G7 ASD Operation Manual 111
PWM Carrier Frequency
Program ⇒ Special Control Parameters ⇒ Carrier Frequency
This parameter sets the frequency of the puls e w idth modulation signal applied
to the motor.
Note: The carrier frequency must be 2.2 kHz or above except when
operating in the Constant Torque, Variable Torque, or the 5-
Point Setting modes.
Note: The maximum Carrier Frequency setting allowed is 5.0 kHz for
the following ASDs:
230-volt ⇒ 75 HP – 150 HP.
460-volt ⇒ 150 HP – 350 HP.
600-volt ⇒ 150 HP – 300 HP.
The maximum Carrier Frequency setting allowed for all other
ASDs is 15 kHz.
Setting the Carrier Frequency above the Derat e Threshold frequency (as listed
below) for a given ASD will reduce the capability of the ASD.
Direct Access Number — F300
Parameter Type — Numeri cal
Factory Default — 2.200
Changeable During Run — No
Minimum — 0.500
Maximum — (ASD-dependent)
Units — kHz
Example
Break/Make ST
Program ⇒ Protection Parameters ⇒ Retry/Restart
This parameter Enables/Disables the ability of the drive to start in to a spinning
motor when the ST – CC connection opens momentarily and is then cl osed
(Break/Make ST) or after a power interruption (momentary power failure). This
parameter also Enables/Disables F312 and F313.
Settings:
Box checked (Enabled)
Box not checked (Disabled)
Direct Access Number — F301
Parameter Type — Check Box
Factory Default — Disabled
Changeable During Run — Yes
Carrier-Frequency Derate Threshold Frequency
Derate Threshold Frequency2.2 kHz 5.0 kHz 6.0 kHz 8.0 kHz
VT130G7U
2750B – 215KB 2500B 6160B 2010B – 2600B
2750B – 215KB 2600B 6400B 2400B
415KB – 435KB 4400B 6400B 4015B – 4330B
415KB – 435KB 412KB 4500B – 410KB
615KB – 635KB 410KB 4600B – 4750B
412KB 6015B – 6120B
610KB 6220B – 6330B
610KB 6220B – 6330B
612KB 6500B – 6750B
6500B – 6750B
F300 F301