94 ACH550-UH User’s Manual
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2606 SWITCHING FREQ 1, 4, 8 kHz - 4 kHz
Sets the switching frequency for the drive.
• Higher switching frequencies mean less noise.
2607 SW FREQ CTRL 0, 1 - 1
The switching frequency may be reduced if the ACH550
internal temperature rises above 90 °C. See Figure. This
function allows the highest possible switching frequency to be
used based on operating conditions. 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% 1 0
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 = SCALAR SPEED.
0 = No slip compensation.
1…200 = Increasing slip compensation. 100% means full slip compensation.
Group 26: Motor Control
Code Description Range Resolution Default S
90 °C 100 °C
ACS5550
4 kHz
8 kHz
Switching frequency limit
Temperature
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