￭
du/dt filter support
With an external du/dt filter connected to the output of the drive, bit 13 of 95.20
must be switched on. The setting limits the output switching frequency. With
frame size R5i…R7i inverter modules, the setting also forces the drive/inverter
module fan to full speed. Note that the setting is not to be activated with inverter
modules with internal du/dt filters.
Settings and diagnostics
Parameter: 95.20 HW options word 1 (page 513).
￭
Sine filter support
The control program has a setting that enables the use of sine filters (available
separately from ABB and others).
With an ABB sine filter connected to the output of the drive, bit 1 of 95.15 must be
switched on. The setting limits the switching and output frequencies to
• prevent the drive from operating at filter resonance frequencies, and
• protect the filter from overheating.
With a custom sine filter, bit 3 of 95.15 must be switched on. (The setting does
not limit the output frequency.) Additional parameters must be set according to
the properties of the filter as listed below.
Settings and diagnostics
Parameters: 95.15 Special HW settings (page 511), 97.1 Switching frequency
reference (page 527), 97.2 Minimum switching frequency (page 527), 99.18 Sine filter
inductance (page 543) and 99.19 Sine filter capacitance (page 544).
126 Program features
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