Lx - Special Functions Parameters - KEB COMBIVERT F5 Reference Manual

6.11 LX - Special Functions Parameters

LX01
Auto Reset

LX02
Switching Frequency
LX06
Function Test
LX - Special Function Parameters
With LX01 Auto Reset, all drive faults, except 'Error Encoder Interface' faults,
can be automatically reset.
The number adjusted in this parameter determines how many times per hour
the elevator drive will automatically reset faults. Before resetting the fault, the
drive will wait 4 seconds to allow everything to stop or stabilize. It is not fault
specific, so with the default setting of 5, if the drive experiences 6 different
faults in one hour the unit will latch the last fault and not reset.
Note: Overload and overtemp faults are not reset until the overload
counter resets or the temperature value drops to the reset level.
The switching frequency of the inverter can be set with this parameter. The
switching frequency can be constantly 8 kHz or 16kHz, each with an automatic
reduction based on the heat-sink temperature.
Settings:
8 kHz
12 kHz
16 kHz
4 kHz
For optimum drive performance, set LX02 to 8kHz (0). In some cases,
higher switching frequencies may result in the drive fault 'Error Overheat
Power Module' Additionally, some power stages may only support up to
8kHz; therefore it will not be possible to increase the switching frequency.
Since the drive's fans are thermostatically controlled, this parameter allows
all fans to be turned on high to check their operation.
Settings:
Off
Fans On
Default = 8 kHz (0)
Default = Off (0)
NUM
0
1
2
3
NUM
0
1
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