Delta VFD-B - B.B. Speed Search with Last Output Frequency Upward Timing Chart; Speed Search During Start-Up

Chapter 5 Parameters|VFD-B Series
5-80 Revision July 2008, BE16, SW V4.08 & V5.00
B.B.
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08-06
Speed search
Synchronization speed detection
Fig. 2: B.B. speed search with last output frequency downward timing chart
FWD Run
Output current
Output voltage(V)
Output frequency
(H)
08-07
Current limit for
speed search
Time
B.B.
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08-06
Restart
Stall prevention
Keep accelerating
Fig. 3: B.B. speed search with last 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