Chapter 4 Parameters
4-133
Situation 3: Power recovers after power loss
Pr08-24=1 and power recover after DCBUS voltage is lower than Lv level.
When the motor drive decelerates to 0 Hz and when DC BUS voltage continues to decrease
until it is lower than Lv level, then the power recovers. Wait until the DC BUS voltage increases
to be higher than the dEb return level and the motor drive follows the setting time at Pr08-25,
the motor drive will re-begin linear acceleration. The dEb message will disappear on the
keypad at this moment
DC BUS Voltage of the motor drive
dEb return level
Lv return level
dEb operation level
Soft start relay at power side
dEb operation
MO/ Display
Output frequency
0 Hz
Waiting time of dEb return
MO=10
Lv operation
Linear deceleration
Linear acceleration
Lv level
08.26
Speed Search during Start-up
Factory Setting: 0
Settings
0
Disable
1
Enable
This parameter is used for starting and stopping a motor with high inertia. A motor with high
inertia will take a long time to stop completely. By setting this parameter, the user does not
need to wait for the motor to come to a complete stop before restarting the AC motor drive. If a
PG card and encoder is used on the drive and motor, then the speed search will start from the
speed that is detected by the encoder and accelerate quickly to the setting frequency.
When using this parameter with PG feedback control, this function will be enabled as Pr.13.00
and Pr.13.01 are set. It has no relation with Pr.00.10. Pr.08-04 and Pr.08-06 will be disabled
when using this parameter with PG feedback control.
Please make sure Pr.13.00 to Pr.13.02 are set correctly. An incorrect setting may cause the
motor to exceed its speed limit and permanent damage to the motor and machine can occur.
08.27
Speed Search Frequency during Start-up
Factory Setting: 0
Settings
0
Setting
Frequency
1
Maximum Operation Frequency (Pr.01.00)
This parameter determines the start value of the speed search frequency.
