Parker AC30 - Pattern Generator

D-110 Parameter Reference
AC30 series Variable Speed Drive
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.
Path
Default
Range
Units
Writable
Stack Frequency
0412
Parameters::Motor Control::Pattern
Generator
4.00
2.00 to 16.00
kHz
ALWAYS
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
Parameters::Motor Control::Pattern
Generator
TRUE
ALWAYS
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
Parameters::Motor Control::Pattern
Generator
FALSE
ALWAYS
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
Parameters::Motor Control::Pattern
Generator
1.000
0.000 to 10.000
s
STOPPED
Sets the minimum allowed delay between disabling and then re-enabling PWM production (i.e. stopping and starting the drive).