)
))
) Note!
Please consider that, when operating with a chopper frequency of
16 kHz, the output current must be reduced to prevent the
controller from being overheated (derating).
You must adapt the current limiting values (C0022 and C0023) so
that the current indicated in the technical data will not be
exceeded.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0018
v
Chopper frequency 2
0 2kHzsin
General rule:
The lower the chopper frequency
^ 10.4-3
v
1 4kHzsin
T
h
e
l
o
w
e
r
t
h
e
c
h
o
p
p
e
r
f
r
e
q
u
e
n
c
y
• the lower the power loss
• the hi
g
her the noise
g
eneration
2 8kHzsin
l
o
w
n
o
i
s
e
g
e
n
e
r
a
t
i
o
n
•
t
h
e
h
i
g
h
e
r
t
h
e
n
o
i
s
e
g
e
n
e
r
a
t
i
o
n
• the better the smooth running quality
Medium-fre
q
uenc
y
motors are onl
y
3 16 kHz sin
low noise generation
M
e
d
i
u
m
-
f
r
e
q
u
e
n
c
y
m
o
t
o
r
s
a
r
e
o
n
l
y
allowed to b e operated at 8 kHz sin or
16 kHz sin (C0018 = 2 or 3)!
C0018 Chopper frequency 6
0 2kHzsin
General rule: ^ 10.4-3
v
p
p
q
y
(only 8200 vector
1
5
9
0
k
W
)
1 4kHzsin
The lower the chopper frequency
t
h
l
t
h
l
15 ... 90
k
W)
2 8kHzsin
l
o
w
n
o
i
s
e
g
e
n
e
r
a
t
i
o
n
• the lower the power loss
•
t
h
e
h
i
g
h
e
r
t
h
e
n
o
i
s
e
g
e
n
e
r
a
t
i
o
n
3 16 kHz sin
low noise generation
• the higher the noise generation
•
t
h
e
b
e
t
t
e
r
t
h
e
s
m
o
o
t
h
r
u
n
n
i
n
g
q
u
a
l
i
t
y
4 2kHz
•
t
h
e
b
e
t
t
e
r
t
h
e
s
m
o
o
t
h
r
u
n
n
i
n
g
q
u
a
l
i
t
y
Medium-fre
q
uenc
y
motors are onl
y
5 4kHz
l
o
w
p
o
w
e
r
l
o
s
s
M
e
d
i
u
m
-
f
r
e
q
u
e
n
c
y
m
o
t
o
r
s
a
r
e
o
n
l
y
allowed to b e operated at 8 kHz sin or
1
6
k
H
i
(
C
0
0
1
8
2
3
)
!
6 8kHz
low power loss
p
16 kHz sin (C0018 = 2 or 3)!
7 16 kH z
8 1kHzsin
9 ... 11
Reserved
12 1 kHz f_top
low power loss
Description
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Lenze E82EV302K4C Specifications

General

Brand	Lenze
Model	E82EV302K4C
Category	DC Drives
Language	English