Toshiba DN-68249-003, Installation & Operation Manual

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Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
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Start Frequency
Program

Special

Frequency Control
The output of the ASD will remain at 0.0 Hz until the pro -
grammed speed value exceeds this setting during start up. Once
exceeded during start up, the output frequency of the ASD will
accelerate to the programmed setting.
Output frequencies below the Start Frequency will not be output
from the ASD during start up. However, once reaching the Start
Frequency, speed values below the Start Frequency may be out
-
put from the ASD.
If the setting of this parameter results in an over-current condi -
tion at start up, reduce the setting of this parameter to a value
less than the rated slippage of the motor.
If zero-speed torque is required, set this parameter and F243 to
0.0 Hz.
This setting will override the setting of F244 if this setting has a
higher value.
This parameter setting is used during a Jog as the Lower-Limit
Frequency (see
F260 ).
Direct Access Number —
F240
Parameter Type —
Numerical
Factory Default —
(ASD-Depen -
dent)
Changeable During Run —
Yes
Minimum — 0.00
Maximum — (ASD-Dependent)
Units — Hz
Run Frequency
Program  Special  Frequency Control
This parameter establishes a center frequency (Run Frequency)
of a frequency band.
Parameter F242 provides a plus-or-minus value for the Run Fre -
quency; thus, establishing a frequency band.
During acceleration, the ASD will not output a signal to the motor
until the lower level of the band is reached.
During deceleration, the ASD will continue to output the pro -
grammed deceleration signal to the motor until the lower level of
the band is reached; at which time the output will go to 0.0 Hz.
Direct Access Number — F241
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — Maximum Freq.
(F011)
Units — Hz
Run Frequency Hysteresis
Program

Special

Frequency Control
This parameter provides a plus-or-minus value for the Run Fre -
quency setting (F241) .
Direct Access Number —
F242
Parameter Type —
Numerical
Factory Default —
0.00
Changeable During Run —
Yes
Minimum — 0.00
Maximum — (ASD-Dependent)
Units — Hz
F240
–
F243