Wfu-Xx Regen Filter Module - ABB ACSM1 Hardware Manual

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WFU-xx regen filter module

The WFU-xx regen filter module is an essential part of the ACSM1-204 regen supply
module and it does not work without the filter. The regen supply module uses the
filter to actively shape the AC line current to resemble sinusoidal waveform and to
filter most of the current ripple at the switching frequency and higher frequencies.
The regen supply module used with the filter produces a low-harmonic input current.
By default, the filter is protected against overheating (caused by a faulty fan, for
example) with a thermistor. If the filter temperature becomes too high, the regen
supply module is automatically stopped. The thermistor must always be connected
to the ACSM1-204 thermistor input X4: 8, 9.
WARNING! If the overheating protection is removed with parameter settings, the
filter may be damaged permanently or cause a fire.
Note: The 24 V DC power supply needed for the cooling fan is not included in the
delivery. For selecting a supply, see Supply voltage requirements for the WFU-xx
regen filter module fan on page 72.
WARNING! Use the WFU-xx regen filter module only with an ACSM1-204 regen
supply module. Use the filter only with a regen supply module of an appropriate
frame size.
WARNING! Do not lengthen the output cables.
The ACSM1-204