Summary
Preface
P. 6
Chapter 2
P. 17
Technical data
Chapter 5
P. 76
Reception, storage
and installation
Chapter 4
P. 54
General information
Chapter 3
P. 47
Application notes
Chapter 6
P. 115
Options
Chapter 7
P. 129
Preventive maintenance
Chapter 1
P. 15
Overview
and installation diagram
Answer Drives 1000
125
6
6.6 SINUSOIDAL FILTER
The sinusoidal filter, eliminating the high frequency components of the
output voltage, allows to obtain an almost sinusoidal and without peaks
voltage on the motor and, moreover, reduces the acoustic noise increase
of the motor powered by the drive.
The sinusoidal filter is particularly suitable with motors that do not have
a suitable degree of insulation for the drive power supply, motors of
submersible pumps with long cables, motors in classified environment and
applications with a transformer at the drive output.
It can be used only with scalar control (V / Hz) and is dimensioned for a
switching frequency of 2 KHz (1.5 KHz for AD1A470F and AD1A940M)
and for a maximum output frequency equal to 50Hz
Before connecting the drive to the motor, check that the current drawn
by the capacitor bank of the LC filter to the drive output (detect the
capacitance value from the functional diagram of the electrical panel) is
less than 90% of the no-load current of the motor.
It is necessary to check this condition to avoid the possibility of self-
energizing of the motor, resulting in serious damage to both the machine
and the operator.
6.6 SINUSOIDAL FIL
TER
Summary of Contents for AD1A008FBBNH
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