Pattern Generator - Parker AC30 Serie Manual Del Producto

D-114
Parameter Reference

Pattern Generator

Parameters::Motor Control::Pattern Generator
The pattern generator function allows you to configure the Drive' PWM (Pulse Width Modulator) operation.
Parameter Name No.
Stack Frequency 0412
This parameter selects the PWM switching frequency of the output power stack.
The higher the switching frequency, the lower the level of motor audible noise. However, this is only achieved at the expense of
increased drive losses and reduced stack current rating.
Max value is Control Mode dependant :
12 kHz for PMAC SVC
14kHz for IM SVC
16 kHz for V/Hz
If the Peer To Peer feature is enabled, then the switching frequency is limited to 8kHz
Random Pattern IM 0413
This parameter selects between random pattern (quiet motor noise) or the more conventional fixed carrier PWM strategies, for
induction motor only. When TRUE, random pattern is enabled. For Induction Motor Control, random pattern is only suitable for Stack
Frequency <=12kHz.Default value for induction motors is TRUE.
If the Peer To Peer feature is enabled, random pattern is only suitable for Stack Frequency <= 6 kHz
Random Pattern PMAC 1268
This parameter selects between random pattern (quiet motor noise) or the more conventional fixed carrier PWM strategies, for PMAC
motor only. When TRUE, random pattern is enabled. For PMAC SVC control random pattern is only suitable for Stack Frequency
<=8kHz. Default value for PMAC motors is FALSE.
Deflux Delay 0414
Sets the minimum allowed delay between disabling and then re-enabling PWM production (i.e. stopping and starting the drive).
Path
Parameters::Motor Control::Pattern
Generator
Parameters::Motor Control::Pattern
Generator
Parameters::Motor Control::Pattern
Generator
Parameters::Motor Control::Pattern
Generator
Default Range
4.00 2.00 to 16.00
TRUE
FALSE
1.000 0.000 to 10.000
Units Writable
kHz ALWAYS
ALWAYS
ALWAYS
STOPPED
s
AC30 series Variable Speed Drive