
234 Parameter listing and descriptions
ACH550-01 User's Manual
2606 SWITCHING FREQ 1, 2, 4, 8, 12 kHz
Sets the switching frequency for the drive.
• Higher switching frequencies mean less noise.
• 12 kHz switching frequency is available in scalar control mode, that is
when parameter 9904
MOTOR CTRL MODE = 3 (SCALAR:FREQ).
• See the availability of switching frequencies for different drive types in
the table below:
2607 SWITCH FREQ CTRL 0=OFF, 1=ON
Activates the switching frequency control. When active, the selection of
parameter 2606
SWITCHING FREQ is limited when the drive internal
temperature increases. See the figure below. This function allows the
highest possible switching frequency at a specific operating point.
Higher switching frequency results in lower acoustic noise.
0 =
OFF – The function is disabled.
1 =
ON – The switching frequency is limited according to the figure.
2608 SLIP COMP RATIO 0…200%
Sets gain for slip compensation (in %).
• A squirrel-cage motor slips under load. Increasing the frequency as
the motor torque increases compensates for the slip.
• Requires parameter 9904
MOTOR CTRL MODE = 3 (SCALAR:FREQ).
0 – No slip compensation.
1…200 – Increasing slip compensation. 100% means full slip
compensation.
Code Description Range
Power (kW) 1kHz 2kHz 4kHz 8kHz 12 kHz*
0.75…37 x x x x x
45…110xx xx-
132
…160 xx x- -
* 12 kHz only in scalar control mode
80 °C 100 °C
Drive
4 kHz
12 kHz
temperature
8 kHz
90 °C
f
sw
limit
T
0.75…37 kW
45…110 kW
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