ABB ACQ80-04 Firmware Manual page 172

172 Parameters
No. Name/Value
Squared
97.49 Slip gain for scalar
0...200 %
97.94 IR comp max
frequency
1.0...200.0 %
Description
Squared ratio for centrifugal pump and fan applications.
With squared U/f ratio the noise level is lower for most
operating frequencies. Not recommended for permanent
magnet motors.
Sets gain for slip compensation (in %) while drive is operating
in scalar control mode.
• A squirrel-cage motor slips under load. Increasing the
frequency as the motor torque increases compensates for
the slip.
• Requires parameter 99.04 Motor control mode
0 = No slip compensation.
1...200 = Increasing slip compensation. 100% means full slip
compensation according to parameters
frequency and 99.09 Motor nominal
Slip compensation in %.
Sets the frequency at which IR compensation (set by
parameter 97.13 IR compensation) reaches 0 V. The unit is %
of motor nominal frequency.
IR compensation
When enabled, IR compensation provides an extra voltage
boost to the motor at low speeds. Use IR compensation, for
example, in applications that require a high breakaway
torque.
Motor voltage
97.13
IR compensation maximum frequency in %.
= Scalar.
99.08 Motor nominal
speed.
A
A = IR compensated
B = No compensation
f (Hz)
B
97.94
Def/FbEq16
1
0
1 = 1%
80.0
1 = 1%