Toshiba H7 - Page 116

H7 ASD Operation Manual 109
PWM Carrier Frequency
Program ⇒ Special Control Parameters ⇒ Carrier Frequency
This parameter sets the frequency of the pulse width modulation signal applied
to the output waveform.
Note: For proper operation, 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.
Direct Access Number — F300
Parameter Type — Numerical
Factory Default — 2.200
Changeable During Run — No
Minimum — 0.500
Maximum — 15.000
Units — kHz
Break/Make ST
Program ⇒ Protection Parameters ⇒ Retry/Restart
This parameter Enables/Disables the ability of the drive to start into a spinning
motor when the ST – CC connection momentarily opens and is then closed
(Break/Make ST) or after a power interruption (momentary power failure). This
parameter also Enables/Disables F312 and F313.
Direct Access Number — F301
Parameter Type — Check Box
Factory Default — Disabled
Changeable During Run — Yes
Ridethrough Mode
Program ⇒ Protection Parameters ⇒ Undervoltage/Ridethrough
This parameter determines the motor-control response of the drive in the event
of a momentary power outage.
Settings:
Off
Ridethrough
Stop
Direct Access Number — F302
Parameter Type — Selection List
Factory Default — Off
Changeable During Run — Yes
Number of Retries
Program ⇒ Protection Parameters ⇒ Retry/Restart
After a trip has occurred, this parameter sets the number of times that an
automatic system restart is attempted.
See the section titled Safety Precautions on pg. 2 for further information on this
setting.
Direct Access Number — F303
Parameter Type — Numerical
Factory Default — 00
Changeable During Run — Yes
Minimum — 00
Maximum — 10
F300 F303
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