Maximum Current - KEB COMBIVERT F6 Programming Manual

Protection functions

Maximum current

Index Id-Text Name
dr03 rated current
0x2203
dr12 max. current %
0x220D
de28 inverter rated current
0x201C
de29 inverter maximum current
0x201D
is11 max. current [de28%]
0x350B
set current limit
is35
0x3523
The maximum apparent current (not for v/f operation) can be preset via parameters
is35 set current
de28 inverter rated current
rameters and they display the inverter rated current and the maximum current of
the inverter. Due to e.g. insufficient cooling, it may be necessary to limit the maxi-
mum inverter current additionally with
The maximum permissible motor current can be adjusted in
The effective current limitation is the lower value of
The maximum current of the drive (de29) is always determined as fixed upper limit.
This value is determined by
The setting range is 50.00% to 95.00% of the hardware-related turn-off current of
the inverter.
NOTICE
i
Limitations can be considered separately by the inverter or the motor with
is11.
© 2022 KEB Automation KG
Function
Rated motor current
Maximum permissible motor current (in % dr03)
Inverter rated current
Inverter maximum current (only software limiting)
Maximum permissible inverter current (in % de28)
Software current limit in % turn-off current (OC current)
of the device. Resolution 0.01%
limit, dr12 max. current %
and de29 inverter maximum current
is35 set current limit.
➢ The default value of the software current limit is 83.33% of the typi-
cal turn-off current to ensure safe operation. The displayed current
is always only an average value during a power module cycle. The
superimposed current ripple dependent on the motor, which is not
visible in the current display, can trigger the overcurrent cut-off, alt-
hough the display value of the current is clearly below the turn-off
current. The specified switch-off current threshold is a typical, toler-
ance affected value. If the software current limit is higher than the
default value, the design must be checked to prevent sporadic
overcurrent cut-offs.
➢ Parameter
is35 is a Power-On Parameter. i.e. a change of the value is only
effective after restart.
and is11 max. current
is11 to prevent OH errors.
dr12 max. current
is11 and dr12.
[de28%].
are only display pa-
%.
dr12 and
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