Technical data
Current characteristics
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46
EDS84ASC552 EN 6.0
4.3
Current characteristics
Under certain operating conditions, the maximum output current is limited for all devices:
ƒ
When exceeding the maximum heatsink temperature, the controller switches from
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.
ƒ
For output frequencies f
out
< |5Hz|
ƒ
Depending on the switching frequency mode: fixed or variable
0
0
5
5
f
[Hz]
out
f
[Hz]
out
0
1
I
OUT
I
OUT
I
aM
I
aM
I
aM02
I
aM04
I
aM08
I
aM016
I
aM0v
I
aM2
I
aM4
I
aM8
I
aM16
I
aMv
8400GG084
Fig. 4−1
Current derating characteristics
0
Derating curve depending on the fixed switching frequency
1
Derating curve depending on the variable switching frequency
I
out
Output current
I
aM
Maximum output current (overload current)
I
aMx
Maximum output current (overload current) at different switching frequencies: 2kHz,
4kHz, 8kHz and 16kHz
I
aM0x
Maximum output current (overload current) at f
out
= 0Hz and different switching
frequencies: 2kHz, 4kHz, 8kHz, 16kHz
I
aMv
Maximum output current (overload current) at a variable switching frequency
I
aM0v
Maximum output current (overload current) at f
out
= 0Hz and a variable switching
frequency
f
out
Field frequency at the output U, V, W
The maximum output currents depending on the mains voltage and the switching
frequency modes are shown in the following tables.
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