240
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.
• In multimotor systems, do not change the switching frequency from
the default value.
• 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.
• In multimotor systems, do no disable (set
OFF
) the function.
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)
1 kHz
2 kHz
4 kHz
8 kHz 12 kHz*
0.75…37
x
x
x
x
x
45…110
x
x
x
x
-
132
…160
x
x
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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