Delta VFD-B Series - Page 146

Chapter 5 Parameters|VFD-B-P Series
Revision April 2009, SW V1.00 5-81
B.B.
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08-06
Speed search
Synchronization speed detection
In RUN s tate
Fig. 3: B.B. speed search with min. output frequency upward timing chart
FWD Run
Output current
Output voltage(V)
Output frequency
(H )
06-01
Over current
stall prevention
during acceleration
Time
08 - 19 Speed Search during Start-up
Factory Setting: 00
Settings 00 Speed search disable
01 Speed search 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.
 To enable the speed search function of PG, it only needs to set Pr.10-10 and Pr.10-11. It
doesn’t need to use with Pr.00-09. Pr.08-04 and Pr.08-18 will be disabled when using this
parameter with PG feedback control.
CAUTION!
Please make sure Pr.07-04, Pr.10-10, and Pr.10-11 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 - 20
Speed Search Frequency during Start-up
Factory Setting: 00
Settings 00 Setting Frequency
01 Maximum Operation Frequency (01-00)
 This parameter determines the start value of the speed search frequency.