
96
Q7 ASD Installation and Operation Manual
PS Speed Mode 15
Program
⇒
Preset Speeds
⇒
PS Speed Mode 15
Selecting Enable at the Preset Speed Mode Control parameter enables this
parameter. If disabled, only the Speed setting is used for Preset Speed #15.
Same as Preset Speed #1.
Parameter Type — Selection List
Factory Default — T1, V1, AD1, Fwd
Changeable During Run — Yes
PWM Carrier Frequency
Program
⇒
Special Controls
⇒
PWM Carrier Freq
This parameter sets the frequency of the pulse width modulation signal applied
to the motor.
Note: The carrier frequency must be 2.2 kHz or above except when
operating in the Constant Torque or the Variable Torque
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 – 350 HP.
The maximum Carrier Frequency setting allowed for all
other ASDs is 15 kHz.
Setting the Carrier Frequency above the Derate Threshold frequency (as listed
below) for a given ASD will reduce the capability of the ASD.
Parameter Type — Numerical
Factory Default — 2.200
Changeable During Run — No
Minimum — 0.500
Maximum — (ASD-dependent)
Units — kHz
Ramped PWM
Program
⇒
Special Controls
⇒
Ramped PWM
Enables/Disables the variable PWM frequency.
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
Carrier-Frequency Derate Threshold Frequency
Derate Threshold Frequency
2.2 kHz
4.0 kHz
5.0 kHz
6.0 kHz
8.0 kHz
VT130Q7U
2600B – 215KB
4600B
2400B – 2500B
6160B
2010B – 2330B
420KB – 440KB
4500B
4015B – 4400B
615KB – 635KB
412KB – 415KB
4750B – 410KB
6500B
6015B – 6120B
612KB
6220B – 6400B
6600B – 610KB