Chapter 4 Parameters|
4-130 Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12
Output frequency
(H)
Output voltage(V)
0 8 .08 Cu rr e nt L imit
for Speed SearchSpeed
Output current (A)
FWD Run
Time
B.B.
Fig 1:B.B. Speed Search with Last Frequency Downward Timing Chart
A
Input B.B. signal
Stop output voltage
Dis a bl e B .B . sig n a l
Wai ting time 08.07
Speed Search
Synchronization speed detection
Time
B.B.
Fig 2: B.B. Speed Search with Min. Output Frequency Upward Timing Chart
A
I nput B.B . si gnal
Stop output voltage
Dis a bl e B. B. sign a l
Waiting time 08.07
Speed Search
Synchronization speed detection
Output frequency
(H)
08.08 Current Limit
for Speed SearchSpeed
FWD Run
08.07 Baseblock Time for Speed Search (BB) Unit: 0.1
Settings 0.1 to 5.0 sec Factory Setting: 0.5
When momentary power loss is detected, the AC motor drive will block its output and then wait
for a specified period of time (determined by Pr.08.07, called Base-Block Time) before
resuming operation. This parameter should be set at a value to ensure that any residual
regeneration voltage from the motor on the output has disappeared before the drive is
activated again.
This parameter also determines the waiting time before resuming operation after External
Baseblock and Auto Restart after Fault (Pr.08.15).
When using a PG card with PG (encoder), speed search will begin at the actual PG (encoder)
feedback speed.
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