Current Characteristics - Lenze 8400 StateLine C Hardware Manual

4 Technical data

Current characteristics

4.3 Current characteristics
Under certain operating conditions, the maximum output current is limited for all devices:
When exceeding the maximum heatsink temperature, the controller switches from
ƒ
16kHz to 8kHz and from 8kHz to 4kHz (but not from 4kHz to 2kHz), independent of
the switching frequency mode. This function can be deactivated under C00144.
If the heatsink temperature keeps rising, the innverter output is inhibited and the
error message "trip" is shown. This will also occur when the switching frequency
reduction is deactivated.
For output frequencies f
ƒ
Depending on the switching frequency mode: fixed or variable
ƒ
0
I
OUT
I
aM
I
aM02
I
aM04
I
aM08
I
aM016
0
Fig. 4−1
The maximum output currents depending on the mains voltage and the switching
frequency modes are shown in the following tables.
46
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< |5Hz|
out
I
aM2
I
aM4
I
aM8
I
aM16
5 f [Hz]
out
Current derating characteristics
0
Derating curve depending on the fixed switching frequency
1
Derating curve depending on the variable switching frequency
I Output current
out
I Maximum output current (overload current)
aM
I Maximum output current (overload current) at different switching frequencies: 2kHz,
aMx
4kHz, 8kHz and 16kHz
I Maximum output current (overload current) at f
aM0x
frequencies: 2kHz, 4kHz, 8kHz, 16kHz
I Maximum output current (overload current) at a variable switching frequency
aMv
I Maximum output current (overload current) at f
aM0v
frequency
f Field frequency at the output U, V, W
out
l
1
I
OUT
I
aM
I
aM0v
0 5 f [Hz]
out
= 0Hz and different switching
out
= 0Hz and a variable switching
out
I
aMv
8400GG084
EDS84ASC552 EN 6.0