Delta Electronics AC Motor Drive VFD-EL - Manual (Page 122)

Chapter 4 Parameters|
Revision August 2008, 2ELE, V1.02 4-79
Output frequency
(H)
Output voltage(V)
08.08 Current Limit
for Speed SearchSpeed
FWD Run
Time
B.B.
Fig 1:B.B. Speed Search with Last Output Frequency Downward Timing Chart
(Speed Search Current Attains Speed Search Level)
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08.07
Speed Search
Synchronization speed detection
Time
B.B.
Fig 2: B.B. Speed Search with Last Output Frequency Downward Timing Chart
(Speed Search Current doesn't Attain Speed Search Level)
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08.07
Speed Search
Synchronization speed detection
Output frequency
(H)
08.08 Current Limit
for Speed SearchSpeed
FWD Run
Time
B.B.
Fig3: B.B. Speed Search with Minimum Output Frequency Upward Timing Chart
A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08.07
Restart
Synchronization speed detection
Keep accelerating
A
Output frequency
(H)
06.01
Over current
stall prevention
during acceleration
FWD Run
08.07 Baseblock Time for Speed Search (BB) Unit: 0.1
Settings 0.1 to 5.0 sec Factory Setting: 0.5