Download G9 ASD Installation and Operation Manual

efesotomasyon.com -Toshiba inverter,drive,servo,plc
F242
F251
Run Frequency Hysteresis
Direct Access Number — F242
Program Special Frequency Control
Parameter Type — Numerical
This parameter provides a plus-or-minus value for the Run Frequency (F241)
setting.
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 30.0
Units — Hz
End Frequency
Direct Access Number — F243
Program Special Frequency Control
Parameter Type — Numerical
This parameter sets the lowest frequency that the drive will recognize during
deceleration before the drive goes to 0.00 Hz.
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 30.0
Units — Hz
0 Hz Dead Band Signal
Direct Access Number — F244
Program Special Special Parameters
Parameter Type — Numerical
This parameter sets an output frequency threshold that, until the commanded
frequency surpasses this setting, the ASD will output 0.00 Hz to the motor.
This setting will override the Start Frequency (F240) setting if this setting has
a higher value.
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 5.00
Units — Hz
DC Injection Braking Start Frequency
Direct Access Number — F250
Program Protection DC Braking
Parameter Type — Numerical
During deceleration this is the frequency at which DC Injection Braking will
start.
Factory Default — 0.00
DC Injection Braking
Minimum — 0.00
DC Injection Braking is a braking system used with 3-phase motors. Unlike
conventional brakes, there is no physical contact between the rotating shaft and
a stationary brake pad or drum. When braking is required, the drive outputs a
DC current that is applied to the windings of the motor to quickly brake the
motor. The braking current stops when the time entered in F252 times out.
Changeable During Run — Yes
Maximum — 120.00
Units — Hz
The intensity of the DC current used while braking determines how fast the
motor will come to a stop and may be set at F251. The intensity setting is
entered as a percentage of the full load current of the ASD.
DC Injection Braking is also used to preheat the motor or to keep the rotor
from spinning freely when the motor is off by providing a pulsating DC current
into the motor at the Carrier Frequency. This feature may be enabled at F254.
DC Injection Braking Current
Direct Access Number — F251
Program Protection DC Braking
Parameter Type — Numerical
This parameter sets the percentage of the rated current of the drive that will be
used for DC Injection Braking. A larger load will require a higher setting.
Factory Default — 50
Changeable During Run — Yes
Minimum — 0
Maximum — 100
Units — %
124
G9 ASD Installation and Operation Manual